1
|
Yu M, Hwang HH, Wiggs JL, Pasquale LR, Kang JH. Association between Diabetes and Exfoliation Syndrome. Ophthalmol Sci 2024; 4:100436. [PMID: 38250562 PMCID: PMC10797545 DOI: 10.1016/j.xops.2023.100436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/22/2023] [Accepted: 11/13/2023] [Indexed: 01/23/2024]
Abstract
Topic This systematic review and meta-analysis summarizes the existing evidence for the association of diabetes mellitus (DM) and exfoliation syndrome (XFS). Clinical Relevance Understanding and quantifying these associations may aid clinical guidelines or treatment strategies and shed light on disease pathogenesis. The role of DM in determining XFS risk may also be of interest from an individual or public health perspective. Methods The study protocol was preregistered on the International Prospective Register of Systematic Reviews with registration number CRD42023429771. We systematically searched PubMed and Embase from inception to June 15, 2023. Screening and full-text review were conducted by 2 independent reviewers. All observational studies reporting an age-adjusted odds ratio (OR) and 95% confidence interval (CI) for the association between DM and XFS among adults were included. Quantitative synthesis involved a random-effects meta-analysis using the DerSimonian-Laird method to generate a pooled OR. Risk of bias was evaluated using the Newcastle-Ottawa Scale. Results Fourteen studies (9 cross-sectional and 5 case-control) comprising 47 853 participants were included in the systematic review and meta-analysis. Random-effects meta-analysis indicated no overall association between DM and XFS (OR 0.94; 95% CI, 0.73–1.21; I 2 = 68.5%). However, subgroup analysis revealed a significant inverse association among individuals ≥ 65 years (OR 0.71; 95% CI, 0.54–0.93) versus individuals < 65 years (OR 1.22; 95% CI, 0.80–1.87; P effect modification = 0.04). The relation between DM and XFS was also inverse in case-control studies (OR 0.75; 95% CI, 0.58–0.97) but was nonsignificant in cross-sectional studies (OR 1.17; 95% CI, 0.83–1.66; P effect modification = 0.04). Overall risk of bias was low, with tests for publication bias showing P ≥ 0.06. Conclusion This meta-analysis suggests no association between DM and XFS overall, with possible inverse associations of DM with XFS in older populations. However, given the substantial heterogeneity and borderline significance for publication bias, these findings should be interpreted with caution. Our results give insight into the unique etiology and clinical relevance of XFS while proposing the need for larger longitudinal and genetic biomarker studies. Financial Disclosure(s) Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
Collapse
Affiliation(s)
- Megan Yu
- Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Hannah H. Hwang
- Department of Ophthalmology, Weill Cornell Medicine, New York, New York
| | - Janey L. Wiggs
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
| | - Louis R. Pasquale
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jae H. Kang
- Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
| |
Collapse
|
2
|
Feng B, Liu Y, Wan K, Zu S, Pei Y, Zhang X, Qiao M, Li H, Zong B. Tailored Exfoliation of Polymeric Carbon Nitride for Photocatalytic H 2O 2 Production and CH 4 Valorization Mediated by O 2 Activation. Angew Chem Int Ed Engl 2024; 63:e202401884. [PMID: 38376362 DOI: 10.1002/anie.202401884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/20/2024] [Indexed: 02/21/2024]
Abstract
The exfoliation of bulk C3N4 (BCN) into ultrathin layered structure is an effective strategy to boost photocatalytic efficiency by exposing interior active sites and accelerating charge separation and transportation. Herein, we report a novel nitrate anion intercalation-decomposition (NID) strategy that is effective in peeling off BCN into few-layer C3N4 (fl-CN) with tailored thickness down to bi-layer. This strategy only involves hydrothermal treatment of BCN in diluted HNO3 aqueous solution, followed by pyrolysis at various temperatures. The decomposition of the nitrate anions not only exfoliates BCN and changes the band structure, but also incorporates oxygen species onto fl-CN, which is conducive to O2 adsorption and hence relevant chemical processes. In photocatalytic O2 reduction under visible light irradiation, the H2O2 production rate over the optimal fl-CN-530 catalyst is 952 μmol g-1 h-1, which is 8.8 times that over BCN. More importantly, under full arc irradiation and in the absence of hole scavenger, CH4 can be photocatalytically oxidized by on-site formed H2O2 and active oxygen species to generate value-added C1 oxygenates with high selectivity of 99.2 % and record-high production rate of 1893 μmol g-1 h-1 among the metal-free C3N4-based photocatalysts.
Collapse
Affiliation(s)
- Bo Feng
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Yanan Liu
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Kun Wan
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Sijie Zu
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Yan Pei
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Xiaoxin Zhang
- State Key Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing, 100083, P. R. China
| | - Minghua Qiao
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China
| | - Hexing Li
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, 200234, P. R. China
| | - Baoning Zong
- State Key Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing, 100083, P. R. China
| |
Collapse
|
3
|
Wu P, Geng S, Wang X, Zhang X, Li H, Zhang L, Shen Y, Zha B, Zhang S, Huo F, Zhang W. Exfoliation of Metal-Organic Frameworks to Give 2D MOF Nanosheets for the Electrocatalytic Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2024; 63:e202402969. [PMID: 38407381 DOI: 10.1002/anie.202402969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 02/27/2024]
Abstract
The structure and properties of materials are determined by a diverse range of chemical bond formation and breaking mechanisms, which greatly motivates the development of selectively controlling the chemical bonds in order to achieve materials with specific characteristics. Here, an orientational intervening bond-breaking strategy is demonstrated for synthesizing ultrathin metal-organic framework (MOF) nanosheets through balancing the process of thermal decomposition and liquid nitrogen exfoliation. In such approach, proper thermal treatment can weaken the interlayer bond while maintaining the stability of the intralayer bond in the layered MOFs. And the following liquid nitrogen treatment results in significant deformation and stress in the layered MOFs' structure due to the instant temperature drop and drastic expansion of liquid N2, leading to the curling, detachment, and separation of the MOF layers. The produced MOF nanosheets with five cycles of treatment are primarily composed of nanosheets that are less than 10 nm in thickness. The MOF nanosheets exhibit enhanced catalytic performance in oxygen evolution reactions owing to the ultrathin thickness without capping agents which provide improved charge transfer efficiency and dense exposed active sites. This strategy underscores the significance of orientational intervention in chemical bonds to engineer innovative materials.
Collapse
Affiliation(s)
- Peng Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Shuang Geng
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Xinyu Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Xinglong Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Hongfeng Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Lulu Zhang
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Yu Shen
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Baoli Zha
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Suoying Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Fengwei Huo
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| | - Weina Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, 211816, Nanjing, China
| |
Collapse
|
4
|
Mohanta RK, Roy KS, Gupta SP, Yella A, Panchakarla L. Exfoliation of Ca 3Co 4O 9 to Two-Dimensional Single-Crystalline Misfit Calcium Cobaltates for Energy Storage Applications. ACS Appl Mater Interfaces 2024; 16:19330-19339. [PMID: 38568007 DOI: 10.1021/acsami.3c17160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Layered materials have become indispensable in the development of two-dimensional (2D) systems, offering extensive specific surface area and exceptional electrical, electrochemical, and optical properties critical for diverse applications in energy storage, catalysis, sensing, and optoelectronics. While mono- and biatomic layered materials have demonstrated remarkable characteristics in lower dimensions, the quest for complexity in materials has opened new avenues for tailoring properties to specific requirements. Within this context, misfit-layered compounds (MLCs) stand out as promising candidates. In this study, we present a successful synthesis of few-layered misfit CaCoO2-CoO2 2D nanosheets in bulk quantities from bulk calcium cobalt oxide (CCO-B or CCO). These newly synthesized 2D exfoliated misfit nanosheets demonstrate remarkable 7-fold electrochemical energy storage properties, surpassing their parent bulk CCO, as cathode materials in aqueous Zn-ion batteries. This work addresses the longstanding challenge of exfoliating bulk MLCs to nanostructured, lower dimensional MLCs, opening doors for utilization in advanced energy storage systems and beyond.
Collapse
Affiliation(s)
- Rajat Kumar Mohanta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Kankona Singha Roy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Shobhnath P Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Aswani Yella
- Department of Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Leela Panchakarla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
5
|
Peydayesh M, Boschi E, Bagnani M, Tay D, Donat F, Almohammadi H, Li M, Usuelli M, Shiroka T, Mezzenga R. Hybrid Amyloid-Chitin Nanofibrils for Magnetic and Catalytic Aerogels. ACS Nano 2024; 18:6690-6701. [PMID: 38345899 DOI: 10.1021/acsnano.4c00883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
In the quest for a sustainable and circular economy, it is essential to explore environmentally friendly alternatives to traditional petroleum-based materials. A promising pathway toward this goal lies in the leveraging of biopolymers derived from food waste, such as proteins and polysaccharides, to develop advanced sustainable materials. Here, we design versatile hybrid materials by hybridizing amyloid nanofibrils derived by self-assembly of whey, a dairy byproduct, with chitin nanofibrils exfoliated from the two distinct allomorphs of α-chitin and β-chitin, extracted from seafood waste. Various hydrogels and aerogels were developed via the hybridization and reassembly of these biopolymeric nanobuilding blocks, and they were further magnetized upon biomineralization with iron nanoparticles. The pH-phase diagram highlights the significant role of electrostatic interactions in gel formation, between positively charged amyloid fibrils and negatively charged chitin nanofibrils. Hybrid magnetic aerogels exhibit a ferromagnetic response characterized by a low coercivity (<50 Oe) and a high specific magnetization (>40 emu/g) at all temperatures, making them particularly suitable for superparamagnetic applications. Additionally, these aerogels exhibit a distinct magnetic transition, featuring a higher blocking temperature (200 K) compared to previously reported similar nanoparticles (160 K), indicating enhanced magnetic stability at elevated temperatures. Finally, we demonstrate the practical application of these hybrid magnetic materials as catalysts for carbon monoxide oxidation, showcasing their potential in environmental pollution control and highlighting their versatility as catalyst supports.
Collapse
Affiliation(s)
- Mohammad Peydayesh
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Enrico Boschi
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Massimo Bagnani
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Daniel Tay
- Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Felix Donat
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH-8092 Zürich, Switzerland
| | - Hamed Almohammadi
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Mingqin Li
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Mattia Usuelli
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Toni Shiroka
- Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
- Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| |
Collapse
|
6
|
Wu Z, Huang T, Sathishkumar G, He X, Wu H, Zhang K, Rao X, Kang ET, Xu L. Phytic Acid-Promoted Exfoliation of Black Phosphorus Nanosheets for the Fabrication of Photothermal Antibacterial Coatings. Adv Healthc Mater 2024; 13:e2302058. [PMID: 37972607 DOI: 10.1002/adhm.202302058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/10/2023] [Indexed: 11/19/2023]
Abstract
Medical device-associated infections (MDAI) caused by planktonic pathogens are of serious concern worldwide due to the emergence of drug resistance resulting from continuous overuse or misuse of antibiotics. Therefore, the design of non-antibiotics-based treatment for MDAI is of crucial importance. Black phosphorus (BP), a novel 2D material, has recently received much attention owing to its remarkable physical, chemical, mechanical, and functional features. However, the intricacy of the fabrication process has severely hampered the development of BP in prospective applications. In this study, a simple and eco-friendly liquid-phase exfoliation method of phytic acid (PA)-promoted exfoliation of BP nanosheets (PA@BP NSs) is developed for their potential application in antibacterial photothermal therapy. To impart the antimicrobial effects, the polydimethylsiloxane surfaces are functionalized with quaternized polymer (polyquaternium-2 or PQ) and PA@BP NSs, leading to the formation of PA-BP-PQ composite coatings. In addition to the contact-killing antibacterial effect of the cationic PQ, the PA-BP-PQ coating exhibits remarkable near-infrared irradiation-triggered bactericidal effects with low cytotoxicity both in vitro and in vivo. This study proposes a simple liquid-phase exfoliation technique for the fabrication of BP NSs and a one-step approach for the construction of PA-BP-PQ composite coatings for bi-modal (contact-killing and photothermal) antimicrobial therapy.
Collapse
Affiliation(s)
- Ziyi Wu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Tao Huang
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Gnanasekar Sathishkumar
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Xiaodong He
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Huajun Wu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Kai Zhang
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Xi Rao
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - En-Tang Kang
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, 117576, Singapore
| | - Liqun Xu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, P. R. China
| |
Collapse
|
7
|
Wang Y, Ying Z, Gao Y, Shi L. Layered Double Hydroxide Nanosheets: Synthesis Strategies and Applications in the Field of Energy Conversion. Chemistry 2024; 30:e202303025. [PMID: 37902103 DOI: 10.1002/chem.202303025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/31/2023]
Abstract
In recent years, layered double hydroxides (LDH) nanosheets have garnered substantial attention as intriguing inorganic anionic layered clay materials. These nanosheets have captured the attention of researchers due to their unique physicochemical properties. This review aims to showcase the latest advancements in laboratory research concerning LDH nanosheets, with a specific emphasis on their methods of preparation. This review provides detailed insights into the factors influencing the anionic conductivity of LDH, along with delineating the applications of LDH nanosheets in the realm of energy conversion. Notably, the review highlights the crucial role of LDH nanosheets in the oxygen evolution reaction (OER), a vital process in water splitting and diverse electrochemical applications. The review emphasizes the significant potential of LDH nanosheets in enhancing supercapacitor technology, owing to their high surface area and exceptional charge storage capacity. Additionally, it elucidates the prospective application of LDH nanosheets as anion exchange membranes in anion exchange membrane fuel cells, potentially revolutionizing fuel cell performance through improved efficiency and stability facilitated by enhanced ion transport properties.
Collapse
Affiliation(s)
- Yindong Wang
- Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Zhixuan Ying
- Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Yushuan Gao
- Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Le Shi
- Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| |
Collapse
|
8
|
Wu Y, Wang BY, Yu Y, Li Y, Ribeiro HB, Wang J, Xu R, Liu Y, Ye Y, Zhou J, Ke F, Harbola V, Heinz TF, Hwang HY, Cui Y. Interlayer engineering of Fe 3GeTe 2: From 3D superlattice to 2D monolayer. Proc Natl Acad Sci U S A 2024; 121:e2314454121. [PMID: 38232283 PMCID: PMC10823236 DOI: 10.1073/pnas.2314454121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/05/2023] [Indexed: 01/19/2024] Open
Abstract
The discoveries of ferromagnetism down to the atomically thin limit in van der Waals (vdW) crystals by mechanical exfoliation have enriched the family of magnetic thin films [C. Gong et al., Nature 546, 265-269 (2017) and B. Huang et al., Nature 546, 270-273 (2017)]. However, compared to the study of traditional magnetic thin films by physical deposition methods, the toolbox of the vdW crystals based on mechanical exfoliation and transfer suffers from low yield and ambient corrosion problem and now is facing new challenges to study magnetism. For example, the formation of magnetic superlattice is difficult in vdW crystals, which limits the study of the interlayer interaction in vdW crystals [M. Gibertini, M. Koperski, A. F. Morpurgo, K. S. Novoselov, Nat. Nanotechnol. 14, 408-419 (2019)]. Here, we report a strategy of interlayer engineering of the magnetic vdW crystal Fe3GeTe2 (FGT) by intercalating quaternary ammonium cations into the vdW spacing. Both three-dimensional (3D) vdW superlattice and two-dimensional (2D) vdW monolayer can be formed by using this method based on the amount of intercalant. On the one hand, the FGT superlattice shows a strong 3D critical behavior with a decreased coercivity and increased domain wall size, attributed to the co-engineering of the anisotropy, exchange interaction, and electron doping by intercalation. On the other hand, the 2D vdW few layers obtained by over-intercalation are capped with organic molecules from the bulk crystal, which not only enhances the ferromagnetic transition temperature (TC), but also substantially protects the thin samples from degradation, thus allowing the preparation of large-scale FGT ink in ambient environment.
Collapse
Affiliation(s)
- Yecun Wu
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA94025
- Department of Electrical Engineering, Stanford University, Stanford, CA94305
- Department of Physics, Stanford University, Stanford, CA94305
| | - Bai Yang Wang
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA94025
- Department of Physics, Stanford University, Stanford, CA94305
| | - Yijun Yu
- Department of Applied Physics, Stanford University, Stanford, CA94305
| | - Yanbin Li
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Henrique B. Ribeiro
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA94025
| | - Jierong Wang
- Department of Applied Physics, Stanford University, Stanford, CA94305
| | - Rong Xu
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Yunzhi Liu
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Yusheng Ye
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Jiawei Zhou
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Feng Ke
- Department of Geological Science, Stanford University, Stanford, CA94305
| | - Varun Harbola
- Department of Physics, Stanford University, Stanford, CA94305
| | - Tony F. Heinz
- Department of Applied Physics, Stanford University, Stanford, CA94305
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA94025
| | - Harold Y. Hwang
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA94025
- Department of Applied Physics, Stanford University, Stanford, CA94305
| | - Yi Cui
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA94025
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| |
Collapse
|
9
|
Nakamoto T, Matsuyama K, Sakai M, Chen CT, Cheuch YL, Mouri S, Yoshimura T, Fujimura N, Kiriya D. Selective Isolation of Mono- to Quadlayered 2D Materials via Sonication-Assisted Micromechanical Exfoliation. ACS Nano 2024; 18:2455-2463. [PMID: 38196098 DOI: 10.1021/acsnano.3c11099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Mechanical exfoliation methods of two-dimensional materials have been an essential process for advanced devices and fundamental sciences. However, the exfoliation method usually generates various thick flakes, and a bunch of thick bulk flakes usually covers an entire substrate. Here, we developed a method to selectively isolate mono- to quadlayers of transition metal dichalcogenides (TMDCs) by sonication in organic solvents. The analysis reveals the importance of low interface energies between solvents and TMDCs, leading to the effective removal of bulk flakes under sonication. Importantly, a monolayer adjacent to bulk flakes shows cleavage at the interface, and the monolayer can be selectively isolated on the substrate. This approach can extend to preparing a monolayer device with crowded 17 electrode fingers surrounding the monolayer and for the measurement of electrostatic device performance.
Collapse
Affiliation(s)
- Tatsuya Nakamoto
- Department of Physics and Electronics, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Keigo Matsuyama
- Department of Physics and Electronics, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Masahiro Sakai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Chieh-Ting Chen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Lun Cheuch
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shinichiro Mouri
- College of Science and Engineering, Ritsumeikan University, Nojihigashi 1-1-1, Kusatsu, Shiga 525-8577, Japan
| | - Takeshi Yoshimura
- Department of Physics and Electronics, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
| | - Norifumi Fujimura
- Department of Physics and Electronics, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
| | - Daisuke Kiriya
- Department of Physics and Electronics, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| |
Collapse
|
10
|
Günder D, Axt M, Witte G. Heteroepitaxy in Organic/TMD Hybrids and Challenge to Achieve it for TMD Monolayers: The Case of Pentacene on WS 2 and WSe 2. ACS Appl Mater Interfaces 2024; 16:1911-1920. [PMID: 38154080 DOI: 10.1021/acsami.3c15829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The intriguing photophysical properties of monolayer stacks of different transition-metal dichalcogenides (TMDs), revealing rich exciton physics including interfacial and moiré excitons, have recently prompted an extension of similar investigations to hybrid systems of TMDs and organic films, as the latter combine large photoabsorption cross sections with the ability to tailor energy levels by targeted synthesis. To go beyond single-molecule photoexcitations and exploit the excitonic signatures of organic solids, crystalline molecular films are required. Moreover, a defined registry on the substrate, ideally an epitaxy, is desirable to also achieve an excitonic coupling in momentum space. This poses a certain challenge as excitonic dipole moments of organic films are closely related to the molecular orientation and film structure, which critically depend on the support roughness. Using X-ray diffraction, optical polarization, and atomic force microscopy, we analyzed the structure of pentacene (PEN) multilayer films grown on WSe2(001) and WS2(001) and identified an epitaxial alignment. While (022)-oriented PEN films are formed on both substrates, their azimuthal orientations are quite different, showing an alignment of the molecular L-axis along the ⟨ 110 ⟩ WSe 2 and ⟨ 100 ⟩ WS 2 directions. This intrinsic epitaxial PEN growth depends, however, sensitively on the substrates surface quality. While it occurs on exfoliated TMD single crystals and multilayer flakes, it is hardly found on exfoliated monolayers, which often exhibit bubbles and wrinkles. This enhances the surface roughness and results in (001)-oriented PEN films with upright molecular orientation but without any azimuthal alignment. However, monolayer flakes can be smoothed by AFM operated in contact mode or by transferring to ultrasmooth substrates such as hBN, which again yields epitaxial PEN films. As different PEN orientations result in different characteristic film morphologies (elongated mesa islands vs pyramidal dendrites), which can be easily distinguished by AFM or optical microscopy, this provides a simple means to judge the roughness of the used TMD surface.
Collapse
Affiliation(s)
- Darius Günder
- Molekulare Festkörperphysik, Philipps-Universität Marburg, Marburg 35032, Germany
| | - Marleen Axt
- Oberflächenphysik, Philipps-Universität Marburg, Marburg 35032, Germany
| | - Gregor Witte
- Molekulare Festkörperphysik, Philipps-Universität Marburg, Marburg 35032, Germany
| |
Collapse
|
11
|
Rivollier N, Schwiddessen R, Cabrera G, Combeaud C, Schorr S, Dennler G. Montmorillonite Exfoliation in LLDPE and Factors Affecting Its Orientation: From Monolayer to Multi-Nano-Layer Polymer Films. Polymers (Basel) 2024; 16:200. [PMID: 38256999 PMCID: PMC10820231 DOI: 10.3390/polym16020200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
The motivations of the present work are to investigate the exfoliation of montmorillonite within a linear low-density polyethylene matrix and to control its orientation during the cast extrusion process. The first part is focused on the exfoliation of the montmorillonite through the melt extrusion process. The accuracy and relevance of each method used to determine the exfoliation state of montmorillonite have been examined, thanks to X-ray diffraction, transmission electronic microscopy, and rheology. All these methods have presented limitations, but the combination of all leads to a better estimation of the exfoliation state. Finally, the orientation of the montmorillonite is quantified systematically by X-ray texture analysis and correlated with process parameters to discern which one is affecting their orientation. The results have demonstrated an enhancement of the "in-plane" orientation of the montmorillonite with the exfoliation, especially at high concentration and when combined with cast extrusion. Finally, in the multi-nano-layer polymer film configuration, the reduction of the individual layers 29 nm thickness leads to some orientation improvements. However, these improvements are almost at the same level as the concentration effect in a monolayer system. This work gives an overview of all the parameters needed to achieve a significant organo-modified montmorillonite "in-plane" orientation.
Collapse
Affiliation(s)
- Noémie Rivollier
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
- Institute of Geological Science, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany
| | - René Schwiddessen
- Helmholtz-Zentrum Berlin, Department of Structure and Dynamic of Energy Materials, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Geraldine Cabrera
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
| | - Christelle Combeaud
- MINES Paris, PSL University, Center for Materials Forming (CEMEF), UMR CNRS 7635, 1 Rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis, France
| | - Susan Schorr
- Institute of Geological Science, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany
- Helmholtz-Zentrum Berlin, Department of Structure and Dynamic of Energy Materials, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Gilles Dennler
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
| |
Collapse
|
12
|
Kalantari Bolaghi Z, Rodriguez-Seco C, Yurtsever A, Ma D. Exploring the Remarkably High Photocatalytic Efficiency of Ultra-Thin Porous Graphitic Carbon Nitride Nanosheets. Nanomaterials (Basel) 2024; 14:103. [PMID: 38202558 PMCID: PMC10781176 DOI: 10.3390/nano14010103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/29/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024]
Abstract
Graphitic carbon nitride (g-C3N4) is a metal-free photocatalyst used for visible-driven hydrogen production, CO2 reduction, and organic pollutant degradation. In addition to the most attractive feature of visible photoactivity, its other benefits include thermal and photochemical stability, cost-effectiveness, and simple and easy-scale-up synthesis. However, its performance is still limited due to its low absorption at longer wavelengths in the visible range, and high charge recombination. In addition, the exfoliated nanosheets easily aggregate, causing the reduction in specific surface area, and thus its photoactivity. Herein, we propose the use of ultra-thin porous g-C3N4 nanosheets to overcome these limitations and improve its photocatalytic performance. Through the optimization of a novel multi-step synthetic protocol, based on an initial thermal treatment, the use of nitric acid (HNO3), and an ultrasonication step, we were able to obtain very thin and well-tuned material that yielded exceptional photodegradation performance of methyl orange (MO) under visible light irradiation, without the need for any co-catalyst. About 96% of MO was degraded in as short as 30 min, achieving a normalized apparent reaction rate constant (k) of 1.1 × 10-2 min-1mg-1. This represents the highest k value ever reported using C3N4-based photocatalysts for MO degradation, based on our thorough literature search. Ultrasonication in acid not only prevents agglomeration of g-C3N4 nanosheets but also tunes pore size distribution and plays a key role in this achievement. We also studied their performance in a photocatalytic hydrogen evolution reaction (HER), achieving a production of 1842 µmol h-1 g-1. Through a profound analysis of all the samples' structure, morphology, and optical properties, we provide physical insight into the improved performance of our optimized porous g-C3N4 sample for both photocatalytic reactions. This research may serve as a guide for improving the photocatalytic activity of porous two-dimensional (2D) semiconductors under visible light irradiation.
Collapse
Affiliation(s)
| | - Cristina Rodriguez-Seco
- Centre Énergie Materiaux et Telécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada; (Z.K.B.); (A.Y.)
| | | | - Dongling Ma
- Centre Énergie Materiaux et Telécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada; (Z.K.B.); (A.Y.)
| |
Collapse
|
13
|
Islam AN, Saha P, Hossain ME, Habib MA, Karim KMR, Mahiuddin M. Green Coffee Bean Extract Assisted Facile Synthesis of Reduced Graphene Oxide and Its Dye Removal Activity. Glob Chall 2024; 8:2300247. [PMID: 38223893 PMCID: PMC10784199 DOI: 10.1002/gch2.202300247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/20/2023] [Indexed: 01/16/2024]
Abstract
To discharge the colored effluents from industries there needs to be effective and affordable treatment options. Adsorption using reduced graphene oxide (rGO) as an adsorbent is a prominent one. In this study, green coffee bean extract (GCBE) is utilized as a safe reducing agent for the reduction of graphene oxide (GO) to synthesize rGO. The formation of rGO is confirmed by a new peak in the UV-vis spectra at 275 nm and a diffraction peak in the XRD patterns at 22°. The effective formation of rGO is further substantiated by a change in the GO peak's properties in the FTIR, EDX, and Raman spectra and a weight loss change in TGA. The SEM and TEM analyses demonstrate the effective production of the nano-sheets of rGO having exfoliated and segregated in a few layers. Furthermore, the obtained rGO exhibited outstanding efficacy in wastewater cleanup, effectively adsorbing MB as a prototype organic dye. The kinetics and isotherm study suggested that the adsorption leads by the chemisorption and monolayer formation on the homogeneous surface of rGO. The maximum adsorption capacity is found to be 89.3 mg g-1. This process offers a fresh opportunity for the economical and safe production of rGO for wastewater treatment.
Collapse
Affiliation(s)
| | - Prianka Saha
- Chemistry DisciplineKhulna UniversityKhulna9208Bangladesh
| | | | | | | | - Md. Mahiuddin
- Chemistry DisciplineKhulna UniversityKhulna9208Bangladesh
| |
Collapse
|
14
|
Kwak HM, Kim J, Lee JS, Kim J, Baik J, Choi SY, Shin S, Kim JS, Mun SH, Kim KP, Oh SH, Lee DS. 2D-Material-Assisted GaN Growth on GaN Template by MOCVD and Its Exfoliation Strategy. ACS Appl Mater Interfaces 2023; 15:59025-59036. [PMID: 38084630 DOI: 10.1021/acsami.3c14076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The production of freestanding membranes using two-dimensional (2D) materials often involves techniques such as van der Waals (vdW) epitaxy, quasi-vdW epitaxy, and remote epitaxy. However, a challenge arises when attempting to manufacture freestanding GaN by using these 2D-material-assisted growth techniques. The issue lies in securing stability, as high-temperature growth conditions under metal-organic chemical vapor deposition (MOCVD) can cause damage to the 2D materials due to GaN decomposition of the substrate. Even when GaN is successfully grown using this method, damage to the 2D material leads to direct bonding with the substrate, making the exfoliation of the grown GaN nearly impossible. This study introduces an approach for GaN growth and exfoliation on 2D material/GaN templates. First, graphene and hexagonal boron nitride (h-BN) were transferred onto the GaN template, creating stable conditions under high temperatures and various gases in MOCVD. GaN was grown in a two-step process at 750 and 900 °C, ensuring exfoliation in cases where the 2D materials remained intact. Essentially, while it is challenging to grow GaN on 2D material/GaN using only MOCVD, this study demonstrates that with effective protection of the 2D material, the grown GaN can endure high temperatures and still be exfoliated. Furthermore, these results support that vdW epitaxy and remote epitaxy principle are not only possible with specific equipment but also applicable generally.
Collapse
Affiliation(s)
- Hoe-Min Kwak
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jongil Kim
- Department of Energy Engineering, Institute for Energy Materials and Devices, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju 58330, Republic of Korea
| | - Je-Sung Lee
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jeongwoon Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jaeyoung Baik
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Soo-Young Choi
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sunwoo Shin
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jin-Soo Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seung-Hyun Mun
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Kyung-Pil Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sang Ho Oh
- Department of Energy Engineering, Institute for Energy Materials and Devices, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju 58330, Republic of Korea
| | - Dong-Seon Lee
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- Department of Semiconductor Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
15
|
Sasikala SP, Prabhakaran P, Baskaran S, Kim JT, Lee GS, Yoon YH, Choi HJ, Kim JG, Kim JB, Kim SO. Direct Solution-Phase Synthesis and Functionalization of 2D WSe 2 for Ambient Stability. Chemistry 2023; 29:e202301744. [PMID: 37537970 DOI: 10.1002/chem.202301744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/03/2023] [Accepted: 08/03/2023] [Indexed: 08/05/2023]
Abstract
2H phase tungsten diselenide (WSe2 ) is a p-type 2D semiconductor from the transition metal dichalcogenides (TMDs) family with unique optoelectrical properties. Solution phase production of atomically thin WSe2 is challenging due to its instability under ambient conditions. We present a highly efficient and scalable solution method for simultaneously exfoliating and functionalizing WSe2 by leveraging the non-covalent interaction between mercapto-group and bulk WSe2 . Single and few-layer 2H phase pure WSe2 sheets of lateral size up to 5 μm with minimal basal plane defects, as revealed by XPS, Raman and FTIR spectroscopy, are produced in a water-ethanol mixture. Remarkably, WSe2 dispersion remains stable even at high concentrations (10 mg/mL) and exhibited high colloidal stability with a shelf-life exceeding a year. The findings from our study suggest that through precise manipulation of intercalation chemistry, mass production of solution-processable phase-sensitive 2D materials such as WSe2 can be achieved. This advancement holds great potential for facilitating their practical utilization in various real-world applications.
Collapse
Affiliation(s)
- Suchithra Padmajan Sasikala
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Prem Prabhakaran
- Department of Advanced Materials, Hannam University, Daejeon, 34054 (Republic of, Korea
| | - Sambath Baskaran
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Jun Tae Kim
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Gang San Lee
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Yeo Hoon Yoon
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Hee Jae Choi
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Jin Goo Kim
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Jun Beom Kim
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| | - Sang Ouk Kim
- Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daehak-ro 192, Yuseong-gu, Daejeon, 34141 (Republic of, Korea
| |
Collapse
|
16
|
Costello L, Goncalves K, Maltman V, Barrett N, Shah K, Stephens A, Dicolandrea T, Ambrogio I, Hodgson E, Przyborski S. Development of a novel in vitro strategy to understand the impact of shaving on skin health: combining tape strip exfoliation and human skin equivalent technology. Front Med (Lausanne) 2023; 10:1236790. [PMID: 38020123 PMCID: PMC10652890 DOI: 10.3389/fmed.2023.1236790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The removal of unwanted hair is a widespread grooming practice adopted by both males and females. Although many depilatory techniques are now available, shaving remains the most common, despite its propensity to irritate skin. Current techniques to investigate the impact of shaving regimes on skin health rely on costly and lengthy clinical trials, which hinge on recruitment of human volunteers and can require invasive biopsies to elucidate cellular and molecular-level changes. Methods Well-characterised human skin equivalent technology was combined with a commonplace dermatological technique of tape stripping, to remove cellular material from the uppermost layer of the skin (stratum corneum). This method of exfoliation recapitulated aspects of razor-based shaving in vitro, offering a robust and standardised in vitro method to study inflammatory processes such as those invoked by grooming practices. Results Tape strip insult induced inflammatory changes in the skin equivalent such as: increased epidermal proliferation, epidermal thickening, increased cytokine production and impaired barrier function. These changes paralleled effects seen with a single dry razor pass, correlated with the number of tape strips removed, and were attenuated by pre-application of shaving foam, or post-application of moisturisation. Discussion Tape strip removal is a common dermatological technique, in this study we demonstrate a novel application of tape stripping, to mimic barrier damage and inflammation associated with a dry shave. We validate this method, comparing it to razor-based shaving in vitro and demonstrate the propensity of suitable shave- and skin-care formulations to mitigate damage. This provides a novel methodology to examine grooming associated damage and a platform for screening potential skin care formulations.
Collapse
Affiliation(s)
- Lydia Costello
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Kirsty Goncalves
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Victoria Maltman
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Nicole Barrett
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Kous Shah
- Procter & Gamble, Reading, Berkshire, United Kingdom
| | | | | | | | - Erica Hodgson
- Procter & Gamble, Reading, Berkshire, United Kingdom
| | - Stefan Przyborski
- Department of Biosciences, Durham University, Durham, United Kingdom
- Reprocell Europe Ltd., Glasgow, United Kingdom
| |
Collapse
|
17
|
Efimova AS, Alekseevskiy PV, Timofeeva MV, Kenzhebayeva YA, Kuleshova AO, Koryakina IG, Pavlov DI, Sukhikh TS, Potapov AS, Shipilovskikh SA, Li N, Milichko VA. Exfoliation of 2D Metal-Organic Frameworks: toward Advanced Scalable Materials for Optical Sensing. Small Methods 2023; 7:e2300752. [PMID: 37702111 DOI: 10.1002/smtd.202300752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/18/2023] [Indexed: 09/14/2023]
Abstract
Two-dimensional metal-organic frameworks (MOFs) occupy a special place among the large family of functional 2D materials. Even at a monolayer level, 2D MOFs exhibit unique sensing, separation, catalytic, electronic, and conductive properties due to the combination of porosity and organo-inorganic nature. However, lab-to-fab transfer for 2D MOF layers faces the challenge of their scalability, limited by weak interactions between the organic and inorganic building blocks. Here, comparing three top-down approaches to fabricate 2D MOF layers (sonication, freeze-thaw, and mechanical exfoliation), The technological criteria have established for creation of the layers of the thickness up to 1 nm with a record aspect ratio up to 2*10^4:1. The freezing-thaw and mechanical exfoliation are the most optimal approaches; wherein the rate and manufacturability of the mechanical exfoliation rivaling the greatest scalability of 2D MOF layers obtained by freezing-thaw (21300:1 vs 1330:1 aspect ratio), leaving the sonication approach behind (with a record 900:1 aspect ratio) have discovered. The high quality 2D MOF layers with a record aspect ratio demonstrate unique optical sensitivity to solvents of a varied polarity, which opens the way to fabricate scalable and freestanding 2D MOF-based atomically thin chemo-optical sensors by industry-oriented approach.
Collapse
Affiliation(s)
- Anastasiia S Efimova
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | - Pavel V Alekseevskiy
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | - Maria V Timofeeva
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | | | - Alina O Kuleshova
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | - Irina G Koryakina
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | - Dmitry I Pavlov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Taisiya S Sukhikh
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Andrei S Potapov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | | | - Nan Li
- Tianjin Key Laboratory of Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Valentin A Milichko
- School of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
- Université de Lorraine, CNRS, IJL, Nancy, F-54011, France
| |
Collapse
|
18
|
Pushkarna I, Pásztor Á, Renner C. Twist-Angle-Dependent Electronic Properties of Exfoliated Single Layer MoS 2 on Au(111). Nano Lett 2023; 23:9406-9412. [PMID: 37844067 PMCID: PMC10603799 DOI: 10.1021/acs.nanolett.3c02804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/29/2023] [Indexed: 10/18/2023]
Abstract
Synthetic materials and heterostructures obtained by the controlled stacking of exfoliated monolayers are emerging as attractive functional materials owing to their highly tunable properties. We present a detailed scanning tunneling microscopy and spectroscopy study of single layer MoS2-on-gold heterostructures as a function of the twist angle. We find that their electronic properties are determined by the hybridization of the constituent layers and are modulated at the moiré period. The hybridization depends on the layer alignment, and the modulation amplitude vanishes with increasing twist angle. We explain our observations in terms of a hybridization between the nearest sulfur and gold atoms, which becomes spatially more homogeneous and weaker as the moiré periodicity decreases with increasing twist angle, unveiling the possibility of tunable hybridization of electronic states via twist angle engineering.
Collapse
Affiliation(s)
| | | | - Christoph Renner
- Department of Quantum Matter
Physics, Université de Genève, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland
| |
Collapse
|
19
|
Pei Y, Li W, Wang L, Cui J, Li L, Ling S, Tang K, Tian H. Mesostructured Fibrils Exfoliated in Deep Eutectic Solvent as Building Blocks of Collagen Membranes. Polymers (Basel) 2023; 15:4008. [PMID: 37836057 PMCID: PMC10574992 DOI: 10.3390/polym15194008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 09/26/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
The mesoscale components of collagen (nanofibrils, fibrils, and fiber bundles) are well organized in native tissues, resulting in superior properties and diverse functions. In this paper, we present a simple and controlled liquid exfoliation method to directly extract medium-sized collagen fibers ranging from 102 to 159 nm in diameter from bovine Achilles tendon using urea/hydrochloric acid and a deep eutectic solvent (DES). In situ observations under polarized light microscopy (POM) and molecular dynamics simulations revealed the effects of urea and GuHCl on tendon collagen. FTIR study results confirmed that these fibrils retained the typical structural characteristics of type I collagen. These shed collagen fibrils were then used as building blocks to create independent collagen membranes with good and stable mechanical properties, excellent barrier properties, and cell compatibility. A new method for collagen processing is provided in this work by using DES-assisted liquid exfoliation for constructing robust collagen membranes with mesoscale collagen fibrils as building blocks.
Collapse
Affiliation(s)
- Ying Pei
- Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China;
- Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry Council, Beijing Technology and Business University, Beijing 100048, China
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; (W.L.); (L.W.); (K.T.)
| | - Wei Li
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; (W.L.); (L.W.); (K.T.)
| | - Lu Wang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; (W.L.); (L.W.); (K.T.)
| | - Jing Cui
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China;
| | - Lu Li
- Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China;
| | - Shengjie Ling
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China;
| | - Keyong Tang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; (W.L.); (L.W.); (K.T.)
| | - Huafeng Tian
- Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry Council, Beijing Technology and Business University, Beijing 100048, China
| |
Collapse
|
20
|
Ibrahim KB, Shifa TA, Bordin M, Moretti E, Wu HL, Vomiero A. Confinement Accelerates Water Oxidation Catalysis: Evidence from In Situ Studies. Small Methods 2023; 7:e2300348. [PMID: 37350490 DOI: 10.1002/smtd.202300348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Indexed: 06/24/2023]
Abstract
Basic insight into the structural evolution of electrocatalysts under operating conditions is of substantial importance for designing water oxidation catalysts. The first-row transition metal-based catalysts present state-of-the-art oxygen evolution reaction (OER) performance under alkaline conditions. Apparently, confinement has become an exciting strategy to boost the performance of these catalysts. The van der Waals (vdW) gaps of transition metal dichalcogenides are acknowledged to serve as a suitable platform to confine the first-row transition metal catalysts. This study focuses on confining Ni(OH)2 nanoparticle in the vdW gaps of 2D exfoliated SnS2 (Ex-SnS2 ) to accelerate water oxidation and to guarantee long term durability in alkaline solutions. The trends in oxidation states of Ni are probed during OER catalysis. The in situ studies confirm that the confined system produces a favorable environment for accelerated oxygen gas evolution, whereas the un-confined system proceeds with a relatively slower kinetics. The outstanding OER activity and excellent stability, with an overpotential of 300 mV at 100 mA cm-2 and Tafel slope as low as 93 mV dec-1 results from the confinement effect. This study sheds light on the OER mechanism of confined catalysis and opens up a way to develop efficient and low-cost electrocatalysts.
Collapse
Affiliation(s)
- Kassa Belay Ibrahim
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Mestre, 30170, Italy
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 10617, Taiwan
| | - Tofik Ahmed Shifa
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Mestre, 30170, Italy
| | - Matteo Bordin
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Mestre, 30170, Italy
| | - Elisa Moretti
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Mestre, 30170, Italy
| | - Heng-Liang Wu
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 10617, Taiwan
| | - Alberto Vomiero
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Mestre, 30170, Italy
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, SE-97187, Sweden
| |
Collapse
|
21
|
Kannan N, Ramani P. Comparative Analysis of Cytomorphology in Adolescent and Geriatric Patients: A Cross-Sectional Study. Cureus 2023; 15:e44753. [PMID: 37809272 PMCID: PMC10556376 DOI: 10.7759/cureus.44753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Background Exfoliation of the surface cells of the normal epithelium occurs as a result of physiological turnover. Epithelial cells are constantly renewed, and they are exfoliated or shed as they migrate from the basal layer to the uppermost layer of the epithelium. Oral exfoliative cytology involves the collection and microscopic evaluation of these shed cells or scraped epithelial cells, quantitatively and qualitatively. The objective of the present study was to analyze and compare the cytomorphometric features like cellular area, nuclear area, and nuclear-cytoplasmic ratio from buccal mucosal smears of adolescent and geriatric patients. This study highlights the changes in cell morphology in different age groups (adolescent and pediatric), which could be attributed to hormonal, habitual, and aging factors. Material and methods Buccal smear sample was collected from a total of 60 individuals belonging to the age groups of 11-19 years and above 60 years. The smears were stained with H&E and PAP (Papanicolaou) stain. Photomicrographs were taken in 40x, and measurements were calculated using ImageJ software (National Institutes of Health, Bethesda, Maryland, United States). Cellular size, nuclear size, and nucleo-cytoplasmic ratio were analyzed and compared between the two age groups using independent t-tests using IBM SPSS Statistics for Windows, Version 22.0 (Released 2013; IBM Corp., Armonk, New York, United States). Results A significant difference was observed in the cellular area and nuclear area between the two age groups with a p-value of 0.00. No significant findings were present in the nucleo-cytoplasmic area of the two age groups. Conclusion Cytomorphometric analysis has shown that there were variations in the cytoplasmic and nuclear areas among different age groups.
Collapse
Affiliation(s)
- Neha Kannan
- Oral and Maxillofacial Pathology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (Deemed to be University), Chennai, IND
| | - Pratibha Ramani
- Oral Pathology and Microbiology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (Deemed to be University), Chennai, IND
| |
Collapse
|
22
|
Lavi A, Ohayon‐Lavi A, Leibovitch Y, Hayun S, Ruse E, Regev O. Thermally Conductive Molten Salt for Thermal Energy Storage: Synergistic Effect of a Hybrid Graphite-Graphene Nanoplatelet Filler. Glob Chall 2023; 7:2300053. [PMID: 37745830 PMCID: PMC10517311 DOI: 10.1002/gch2.202300053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/26/2023] [Indexed: 09/26/2023]
Abstract
Renewable energy technologies depend, to a large extent, on the efficiency of thermal energy storage (TES) devices. In such storage applications, molten salts constitute an attractive platform due to their thermal and environmentally friendly properties. However, the low thermal conductivity (TC) of these salts (<1 W m-1 K-1) downgrades the storage kinetics. A commonly used method to enhance TC is the addition of highly conductive carbon-based fillers that form a composite material with molten salt. However, even that enhancement is rather limited (<9 W m-1 K-1). In this study, the partial exfoliation of graphite to graphene nanoplatelets (GnP) in a molten salt matrix is explored as a means to address this problem. A novel approach of hybrid filler formation directly in the molten salt is used to produce graphite-GnP-salt hybrid composite material. The good dispersion quality of the fillers in the salt matrix facilitates bridging between large graphite particles by the smaller GnP particles, resulting in the formation of a thermally conductive network. The thermal conductivity of the hybrid composite (up to 44 W m-1 K-1) is thus enhanced by two orders of magnitude versus that of the pristine salt (0.64 W m-1 K-1).
Collapse
Affiliation(s)
- Adi Lavi
- Department of Chemical EngineeringBen‐Gurion University of the NegevBeer‐Sheva84105Israel
- Department of ChemistryNuclear Research Center‐NegevP.O.B. 9001Beer‐Sheva84190Israel
| | - Avia Ohayon‐Lavi
- Department of Chemical EngineeringBen‐Gurion University of the NegevBeer‐Sheva84105Israel
- Department of ChemistryNuclear Research Center‐NegevP.O.B. 9001Beer‐Sheva84190Israel
| | - Yelena Leibovitch
- Department of ChemistryNuclear Research Center‐NegevP.O.B. 9001Beer‐Sheva84190Israel
| | - Shmuel Hayun
- Department of Materials EngineeringBen‐Gurion University of the NegevBeer‐Sheva84105Israel
| | - Efrat Ruse
- Department of ChemistryNuclear Research Center‐NegevP.O.B. 9001Beer‐Sheva84190Israel
| | - Oren Regev
- Department of Chemical EngineeringBen‐Gurion University of the NegevBeer‐Sheva84105Israel
| |
Collapse
|
23
|
Alqahtani MD, Bin Jumah MN, Al-Hashimi A, Allam AA, Abukhadra MR, Bellucci S. Synthesis and Characterization of Methoxy-Exfoliated Montmorillonite Nanosheets as Potential Carriers of 5-Fluorouracil Drug with Enhanced Loading, Release, and Cytotoxicity Properties. Molecules 2023; 28:5895. [PMID: 37570864 PMCID: PMC10421137 DOI: 10.3390/molecules28155895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
Natural bentonite clay (BE) underwent modification steps that involved the exfoliation of its layers into separated nanosheets (EXBE) and further functionalization of these sheets with methanol, forming methoxy-exfoliated bentonite (Mth/EXBE). The synthetically modified products were investigated as enhanced carriers of 5-fluorouracil as compared to raw bentonite. The modification process strongly induced loading properties that increased to 214.4 mg/g (EXBE) and 282.6 mg/g (Mth/EXBE) instead of 124.9 mg/g for bentonite. The loading behaviors were illustrated based on the kinetic (pseudo-first-order model), classic isotherm (Langmuir model), and advanced isotherm modeling (monolayer model of one energy). The Mth/EBE carrier displays significantly higher loading site density (95.9 mg/g) as compared to EXBE (66.2 mg/g) and BE (44.9 mg/g). The loading numbers of 5-Fu in each site of BE, EXBE, and Mth/EXBE (>1) reflect the vertical orientation of these loaded ions involving multi-molecular processes. The loading processes that occurred appeared to be controlled by complex physical and weak chemical mechanisms, considering both Gaussian energy (<8 KJ/mol) as well as loading energy (<40 KJ/mol). The releasing patterns of EXBE and Mth/EXBE exhibit prolonged and continuous properties up to 100 h, with Mth/EXBE displaying much faster behaviors. Based on the release kinetic modeling, the release reactions exhibit non-Fickian transport release properties, validating cooperative diffusion and erosion release mechanisms. The cytotoxicity of 5-Fu is also significantly enhanced by these carriers: 5-Fu/BE (8.6% cell viability), 5-Fu/EXBE (2.21% cell viability), and 5-Fu/Mth/EXBE (0.73% cell viability).
Collapse
Affiliation(s)
- Mashael D. Alqahtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - May N. Bin Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Abdulrahman Al-Hashimi
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed A. Allam
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Mostafa R. Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Laboratory, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044 Frascati, Italy
| |
Collapse
|
24
|
Alqahtani MD, Nasser N, Bin Jumah MN, AlZahrani SA, Allam AA, Abukhadra MR, Bellucci S. Synthesis and Characterization of β-Cyclodextrin-Hybridized Exfoliated Kaolinite Single Nanosheets as Potential Carriers of Oxaliplatin with Enhanced Loading, Release, and Cytotoxic Properties. Materials (Basel) 2023; 16:4958. [PMID: 37512232 PMCID: PMC10381760 DOI: 10.3390/ma16144958] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023]
Abstract
Natural kaolinite was subjected to a successful exfoliation process into separated kaolinite nanosheets (KNs), followed by hybridization with β-cyclodextrin biopolymer (β-CD), forming an advanced bio-nanocomposite (β-CD/KNs). The synthetic products were evaluated as enhanced delivery structures for oxaliplatin chemotherapy (OXAPN). The hybridization of KNs with β-CD polymer notably enhanced the loading capacity to 355.3 mg/g (β-CD/KNs) as compared to 304.9 mg/g for KNs. The loading of OXAPN into both KNs and β-CD/KNs displayed traditional pseudo-first-order kinetics (R2 > 0.85) and a conventional Langmuir isotherm (R2 = 0.99). The synthetic β-CD/KNs validates a greater occupied effective site density (98.7 mg/g) than KNs (66.3 mg/g). Furthermore, the values of the n steric parameter (4.7 (KNs) and 3.6 (β-CD/KNs)) reveal the vertical orientation of the loaded molecules and the loading of them by multi-molecular mechanisms. These mechanisms are mainly physical processes based on the obtained Gaussian energy (<8 KJ/mol) and loading energy (<40 KJ/mol). The release profiles of both KNs and β-CD/KNs extend for about 120 h, with remarkably faster rates for β-CD/KNs. According to the release kinetic findings, the release of OXAPN displays non-Fickian transport behavior involving the cooperation of diffusion and erosion mechanisms. The KNs and β-CD/KNs as free particles showed considerable cytotoxicity and anticancer properties against HCT-116 cancer cell lines (71.4% cell viability (KNs) and 58.83% cell viability (β-CD/KNs)). Additionally, both KNs and β-CD/KNs significantly enhanced the OXAPN's cytotoxicity (2.04% cell viability (OXAPN/KNs) and 0.86% cell viability (OXAPN/β-CD/KNs).
Collapse
Affiliation(s)
- Mashael D Alqahtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Nourhan Nasser
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - May N Bin Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Saleha A AlZahrani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - Mostafa R Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044 Frascati, Italy
| |
Collapse
|
25
|
Alqahtani MD, Nasser N, Bin Jumah MN, AlZahrani SA, Allam AA, Abukhadra MR, Bellucci S. Insight into the Morphological Properties of Nano-Kaolinite (Nanoscrolls and Nanosheets) on Its Qualification as Delivery Structure of Oxaliplatin: Loading, Release, and Kinetic Studies. Molecules 2023; 28:5158. [PMID: 37446820 DOI: 10.3390/molecules28135158] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Natural kaolinite underwent advanced morphological-modification processes that involved exfoliation of its layers into separated single nanosheets (KNs) and scrolled nanoparticles as nanotubes (KNTs). Synthetic nanostructures have been characterized as advanced and effective oxaliplatin-medication (OXAP) delivery systems. The morphological-transformation processes resulted in a remarkable enhancement in the loading capacity to 304.9 mg/g (KNs) and 473 mg/g (KNTs) instead of 29.6 mg/g for raw kaolinite. The loading reactions that occurred by KNs and KNTs displayed classic pseudo-first-order kinetics (R2 > 0.90) and conventional Langmuir isotherms (R2 = 0.99). KNTs exhibit a higher active site density (80.8 mg/g) in comparison to KNs (66.3 mg/g) and raw kaolinite (6.5 mg/g). Furthermore, compared to KNs and raw kaolinite, each site on the surface of KNTs may hold up to six molecules of OXAP (n = 5.8), in comparison with five molecules for KNs. This was accomplished by multi-molecular processes, including physical mechanisms considering both the Gaussian energy (<8 KJ/mol) and the loading energy (<40 KJ/mol). The release activity of OXAP from KNs and KNTs exhibits continuous and regulated profiles up to 100 h, either by KNs or KNTs, with substantially faster characteristics for KNTs. Based on the release kinetic investigations, the release processes have non-Fickian transport-release features, indicating cooperative-diffusion and erosion-release mechanisms. The synthesized structures have a significant cytotoxicity impact on HCT-116 cancer cell lines (KNs (71.4% cell viability and 143.6 g/mL IC-50); KNTs (11.3% cell viability and 114.3 g/mL IC-50). Additionally, these carriers dramatically increase OXAP's cytotoxicity (2.04% cell viability, 15.4 g/mL IC-50 (OXAP/KNs); 0.6% cell viability, 4.5 g/mL IC-50 (OXAP/KNTs)).
Collapse
Affiliation(s)
- Mashael Daghash Alqahtani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Nourhan Nasser
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - May N Bin Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Saleha A AlZahrani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - Mostafa R Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044 Frascati, Italy
| |
Collapse
|
26
|
Feng X, Lin X, Deng K, Yang H, Yan C. Facile Ball Milling Preparation of Flame-Retardant Polymer Materials: An Overview. Molecules 2023; 28:5090. [PMID: 37446752 DOI: 10.3390/molecules28135090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
To meet the growing needs of public safety and sustainable development, it is highly desirable to develop flame-retardant polymer materials using a facile and low-cost method. Although conventional solution chemical synthesis has proven to be an efficient way of developing flame retardants, it often requires organic solvents and a complicated separation process. In this review, we summarize the progress made in utilizing simple ball milling (an important type of mechanochemical approach) to fabricate flame retardants and flame-retardant polymer composites. To elaborate, we first present a basic introduction to ball milling, and its crushing, exfoliating, modifying, and reacting actions, as used in the development of high-performance flame retardants. Then, we report the mixing action of ball milling, as used in the preparation of flame-retardant polymer composites, especially in the formation of multifunctional segregated structures. Hopefully, this review will provide a reference for the study of developing flame-retardant polymer materials in a facile and feasible way.
Collapse
Affiliation(s)
- Xiaming Feng
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China
| | - Xiang Lin
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China
| | - Kaiwen Deng
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China
| | - Hongyu Yang
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China
| | - Cheng Yan
- Department of Mechanical Engineering, Southern University and A&M College, Baton Rouge, LA 70813, USA
| |
Collapse
|
27
|
Nurdiwijayanto L, Hayashi K, Sakai N, Ebina Y, Tang DM, Ueda S, Osada M, Tsukagoshi K, Sasaki T, Taniguchi T. Thermal and Chemical Phase Engineering of Two-Dimensional Ruthenate. ACS Nano 2023. [PMID: 37366239 DOI: 10.1021/acsnano.3c01017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Monolayer ruthenate nanosheets obtained by exfoliating layered ruthenium oxide exhibit excellent electrical conductivity, redox activity, and catalytic activity, which render them suitable for advanced electronic and energy devices. However, to fully exploit the benefits, we require further structural insights into a complex polymorphic nature and diversity in relevant electronic states of two-dimensional (2D) ruthenate systems. In this study, the 2D structures, stability, and electronic states of 2D ruthenate are investigated on the basis of thermal and chemical phase engineering approaches. We reveal that contrary to a previous report, exfoliation of an oblique 1T phase precursor leads to nanosheets having an identical phase without exfoliation-induced phase transition to a 1H phase. The oblique 1T phase in the nanosheets is found to be metastable and, thus, transforms successively to a rectangular 1T phase upon heating. A phase-controllable synthesis via Co doping affords nanosheets with metastable rectangular and thermally stable hexagonal 1T phases at a Co content of 5-10 and 20 at%, respectively. The 1T phases show metallic electronic states, where the d-d optical transitions between the Ru 4d (t2g) orbital depend on the symmetry of the Ru framework. The Co doping in ruthenate nanosheets unexpectedly suppresses the redox and catalytic activities under acidic conditions. In contrast, the Co2+/3+ redox pair is activated and produces conductive nanosheets with high electrochemical capacitance in an alkaline condition.
Collapse
Affiliation(s)
- Leanddas Nurdiwijayanto
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Kensuke Hayashi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Nobuyuki Sakai
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasuo Ebina
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Dai-Ming Tang
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Shigenori Ueda
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Minoru Osada
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Institute of Materials and Systems for Sustainability, Nagoya University, Furocho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kazuhito Tsukagoshi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takaaki Taniguchi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| |
Collapse
|
28
|
Kwak HM, Lee JS, Park BI, Baik J, Kim J, Jeong WL, Kim KP, Mun SH, Kim H, Kim J, Lee DS. Stability of Graphene and Influence of AlN Surface Pits on GaN Remote Heteroepitaxy for Exfoliation. ACS Nano 2023. [PMID: 37279113 DOI: 10.1021/acsnano.3c02565] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Remote epitaxy is a promising technology that has recently attracted considerable attention, which enables the growth of thin films that copy the crystallographic characteristics of the substrate through two-dimensional material interlayers. The grown films can be exfoliated to form freestanding membranes, although it is often challenging to apply this technique if the substrate materials are prone to damage under harsh epitaxy conditions. For example, remote epitaxy of GaN thin films on graphene/GaN templates has not been achieved by a standard metal-organic chemical vapor deposition (MOCVD) method due to such damages. Here, we report GaN remote heteroepitaxy on graphene/AlN templates by MOCVD and investigate the influence of surface pits in AlN on the growth and exfoliation of GaN thin films. We first show the thermal stability of graphene before GaN growth, based on which two-step growth of GaN on graphene/AlN is developed. The GaN samples are successfully exfoliated after the first step of the growth at 750 °C, whereas the exfoliation failed after the second step at 1050 °C. In-depth analysis confirms that the pits in AlN templates lead to the degradation of graphene near the area and thus the alteration of growth modes and the failure of exfoliation. These results exemplify the importance of chemical and topographic properties of growth templates for successful remote epitaxy. It is one of the key factors for III-nitride-based remote epitaxy, and these results are expected to be of great help in realizing complete remote epitaxy using only MOCVD.
Collapse
Affiliation(s)
- Hoe-Min Kwak
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Je-Sung Lee
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Bo-In Park
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jaeyoung Baik
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jeongwoon Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Woo-Lim Jeong
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Kyung-Pil Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seung-Hyun Mun
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Hyunseok Kim
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jeehwan Kim
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Dong-Seon Lee
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
29
|
Grubišić-Čabo A, Michiardi M, Sanders CE, Bianchi M, Curcio D, Phuyal D, Berntsen MH, Guo Q, Dendzik M. In Situ Exfoliation Method of Large-Area 2D Materials. Adv Sci (Weinh) 2023:e2301243. [PMID: 37236159 PMCID: PMC10401183 DOI: 10.1002/advs.202301243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Indexed: 05/28/2023]
Abstract
2D materials provide a rich platform to study novel physical phenomena arising from quantum confinement of charge carriers. Many of these phenomena are discovered by surface sensitive techniques, such as photoemission spectroscopy, that work in ultra-high vacuum (UHV). Success in experimental studies of 2D materials, however, inherently relies on producing adsorbate-free, large-area, high-quality samples. The method that yields 2D materials of highest quality is mechanical exfoliation from bulk-grown samples. However, as this technique is traditionally performed in a dedicated environment, the transfer of samples into vacuum requires surface cleaning that might diminish the quality of the samples. In this article, a simple method for in situ exfoliation directly in UHV is reported, which yields large-area, single-layered films. Multiple metallic and semiconducting transition metal dichalcogenides are exfoliated in situ onto Au, Ag, and Ge. The exfoliated flakes are found to be of sub-millimeter size with excellent crystallinity and purity, as supported by angle-resolved photoemission spectroscopy, atomic force microscopy, and low-energy electron diffraction. The approach is well-suited for air-sensitive 2D materials, enabling the study of a new suite of electronic properties. In addition, the exfoliation of surface alloys and the possibility of controlling the substrate-2D material twist angle is demonstrated.
Collapse
Affiliation(s)
- Antonija Grubišić-Čabo
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, 9747 AG, The Netherlands
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, Stockholm, 114 19, Sweden
| | - Matteo Michiardi
- Quantum Matter Institute, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Charlotte E Sanders
- Central Laser Facility, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Campus, Didcot, 0X11 0QX, UK
| | - Marco Bianchi
- School of Physics and Astronomy, Aarhus University, Aarhus, 8000 C, Denmark
| | - Davide Curcio
- School of Physics and Astronomy, Aarhus University, Aarhus, 8000 C, Denmark
| | - Dibya Phuyal
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, Stockholm, 114 19, Sweden
| | - Magnus H Berntsen
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, Stockholm, 114 19, Sweden
| | - Qinda Guo
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, Stockholm, 114 19, Sweden
| | - Maciej Dendzik
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, Stockholm, 114 19, Sweden
| |
Collapse
|
30
|
Wang J, Fan Y, Jiang J, Wan Z, Pang S, Guan Y, Xu H, He X, Ma Y, Huang A, Wu P. Layered Zeolite for Assembly of Two-Dimensional Separation Membranes for Hydrogen Purification. Angew Chem Int Ed Engl 2023:e202304734. [PMID: 37118980 DOI: 10.1002/anie.202304734] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 04/30/2023]
Abstract
Membrane separation is an energy-efficient and environmentally friendly process. Two-dimensional (2D) molecular sieving membranes featuring unique nanopores and low transport resistance have the potential to achieve highly permeable and selective mixture separation with low energy consumption. High-aspect-ratio zeolite nanosheets with intrinsic molecular-sieving pores perpendicular to the layers are desirable building blocks for fabricating high-performance 2D zeolite membrane. However, a wider application of 2D zeolitic membranes is restricted by the limited number of recognized zeolite nanosheets. Herein, we report a swollen layered zeolite, ECNU-28, with SZR topology and eight-member ring (8-MR, 3.0 Å × 4.8 Å) pores normal to the nanosheets. It can be easily exfoliated to construct 2D membrane, which shows a high hydrogen selectivity up to 130 from natural gas and is promising for hydrogen purification and greenhouse gas capture.
Collapse
Affiliation(s)
- Jilong Wang
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Yaqi Fan
- ShanghaiTech University, School of Physical Science and Technology, CHINA
| | - Jingang Jiang
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Zheng Wan
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Shuyue Pang
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Yejun Guan
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Hao Xu
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Xiao He
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Yanhang Ma
- ShanghaiTech University, School of Physical Science and Technology, CHINA
| | - Aisheng Huang
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Peng Wu
- East China Normal Univeristy, Department of Chemistry, North Zhongshan Rd. 3663, 200062, Shanghai, CHINA
| |
Collapse
|
31
|
Gardner Z, Rahpeima S, Sun Q, Zou J, Darwish N, Vimalanathan K, Raston CL. High Shear Thin Film Synthesis of Partially Oxidized Gallium and Indium Composite 2D Sheets. Small 2023:e2300577. [PMID: 37010011 DOI: 10.1002/smll.202300577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Reducing resistance in silicon-based devices is important as they get miniaturized further. 2D materials offer an opportunity to increase conductivity whilst reducing size. A scalable, environmentally benign method is developed for preparing partially oxidized gallium/indium sheets down to 10 nm thick from a eutectic melt of the two metals. Exfoliation of the planar/corrugated oxide skin of the melt is achieved using the vortex fluidic device with a variation in composition across the sheets determined using Auger spectroscopy. From an application perspective, the oxidized gallium indium sheets reduce the contact resistance between metals such as platinum and silicon (Si) as a semiconductor. Current-voltage measurements between a platinum atomic force microscopy tip and a Si-H substrate show that the current switches from being a rectifier to a highly conducting ohmic contact. These characteristics offer new opportunities for controlling Si surface properties at the nanoscale and enable the integration of new materials with Si platforms.
Collapse
Affiliation(s)
- Zoe Gardner
- Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA, 5001, Australia
| | - Soraya Rahpeima
- Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA, 5001, Australia
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, 6102, Australia
| | - Qiang Sun
- School of Mechanical and Mining Engineering and Centre for Microscopy and Microanalysis, University of Queensland, St Lucia, QLD, 4072, Australia
| | - Jin Zou
- School of Mechanical and Mining Engineering and Centre for Microscopy and Microanalysis, University of Queensland, St Lucia, QLD, 4072, Australia
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, 6102, Australia
| | - Kasturi Vimalanathan
- Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA, 5001, Australia
| | - Colin L Raston
- Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA, 5001, Australia
| |
Collapse
|
32
|
Sener H, Polat OA, Sener ABG. Optic nerve head vessel density in patients with pseudo exfoliation syndrome/glaucoma: a systematic review and meta-analysis. Photodiagnosis Photodyn Ther 2023; 42:103514. [PMID: 36933675 DOI: 10.1016/j.pdpdt.2023.103514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/18/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
PURPOSE Exfoliative material has been shown to accumulate in ocular and systemic tissues. We aimed to perform a systematic review and meta-analysis of the current literature evaluating optic nerve head vessel density (VD) using optical coherence tomography angiography (OCTA) in patients with XFS and XFG. METHODS Studies were retrieved from PubMed, Scopus, and Web of Science databases. Studies comparing patients with XFS and/or XFG patients to healthy controls, using the optic nerve head-centred 4.5 × 4.5 mm square OCTA scan protocol were included. Pooled results are presented as standardised mean differences with 95% confidence intervals (CI). Meta-regression analysis was performed between mean difference in circumpapillary VD between XFG and controls and mean pRNFL thickness in patients with XFG. RESULTS Fifteen studies with 1475 eyes were included in this review. Whole image VD and circumpapillary VD (cpVD) were significantly decreased in patients with XFS [-0.78(95% Cl: -1.08, -0.47); [-0.55(95% Cl: -0.80, -0.30); respectively] and XFG [-1.85(95% CI: -2.33, -1.36); -1.84 (95% CI: -2.30, -1.39); respectively] compared to healthy controls. Furthermore, pRNFL thickness decreased in patients with XFS [-0.55(95% Cl: -0.72, -0.35)] and XFG [-1.78(95% Cl: -2.21, -1.36)] compared to healthy controls. Meta-regression showed that pRNFL thickness decreased with increasing mean cpVD difference in XFG patients compared to healthy controls. CONCLUSIONS OCTA provides non-invasive, objective and reproducible assessment of peripapillary VD and is important for the detection of vasculopathy in patients with XFS or XFG. This study provides strong evidence for decreased cpVD in the eyes of patients with XFS and XFG.
Collapse
Affiliation(s)
- Hidayet Sener
- Department of Ophthalmology, Erciyes University Medical Faculty, Kayseri, Turkey.
| | - Osman Ahmet Polat
- Department of Ophthalmology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Ayse Busra Gunay Sener
- Department of Medical Informatics and Biostatistics, Erciyes University Medical Faculty, Kayseri, Turkey
| |
Collapse
|
33
|
Gunda H, Ray KG, Klebanoff LE, Dun C, Marple MAT, Li S, Sharma P, Friddle RW, Sugar JD, Snider JL, Horton RD, Davis BC, Chames JM, Liu YS, Guo J, Mason HE, Urban JJ, Wood BC, Allendorf MD, Jasuja K, Stavila V. Hydrogen Storage in Partially Exfoliated Magnesium Diboride Multilayers. Small 2023; 19:e2205487. [PMID: 36470595 DOI: 10.1002/smll.202205487] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/26/2022] [Indexed: 06/17/2023]
Abstract
Metal boride nanostructures have shown significant promise for hydrogen storage applications. However, the synthesis of nanoscale metal boride particles is challenging because of their high surface energy, strong inter- and intraplanar bonding, and difficult-to-control surface termination. Here, it is demonstrated that mechanochemical exfoliation of magnesium diboride in zirconia produces 3-4 nm ultrathin MgB2 nanosheets (multilayers) in high yield. High-pressure hydrogenation of these multilayers at 70 MPa and 330 °C followed by dehydrogenation at 390 °C reveals a hydrogen capacity of 5.1 wt%, which is ≈50 times larger than the capacity of bulk MgB2 under the same conditions. This enhancement is attributed to the creation of defective sites by ball-milling and incomplete Mg surface coverage in MgB2 multilayers, which disrupts the stable boron-boron ring structure. The density functional theory calculations indicate that the balance of Mg on the MgB2 nanosheet surface changes as the material hydrogenates, as it is energetically favorable to trade a small number of Mg vacancies in Mg(BH4 )2 for greater Mg coverage on the MgB2 surface. The exfoliation and creation of ultrathin layers is a promising new direction for 2D metal boride/borohydride research with the potential to achieve high-capacity reversible hydrogen storage at more moderate pressures and temperatures.
Collapse
Affiliation(s)
- Harini Gunda
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
- Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Keith G Ray
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | | | - Chaochao Dun
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Maxwell A T Marple
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Sichi Li
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Peter Sharma
- Sandia National Laboratories, 1515 Eubank SE, Albuquerque, NM, 87185, USA
| | - Raymond W Friddle
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Joshua D Sugar
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Jonathan L Snider
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Robert D Horton
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Brendan C Davis
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Jeffery M Chames
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Yi-Sheng Liu
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jinghua Guo
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Harris E Mason
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Jeffrey J Urban
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Brandon C Wood
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Mark D Allendorf
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Kabeer Jasuja
- Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Vitalie Stavila
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| |
Collapse
|
34
|
Li M, Yin B, Gao C, Guo J, Zhao C, Jia C, Guo X. Graphene: Preparation, tailoring, and modification. Exploration (Beijing) 2023; 3:20210233. [PMID: 37323621 PMCID: PMC10190957 DOI: 10.1002/exp.20210233] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 07/05/2022] [Indexed: 06/17/2023]
Abstract
Graphene is a 2D material with fruitful electrical properties, which can be efficiently prepared, tailored, and modified for a variety of applications, particularly in the field of optoelectronic devices thanks to its planar hexagonal lattice structure. To date, graphene has been prepared using a variety of bottom-up growth and top-down exfoliation techniques. To prepare high-quality graphene with high yield, a variety of physical exfoliation methods, such as mechanical exfoliation, anode bonding exfoliation, and metal-assisted exfoliation, have been developed. To adjust the properties of graphene, different tailoring processes have been emerged to precisely pattern graphene, such as gas etching and electron beam lithography. Due to the differences in reactivity and thermal stability of different regions, anisotropic tailoring of graphene can be achieved by using gases as the etchant. To meet practical requirements, further chemical functionalization at the edge and basal plane of graphene has been extensively utilized to modify its properties. The integration and application of graphene devices is facilitated by the combination of graphene preparation, tailoring, and modification. This review focuses on several important strategies for graphene preparation, tailoring, and modification that have recently been developed, providing a foundation for its potential applications.
Collapse
Affiliation(s)
- Mingyao Li
- Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
| | - Bing Yin
- Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
| | - Chunyan Gao
- Center of Single‐Molecule Sciences, Institute of Modern Optics, Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology, Frontiers Science Center for New Organic Matter, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina
| | - Jie Guo
- Center of Single‐Molecule Sciences, Institute of Modern Optics, Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology, Frontiers Science Center for New Organic Matter, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina
| | - Cong Zhao
- Center of Single‐Molecule Sciences, Institute of Modern Optics, Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology, Frontiers Science Center for New Organic Matter, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina
| | - Chuancheng Jia
- Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
- Center of Single‐Molecule Sciences, Institute of Modern Optics, Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology, Frontiers Science Center for New Organic Matter, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina
| | - Xuefeng Guo
- Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
- Center of Single‐Molecule Sciences, Institute of Modern Optics, Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology, Frontiers Science Center for New Organic Matter, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina
| |
Collapse
|
35
|
Broeck MVD, Bels LD, Duchateau L, Cornillie P. Time and sequence of the replacement of the deciduous by the permanent dentition in dogs and its applicability for age estimation. Anat Histol Embryol 2023; 52:460-489. [PMID: 36692220 DOI: 10.1111/ahe.12904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/03/2022] [Accepted: 01/07/2023] [Indexed: 01/25/2023]
Abstract
This study investigated the influence of several covariates on the time and sequence of permanent dentition emergence following exfoliation of the deciduous teeth in puppies. The aim was to determine whether the emergence of permanent dentition can be used to assess whether a puppy that is traded across borders in the EU has reached the legally required minimum age of 15 weeks. The events were evaluated in a longitudinal study, with some cross-sectional observations, of 440 puppies belonging to 82 breeds. No significant differences were found between the left and right sides of a puppy's dentition nor between male and female puppies. Breed size and skull type had a significant impact: both the appearance and the completion of tooth eruption occurred considerably later in small or toy breeds and brachycephalic skull type breeds. The sequence of emergence differed little between maxillary or mandibular quadrants or between breeds. The first emerging elements were the maxillary first premolars or first incisors or the mandibular first incisors. The emergence of a permanent tooth usually occurred within 3 days before or after exfoliation of its precursor, except for the canines, which demonstrated a wider tooth replacement interval. This study presents standards for age assessment based on the emergence of permanent dentition for breeds of different sizes, using median ages or cumulative emergence percentages. However, the legal age determination of puppies with an assumed age of 15 weeks cannot be performed based on permanent dentition emergence, as this occurred at a later age in a large proportion of dogs (at least 95%) in our studied population. The probability of being at least 15 weeks old when at least one maxillary tooth has emerged was at least 72.25%, depending on breed size.
Collapse
Affiliation(s)
- Martine Van den Broeck
- Department of Morphology, Imaging, Orthopedics, Rehabilitation and Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Lobke De Bels
- Department of Morphology, Imaging, Orthopedics, Rehabilitation and Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Luc Duchateau
- Biometrics Research Center, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Pieter Cornillie
- Department of Morphology, Imaging, Orthopedics, Rehabilitation and Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| |
Collapse
|
36
|
Sukhanova EV, Sagatov NE, Oreshonkov AS, Gavryushkin PN, Popov ZI. Halogen-Doped Chevrel Phase Janus Monolayers for Photocatalytic Water Splitting. Nanomaterials (Basel) 2023; 13:368. [PMID: 36678120 PMCID: PMC9860981 DOI: 10.3390/nano13020368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Chevrel non-van der Waals crystals are promising candidates for the fabrication of novel 2D materials due to their versatile crystal structure formed by covalently bonded (Mo6X8) clusters (X-chalcogen atom). Here, we present a comprehensive theoretical study of the stability and properties of Mo-based Janus 2D structures with Chevrel structures consisting of chalcogen and halogen atoms via density functional theory calculations. Based on the analysis performed, we determined that the S2Mo3I2 monolayer is the most promising structure for overall photocatalytic water-splitting application due to its appropriate band alignment and its ability to absorb visible light. The modulated Raman spectra for the representative structures can serve as a blueprint for future experimental verification of the proposed structures.
Collapse
Affiliation(s)
- Ekaterina V. Sukhanova
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
| | - Nursultan E. Sagatov
- Laboratory of Phase Transformations and State Diagrams of the Earth’s Matter at High Pressures, Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Aleksandr S. Oreshonkov
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
- School of Engineering and Construction, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Pavel N. Gavryushkin
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
- Laboratory of Phase Transformations and State Diagrams of the Earth’s Matter at High Pressures, Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Geology Geophysics Department, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Zakhar I. Popov
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
| |
Collapse
|
37
|
Chen Y, Sun H, Peng T, Gao T, Ding W, Hui T, Jiang L. The Expanded Vermiculite Was Quickly Prepared by the Catalytic Action of Manganese Dioxide on Hydrogen Peroxide and Its Adsorption Properties to Cd. Molecules 2023; 28:molecules28020817. [PMID: 36677875 PMCID: PMC9865089 DOI: 10.3390/molecules28020817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/05/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
The structure and activity of vermiculite can be maintained by expanding vermiculite (Vrm) with hydrogen peroxide. However, it is time-consuming. In past studies, little attention has been paid to the catalytic properties of manganese dioxide on hydrogen peroxide to improve the swelling efficiency of vermiculite. In this experiment, this catalytic effect was utilized to swell Vrm in a short time. The samples were then used to adsorb Cd from the solution. Through a series of characterization tests. The results showed that the exothermic rate was 1960.42-2089.164 J/min and the total exothermic heat was 39,208.4-41,783.28 J when expanding 10 gVrm, which could have a good expansion effect. The expansion was completed in about 40 min. Compared with Vrm, the adsorption of Cd is enhanced by about 30%. It is consistent with the proposed secondary kinetic adsorption model. This study provides a new perspective and theoretical guidance for improving the efficiency of Vrm stripping by hydrogen peroxide. A kind of expanded Vrm with better Cd adsorption efficiency was also prepared.
Collapse
Affiliation(s)
- Yunzhu Chen
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Department of Resources & Environment, Xichang University, Xichang 615000, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| | - Hongjuan Sun
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
- Correspondence:
| | - Tongjiang Peng
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| | - Tongxi Gao
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| | - Wenjin Ding
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| | - Tao Hui
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| | - Lei Jiang
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
- Institute of Mineral Materials and Application, Southwest University of Science and Technology, Mianyang 621010, China
| |
Collapse
|
38
|
Yang H, Xi S, Guo N, Wang M, Liu L, Lyu P, Yu X, Li J, Xu H, Hai X, Li Z, Li X, Sun T, Zhao X, Han Y, Yu W, Wu J, Zhang C, Fei H, Koh MJ, Lu J. Catalytically active atomically thin cuprate with periodic Cu single sites. Natl Sci Rev 2023; 10:nwac100. [PMID: 36879660 PMCID: PMC9985158 DOI: 10.1093/nsr/nwac100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 03/29/2022] [Accepted: 03/29/2022] [Indexed: 11/14/2022] Open
Abstract
Rational design and synthesis of catalytically active two-dimensional (2D) materials with an abundance of atomically precise active sites in their basal planes remains a great challenge. Here, we report a ligand exchange strategy to exfoliate bulk [Cu4(OH)6][O3S(CH2)4SO3] cuprate crystals into atomically thin 2D cuprate layers ([Cu2(OH)3]+). The basal plane of 2D cuprate layers contains periodic arrays of accessible unsaturated Cu(II) single sites (2D-CuSSs), which are found to promote efficient oxidative Chan-Lam coupling. Our mechanistic studies reveal that the reactions proceed via coordinatively unsaturated CuO4(II) single sites with the formation of Cu(I) species in the rate-limiting step, as corroborated by both operando experimental and theoretical studies. The robust stability of 2D-CuSSs in both batch and continuous flow reactions, coupled with their recyclability and good performance in complex molecule derivatization, render 2D-CuSSs attractive catalyst candidates for broad utility in fine chemical synthesis.
Collapse
Affiliation(s)
- Huimin Yang
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, Singapore 627833, Singapore
| | - Na Guo
- Department of Physics, National University of Singapore, Singapore 117542, Singapore
| | - Mu Wang
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Lingmei Liu
- Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Pin Lyu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xiaolong Yu
- SDU-ANU Joint Science College, Shandong University, Weihai264209, China
| | - Jing Li
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Haomin Xu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xiao Hai
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Zejun Li
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xinzhe Li
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Tao Sun
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xiaoxu Zhao
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Yu Han
- Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Wei Yu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Jie Wu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Chun Zhang
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Department of Physics, National University of Singapore, Singapore 117542, Singapore.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117546, Singapore
| | - Honghan Fei
- Department of Chemistry, Tongji University, Shanghai200092, China
| | - Ming Joo Koh
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Jiong Lu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117546, Singapore
| |
Collapse
|
39
|
Zhu Z, Xu X, Yao Y, Guo C, Chen J, Zhang Y, Wu K. Liquid Metal-Assisted High-Efficiency Exfoliation of Boron Nitride for Electrically Insulating Heat-Spreader Film. ACS Appl Mater Interfaces 2022; 14:54256-54265. [PMID: 36414259 DOI: 10.1021/acsami.2c17237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Boron nitride nanosheets (BNNSs) are regarded as promising two-dimensional materials in thermally conductive yet electrically insulating applications. Attributed to the strong interlayer "lip-lip" interactions in bulk hexagonal boron nitride (h-BN), high-efficiency exfoliation and scalable fabrication of BNNSs via the top-down strategies remain formidable challenges. Herein, an interesting observation is manifested that gallium-based liquid metal (LM) forming robust coordination interactions with h-BN helps reduce the lip-lip interlayer interactions and thus facilitates successful exfoliation under intense shearing force. For example, employing the ball-milling technique, the BNNS yield can increase to 41.21% with the assistance of LM at only 2 h milling time. Its exfoliation efficiency (yield/time) reaches as high as 26.72%/h, more than 2-fold that of other previously reported methods, including sonication and other ball-milling methods. Moreover, the exfoliated BNNSs are still found to be highly electrically insulating with a band gap of 4.65 eV, showing prospective potential in thermally conductive yet electrical insulating applications. As a proof of concept, a microwave-transparent heat spreader (cellulose nanofiber/BNNSs) is fabricated and verified for applications in high-frequency thermal-management fields.
Collapse
Affiliation(s)
- Zheng Zhu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Xuran Xu
- College of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing210094, P. R. China
| | - Yihang Yao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Cong Guo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Jingyu Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Yongzheng Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
- College of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing210094, P. R. China
| | - Kai Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| |
Collapse
|
40
|
Abbas Q, Shinde PA, Abdelkareem MA, Alami AH, Mirzaeian M, Yadav A, Olabi AG. Graphene Synthesis Techniques and Environmental Applications. Materials (Basel) 2022; 15:7804. [PMID: 36363396 PMCID: PMC9658785 DOI: 10.3390/ma15217804] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/29/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Graphene is fundamentally a two-dimensional material with extraordinary optical, thermal, mechanical, and electrical characteristics. It has a versatile surface chemistry and large surface area. It is a carbon nanomaterial, which comprises sp2 hybridized carbon atoms placed in a hexagonal lattice with one-atom thickness, giving it a two-dimensional structure. A large number of synthesis techniques including epitaxial growth, liquid phase exfoliation, electrochemical exfoliation, mechanical exfoliation, and chemical vapor deposition are used for the synthesis of graphene. Graphene prepared using different techniques can have a number of benefits and deficiencies depending on its application. This study provides a summary of graphene preparation techniques and critically assesses the use of graphene, its derivates, and composites in environmental applications. These applications include the use of graphene as membrane material for the detoxication and purification of water, active material for gas sensing, heavy metal ions detection, and CO2 conversion. Furthermore, a trend analysis of both synthesis techniques and environmental applications of graphene has been performed by extracting and analyzing Scopus data from the past ten years. Finally, conclusions and outlook are provided to address the residual challenges related to the synthesis of the material and its use for environmental applications.
Collapse
Affiliation(s)
- Qaisar Abbas
- Sustainable Energy & Power Systems Research Centre, RISE, University of Sharjah, Sharjah 27272, United Arab Emirates
- School of Engineering, Computing & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Pragati A. Shinde
- Sustainable Energy & Power Systems Research Centre, RISE, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Mohammad Ali Abdelkareem
- Sustainable Energy & Power Systems Research Centre, RISE, University of Sharjah, Sharjah 27272, United Arab Emirates
- Chemical Engineering Department, Minia University, Minya 61519, Egypt
| | - Abdul Hai Alami
- Sustainable Energy & Power Systems Research Centre, RISE, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Mojtaba Mirzaeian
- School of Engineering, Computing & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi Avenue, 71, Almaty 050012, Kazakhstan
| | - Arti Yadav
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Abdul Ghani Olabi
- Sustainable Energy & Power Systems Research Centre, RISE, University of Sharjah, Sharjah 27272, United Arab Emirates
- Mechanical Engineering and Design, School of Engineering and Applied Science, Aston University Aston Triangle, Birmingham B4 7ET, UK
| |
Collapse
|
41
|
Razi S, Bhardwaj V, Ouellette S, Khan S, Azadegan C, Boyd T, Rao B. Demystifying the mechanism of action of professional facial peeling: In-vivo visualization and quantification of changes in inflammation, melanin and collagen using Vivascope® and ConfoScan®. Dermatol Ther 2022; 35:e15846. [PMID: 36129212 PMCID: PMC9787425 DOI: 10.1111/dth.15846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/16/2022] [Indexed: 12/30/2022]
Abstract
Professional peeling using chemicals (chemical peeling) is a popular non-surgical procedure commonly used for the treatment for photoaging, pigmentary disorders, scarring, fine lines, and wrinkles. The objective of our case study was to elucidate the mechanism of action of professional peels/peeling. For proof-of-concept, we used a commercial blended peel containing trichloroacetic acid and lactic acid. The facial peeling was performed by a physician on four subjects. These subjects were followed over time in the clinic to take clinical pictures and monitor surface and anatomical changes in inflammation, melanin, and collagen at regular intervals post-peel (5 min, 48 h, and day 9). Dermoscope and Vivascope® were used to image surface and subsurface anatomical changes, respectively, and ConfoScan® was used to quantify aforementioned anatomical changes. Based on Vivascope and ConfoScan analysis, we could see clear visual clinical evidence of controlled injury-healing mechanism of peel's action: immediate but transient onset of inflammation within 5 min (indicate injury response by skin), followed by melanin redistribution evident at 48 h (indicate activation of skin's defense system), and remodeled fibrous collagen network without any inflammatory cells on day 9 (healing response). To our knowledge, this is the first ever clinical study to deconvolute the mysterious mechanism of action of peels, in-vivo.
Collapse
Affiliation(s)
- Shazli Razi
- Department of Dermatology and PathologyRao DermatologyAtlantic HighlandsNew JerseyUSA
| | - Vinay Bhardwaj
- Department of Global Personal Care and Skin Health R&DColgate‐PalmolivePiscatawayNew JerseyUSA
| | - Samantha Ouellette
- Department of Dermatology and PathologyRao DermatologyAtlantic HighlandsNew JerseyUSA,Robert Wood Johnson Medical CenterRutgers UniversityNew BrunswickNew JerseyUSA
| | - Samavia Khan
- Department of Dermatology and PathologyRao DermatologyAtlantic HighlandsNew JerseyUSA,Robert Wood Johnson Medical CenterRutgers UniversityNew BrunswickNew JerseyUSA
| | - Chloe Azadegan
- Department of Global Personal Care and Skin Health R&DColgate‐PalmolivePiscatawayNew JerseyUSA,School of Arts and SciencesCell Biology and NeuroscienceNew BrunswickNew JerseyUSA
| | - Thomas Boyd
- Department of Global Personal Care and Skin Health R&DColgate‐PalmolivePiscatawayNew JerseyUSA
| | - Babar Rao
- Department of Dermatology and PathologyRao DermatologyAtlantic HighlandsNew JerseyUSA,Robert Wood Johnson Medical CenterRutgers UniversityNew BrunswickNew JerseyUSA
| |
Collapse
|
42
|
Goldie S, Degiacomi MT, Jiang S, Clark SJ, Erastova V, Coleman KS. Identification of Graphene Dispersion Agents through Molecular Fingerprints. ACS Nano 2022; 16:16109-16117. [PMID: 36166830 PMCID: PMC9620402 DOI: 10.1021/acsnano.2c04406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
The scalable production and dispersion of 2D materials, like graphene, is critical to enable their use in commercial applications. While liquid exfoliation is commonly used, solvents such as N-methyl-pyrrolidone (NMP) are toxic and difficult to scale up. However, the search for alternative solvents is hindered by the intimidating size of the chemical space. Here, we present a computational pipeline informing the identification of effective exfoliation agents. Classical molecular dynamics simulations provide statistical sampling of interactions, enabling the identification of key molecular descriptors for a successful solvent. The statistically representative configurations from these simulations, studied with quantum mechanical calculations, allow us to gain insights onto the chemophysical interactions at the surface-solvent interface. As an exemplar, through this pipeline we identify a potential graphene exfoliation agent 2-pyrrolidone and experimentally demonstrate it to be as effective as NMP. Our workflow can be generalized to any 2D material and solvent system, enabling the screening of a wide range of compounds and solvents to identify safer and cheaper means of producing dispersions.
Collapse
Affiliation(s)
- Stuart
J. Goldie
- Department
of Chemistry, Durham University, South Road, Durham, DH1 3LE, United
Kingdom
| | - Matteo T. Degiacomi
- Department
of Physics, Durham University, South Road, Durham, DH1 3LE, United
Kingdom
| | - Shan Jiang
- Department
of Chemistry, Durham University, South Road, Durham, DH1 3LE, United
Kingdom
| | - Stewart J. Clark
- Department
of Physics, Durham University, South Road, Durham, DH1 3LE, United
Kingdom
| | - Valentina Erastova
- School
of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, United Kingdom
| | - Karl S. Coleman
- Department
of Chemistry, Durham University, South Road, Durham, DH1 3LE, United
Kingdom
| |
Collapse
|
43
|
Ali L, Subhan F, Ayaz M, Hassan SSU, Byeon CC, Kim JS, Bungau S. Exfoliation of MoS 2 Quantum Dots: Recent Progress and Challenges. Nanomaterials (Basel) 2022; 12:3465. [PMID: 36234593 PMCID: PMC9565618 DOI: 10.3390/nano12193465] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Although, quantum dots (QDs) of two-dimensional (2D) molybdenum disulfide (MoS2) have shown great potential for various applications, such as sensing, catalysis, energy storage, and electronics. However, the lack of a simple, scalable, and inexpensive fabrication method for QDs is still a challenge. To overcome this challenge, a lot of attention has been given to the fabrication of QDs, and several fabrication strategies have been established. These exfoliation processes are mainly divided into two categories, the 'top-down' and 'bottom-up' methods. In this review, we have discussed different top-down exfoliation methods used for the fabrication of MoS2 QDs and the advantages and limitations of these methods. A detailed description of the various properties of QDs is also presented.
Collapse
Affiliation(s)
- Luqman Ali
- Department of Physics, Yeungnam University, Gyeongsan 38541, Korea
- School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Fazle Subhan
- Department of Physics, University of Lakki Marwat, Lakki Marwat 28420, Pakistan
| | - Muhammad Ayaz
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara 18000, Pakistan
| | - Syed Shams ul Hassan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
- Department of Natural Product Chemistry, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Clare Chisu Byeon
- School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Jong Su Kim
- Department of Physics, Yeungnam University, Gyeongsan 38541, Korea
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania
| |
Collapse
|
44
|
Park KH, Song SH. Graphene Quantum Dots with Blue and Yellow Luminescence Fabricated by Modulating Intercalation State. Materials (Basel) 2022; 15:6567. [PMID: 36233909 PMCID: PMC9572107 DOI: 10.3390/ma15196567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/08/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
The development of graphene quantum dots (GQDs) with low toxicity, excellent dispersibility, and high photostability has led to extensive progress in bio-imaging and optical sensing applications. However, one-pot synthesis and mass production of GQDs, and tuning their photoluminescence, remains a challenge. Here we demonstrate a simple and scalable method for fabricating GQDs with high size uniformity and chemical stability, via a sequential process of inserting alkali metal into graphite (Stage I: KC8 and Stage II: KC24) and exfoliation to GQDs in a selected solvent. Structural and optical measurements were conducted, and the emitted colors of the as-prepared GQDs were blue (KC8) and yellow (KC24), respectively. The stage of graphite intercalation in the compounds played an important role in the size and thickness of the GQD. The as-prepared GQDs had clear characteristic peaks consistent with the quantum confinement effect and intrinsic/extrinsic states. Our approach will provide great potential for a wide variety of bioimaging and bioanalysis applications.
Collapse
|
45
|
Shu Z, Cui X, Wang B, Yan H, Cai Y. Fast Intercalation of Lithium in Semi-Metallic γ-GeSe Nanosheet: A New Group-IV Monochalcogenide for Lithium-Ion Battery Application. ChemSusChem 2022; 15:e202200564. [PMID: 35680606 DOI: 10.1002/cssc.202200564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Existence of van der Waals gaps renders two-dimensional (2D) materials ideal passages of lithium for being used as anode materials. However, the requirement of good conductivity significantly limits the choice of 2D candidates. So far, only graphite is satisfying due to its relatively high conductivity. Recently, a new polymorph of layered germanium selenide (γ-GeSe) was proven to be semimetal in its bulk phase with a higher conductivity than graphite while its monolayer behaves semiconducting. In this work, by using first-principles calculations, the possibility was investigated of using this new group-IV monochalcogenide, γ-GeSe, as anode in Li-ion batteries (LIBs). The studies revealed that the Li atom would form an ionic adsorption with adjacent selenium atoms at the hollow site and exist in cationic state (lost 0.89 e to γ-GeSe). Results of climbing image-nudged elastic band showed the diffusion barrier of Li was 0.21 eV in the monolayer limit, which could activate a relatively fast diffusion even at room temperature on the γ-GeSe surface. The calculated theoretical average voltages ranged from 0.071 to 0.015 V at different stoichiometry of Lix GeSe with minor volume variation, suggesting its potential application as anode of LIBs. The predicted moderate binding energy, a low open-circuit voltage (comparable to graphite), and a fast motion of Li suggested that γ-GeSe nanosheet could be chemically exfoliated via Li intercalation and is a promising candidate as the anode material for LIBs.
Collapse
Affiliation(s)
- Zheng Shu
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau, China
| | - Xiangyue Cui
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau, China
| | - Bowen Wang
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau, China
| | - Hejin Yan
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau, China
| | - Yongqing Cai
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau, China
| |
Collapse
|
46
|
Wu J, Peng J, Sun H, Guo Y, Liu H, Wu C, Xie Y. Host-Guest Intercalation Chemistry for the Synthesis and Modification of Two-Dimensional Transition Metal Dichalcogenides. Adv Mater 2022; 34:e2200425. [PMID: 35233868 DOI: 10.1002/adma.202200425] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Intercalation chemistry is of great importance in solid-state physics and chemistry for the ability to modulate electronic structures for constructing new materials with exotic properties. This ancient and versatile discipline has recently become prevailing in the synthesis and regulation of 2D transition metal dichalcogenides (TMDs) with atomic thickness due to diverse host-guest configurations and their impact on layered frameworks, which bring in extensive applications in electronics, optoelectronics, and other energy-based devices. In order to prepare 2D TMD materials with desired structure and properties, it is essential to gain in-depth understanding of the key role the intercalation chemistry plays in the preparation process. A focused review on recent advances regarding 2D TMD materials through intercalation exfoliation from the view of host, guest, and solvent interactions is provided. The effect of intercalation chemistry on TMD nanosheets synthesis and modification is comprehensively reviewed. The interactions between host and guest from the aspects of lattice strain, interlayer distance, and carrier density are considered. Finally, a prospectus of the future research opportunities for the intercalation chemistry of 2D materials is provided.
Collapse
Affiliation(s)
- Jiajing Wu
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jing Peng
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Haofeng Sun
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yuqiao Guo
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Hongfei Liu
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Changzheng Wu
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yi Xie
- School of Chemistry and Materials Sciences, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, 230026, P. R. China
| |
Collapse
|
47
|
Canever N, Chen X, Wojcik M, Zhang H, Dai X, Dubois M, Nann T. Graphite-Mediated Microwave-Exfoliated Graphene Fluoride as Supercapacitor Electrodes. Nanomaterials (Basel) 2022; 12:1796. [PMID: 35683649 DOI: 10.3390/nano12111796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 02/05/2023]
Abstract
A graphite-mediated microwave-based strategy was used for solid-state exfoliation of graphite fluoride in a few seconds, followed by a simple yet efficient separation to obtain exfoliated materials based on the density difference between graphite and graphene fluoride in solvent. The microwave-exfoliated graphene fluoride was a few layers thick and electrically conductive. The electrochemical testing of pouch-cell supercapacitors assembled by using the exfoliated graphene fluoride electrodes and a novel microemulsion-based electrolyte showed reasonable performance with typical electrical double-layer capacitance behavior and good rate capability (gravimetric specific capacitance: 3.2 F g−1 at 500 mA g−1 and 3.1 F g−1 at 5000 mA g−1). The BET specific surface areas of the as-exfoliated graphene fluoride are ~60–80 m2 g−1, which could be increased by activation using this simple yet versatile microwave-based method for further improvements on the electrochemical performance.
Collapse
|
48
|
Elattar A, Li W, Suzuki H, Kambe T, Nishikawa T, Kyaw AKK, Hayashi Y. Single Crystals of Mixed-Cation Copper-Based Perovskite with Trimodal Bandgap Behavior. Chemistry 2022; 28:e202104316. [PMID: 35253943 DOI: 10.1002/chem.202104316] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Indexed: 01/08/2023]
Abstract
Two-dimensional (2D) hybrid perovskites with novel functionalities and structural diversity are a perfect platform for emerging optoelectronic devices such as photodetectors, light-emitting diodes, and solar cells. Here, we demonstrate that excess concentration of Cesium bromide (CsBr) is key to the formation of easily exfoliated 2D Cs2 Cu(Cl/Br)4 perovskite crystal. Furthermore, by employing this trick to 2D perovskite MA2 Cu(Cl/Br)4 (MA=methylammonium), we achieve a phase-pure easily exfoliated 2D mixed-cation (MA/Cs)2 Cu(Cl/Br)4 perovskite crystal, which exhibits reduced bandgap (1.53 eV) with ferromagnetic behavior and photovoltaic property. The resultant mixed-cation structured device reveals enhanced efficiency compared to all MA and all Cs counterparts. These findings demonstrate the importance of cation-engineering in developing innovative materials with novel properties.
Collapse
Affiliation(s)
- Amr Elattar
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan.,Department of Chemistry, Faculty of Science, Ain Shams University, 11566, Cairo, Egypt
| | - Wenhui Li
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting and Department of Electrical & Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Hiroo Suzuki
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Takashi Kambe
- Department of Physics, Okayama University, Okayama, 700-8530, Japan
| | - Takeshi Nishikawa
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Aung Ko Ko Kyaw
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting and Department of Electrical & Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.,Shenzhen Planck Innovation Technology Co., Ltd, No. 8, Liuhe Road, Longgang District, Shenzhen, 518100, Guangdong, P. R. China
| | - Yasuhiko Hayashi
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| |
Collapse
|
49
|
Li Y, Jiang C, Chen X, Jiang Y, Yao C. Yb 3+-Doped Two-Dimensional Upconverting Tb-MOF Nanosheets with Luminescence Sensing Properties. ACS Appl Mater Interfaces 2022; 14:8343-8352. [PMID: 35104398 DOI: 10.1021/acsami.2c00160] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this article, we synthesized a Yb3+-doped two-dimensional (2-D) upconverting Tb metal-organic framework (Tb-MOF) (hereinafter referred to as Tb-UCMOF) by a one-step solvothermal method. The synthesized Tb-UCMOF is composed of stacks of 2-D nanosheets with an average width distributed between 250 and 300 nm, and these nanosheets can be exfoliated by a simple liquid ultrasound method. The structural characteristics of this flaky particle accumulation are confirmed by the type IV adsorption-desorption isotherm with a H3-type adsorption hysteresis loop, and the Brunauer-Emmett-Teller surface of Tb-UCMOF is 143.9257 m2·g-1. Tb-UCMOF has characteristic emissions of Tb3+ which are located at 490, 545, 585, and 621 nm under 980 nm excitation. The upconverting luminescence mechanism is attributed to that Yb3+ absorbs multiple photons and transfers the energy to Tb3+, causing its 4f electrons to jump to the excited state, and then the upconverting emissions are obtained when electrons return to the ground state. Since the Tb-UCMOF nanosheets have high dispersibility and an obvious upconverting luminescent signal, we explored their luminescence sensing properties. The luminescence intensity is found to gradually decrease with the addition of Cu2+, the linear range of Cu2+ sensing is 0-1.4 μM, and the detection limit is 0.16 μM. This rapid, highly selective, and sensitive Cu2+ sensing indicates that 2-D upconverting MOF nanosheets have great application prospects in luminescence sensing and also promote the research of 2-D upconverting MOFs with specific recognition for the application of biological and environmental luminescent sensors.
Collapse
Affiliation(s)
- Yingxue Li
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Chen Jiang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiong Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Yuanhang Jiang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Cheng Yao
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| |
Collapse
|
50
|
Abstract
Two-dimensional (2D) materials are frequently associated with the sheets forming bulk layered compounds bonded by van der Waals (vdW) forces. The anisotropy and weak interaction between the sheets have also been the main criteria in the computational search for new 2D systems, predicting ∼2000 exfoliable compounds. However, some representatives of a new type of non-vdW 2D systems, without layered 3D analogues, were recently manufactured. For this novel materials class, data-driven design principles are still missing. Here, we outline a set of 8 binary and 20 ternary candidates by filtering the AFLOW-ICSD database according to structural prototypes. The oxidation state of the surface cations regulates the exfoliation energy with low oxidation numbers leading to weak bonding─a useful descriptor to obtain novel 2D materials also providing clear guidelines for experiments. A vast range of appealing electronic, optical, and magnetic properties make the candidates attractive for various applications and particularly spintronics.
Collapse
Affiliation(s)
- Rico Friedrich
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Center for Autonomous Materials Design, Duke University, Durham, North Carolina 27708, United States
| | - Mahdi Ghorbani-Asl
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Stefano Curtarolo
- Center for Autonomous Materials Design, Duke University, Durham, North Carolina 27708, United States
- Materials Science, Electrical Engineering, and Physics, Duke University, Durham, North Carolina 27708, United States
| | - Arkady V Krasheninnikov
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Department of Applied Physics, Aalto University, Aalto 00076, Finland
| |
Collapse
|