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Zhang X, Liu X, Liu Q, Feng Y, Qiu S, Wang T, Xu H, Li H, Yin L, Kang H, Fan Z. Reversible Constrained Dissociation and Reassembly of MXene Films. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309171. [PMID: 38582527 PMCID: PMC11186054 DOI: 10.1002/advs.202309171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/08/2024] [Indexed: 04/08/2024]
Abstract
Enabling materials to undergo reversible dynamic transformations akin to the behaviors of living organisms represents a critical challenge in the field of material assembly. The pursuit of such capabilities using conventional materials has largely been met with limited success. Herein, the discovery of reversible constrained dissociation and reconfiguration in MXene films, offering an effective solution to overcome this obstacle is reported. Specifically, MXene films permit rapid intercalation of water molecules between their distinctive layers, resulting in a significant expansion and exhibiting confined dissociation within constrained spaces. Meanwhile, the process of capillary compression driven by water evaporation reinstates the dissociated MXene film to its original compact state. Further, the adhesive properties emerging from the confined disassociation of MXene films can spontaneously induce fusion between separate films. Utilizing this attribute, complex structures of MXene films can be effortlessly foamed and interlayer porosity precisely controlled, using only water as the inducer. Additionally, a parallel phenomenon has been identified in graphene oxide films. This work not only provides fresh insights into the microscopic mechanisms of 2D materials such as MXene but also paves a transformative path for their macroscopic assembly applications in the future.
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Affiliation(s)
- Xuefeng Zhang
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Xudong Liu
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Qingqiang Liu
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Yufa Feng
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Si Qiu
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Ting Wang
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Huayu Xu
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Hao Li
- School of chemistry and Materials EngineeringGuangdong Provincial Key Laboratory for Electronic Functional Materials and DevicesHuizhou UniversityHuizhou516007China
| | - Liang Yin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Hui Kang
- Advanced Materials ThrustThe Hong Kong University of Science and Technology (Guangzhou)Guangzhou510000China
| | - Zhimin Fan
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin150001China
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Zhang Y, Zhan T, Ge X, Zhu X, Chen B. Sluggish and Ion-Resilient Behavior of Interfacial Aqueous Layer on Single-Layer Graphene Oxide: Insights from In Situ Atomic Force Microscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:6763-6771. [PMID: 38572777 DOI: 10.1021/acs.est.3c09739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Understanding interfacial interactions of graphene oxide (GO) is important to evaluate its colloidal behavior and environmental fate. Single-layer GO is the fundamental unit of GO colloids, and its interfacial aqueous layers critically dictate these interfacial interactions. However, conventional techniques like X-ray diffraction are limited to multilayer systems and are inapplicable to single-layer GO. Therefore, our study employed atomic force microscopy to precisely observe the in situ dynamic behaviors of interfacial aqueous layers on single-layer GO. The interfacial aqueous layer height was detected at the subnanometer level. In real-time monitoring, the single-layer height increased from 1.17 to 1.70 nm within 3 h immersion. This sluggish process is different from the rapid equilibration of multilayer GO in previous studies, underscoring a gradual transition in hydration kinetics. Ion strength exhibited negligible influence on the single-layer height, suggesting a resilient response of the interfacial aqueous layer to ion-related perturbations due to intricate ion interactions and electrical double-layer compression. Humic acid led to a substantial increase in the interfacial aqueous layers, improving the colloidal stability of GO and augmenting its potential for migration. These findings hold considerable significance regarding the environmental behaviors of the GO interfacial aqueous layer in ion- and organic-rich water and soil.
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Affiliation(s)
- Yuyao Zhang
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
- Department of Chemical & Environmental Engineering, School of Engineering and Applied Science, Yale University, New Haven, Connecticut 06511, United States
| | - Tingjie Zhan
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, New Jersey 08854, United States
| | - Xinfei Ge
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
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Iakunkov A, Lienert U, Sun J, Talyzin AV. Swelling of Ti 3 C 2 T x MXene in Water and Methanol at Extreme Pressure Conditions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307067. [PMID: 38095537 PMCID: PMC10916643 DOI: 10.1002/advs.202307067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/05/2023] [Indexed: 03/07/2024]
Abstract
Pressure-induced swelling has been reported earlier for several hydrophilic layered materials. MXene Ti3C2Tx is also a hydrophilic layered material composed by 2D sheets but so far pressure-induced swelling is reported for this material only under conditions of shear stress at MPa pressures. Here, high-pressure experiments are performed with MXenes prepared by two methods known to provide "clay-like" materials. MXene synthesized by etching MAX phase with HCl+LiF demonstrates the effect of pressure-induced swelling at 0.2 GPa with the insertion of additional water layer. The transition is incomplete with two swollen phases (ambient with d(001) = 16.7Å and pressure-induced with d(001) = 19.2Å at 0.2 GPa) co-existing up to the pressure point of water solidification. Therefore, the swelling transition corresponds to change from two-layer water intercalation (2L-phase) to a never previously observed three-layer water intercalation (3L-phase) of MXene. Experiments with MXene prepared by LiCl+HF etching have not revealed pressure-induced swelling in liquid water. Both MXenes also show no anomalous compressibility in liquid methanol. The presence of pressure-induced swelling only in one of the MXenes indicates that the HCl+LiF synthesis method is likely to result in higher abundance of hydrophilic functional groups terminating 2D titanium carbide.
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Affiliation(s)
| | | | - Jinhua Sun
- Department of Industrial and Materials ScienceChalmers University of TechnologyGöteborgSE‐412 96Sweden
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Baysal T, Güvensoy-Morkoyun A, Tantekin-Ersolmaz ŞB, Velioğlu S. Methanol recovery: potential of nanolaminate organic solvent nanofiltration (OSN) membranes. NANOSCALE 2024; 16:3393-3416. [PMID: 38230534 DOI: 10.1039/d3nr05611b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Researchers have made a significant breakthrough by merging the energy-saving attribute of organic solvent nanofiltration (OSN) with the remarkable solvent permeance and solute rejection of two-dimensional (2D) laminated membranes. This innovative approach brings forth a new era of sustainable and cost-effective separation techniques, presenting a promising solution to the issue of industrial solvents contaminating the environment. This development paves the way for new opportunities in building a sustainable future. Specifically, our mini-review has cast a spotlight on the separation and recovery of methanol-a solvent abundantly used in industrial processes. We systematically evaluated a diverse array of free-standing 2D nanolaminate OSN membranes. The analysis encompasses the assessment of pure methanol permeance, solute rejection capabilities, and the simultaneous evaluation of methanol permeance and solute rejection performance. Notably, this study sheds light on the considerable potential of 2D laminated OSN membranes in revolutionizing separation processes for the industrial use of methanol.
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Affiliation(s)
- Tuğba Baysal
- Institute of Nanotechnology, Gebze Technical University, Gebze, Kocaeli, 41400, Türkiye.
| | - Aysa Güvensoy-Morkoyun
- Department of Chemical Engineering, Istanbul Technical University, Maslak, Istanbul, 34469, Türkiye.
| | - Ş Birgül Tantekin-Ersolmaz
- Department of Chemical Engineering, Istanbul Technical University, Maslak, Istanbul, 34469, Türkiye.
- Synthetic Fuels & Chemicals Technology Center (SENTEK), Istanbul Technical University, Maslak, Istanbul, 34469, Türkiye
| | - Sadiye Velioğlu
- Institute of Nanotechnology, Gebze Technical University, Gebze, Kocaeli, 41400, Türkiye.
- Nanotechnology Research and Application Center (NUAM), Gebze Technical University, Gebze, Kocaeli, 41400, Türkiye
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Eliseev AA, Gurianov KE, Poyarkov AA, Komkova MA, Sadilov IS, Chumakov AP, Petukhov DI. Tunable Sieving of Ions Using Graphene Oxide: Swelling Peculiarities in Free-Standing and Confined States. NANO LETTERS 2023; 23:9719-9725. [PMID: 37889876 DOI: 10.1021/acs.nanolett.3c02247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
The paper describes a comparative study of swelling processes in free-standing graphene oxide (GO) membranes and GO laminates encapsulated with epoxy glue. For free-standing graphene oxide membranes, a huge variation in d-spacing in the range of 8-12 Å depending on the ambient humidity and from 12 to >30 Å depending on the electrolyte type and its concentration was revealed using direct in situ and in operando XRD studies. Limited swelling at various humidity levels as well as in electrolyte solution with low constriction/expansion of epoxy-encapsulated GO is counterposed to that of free-standing graphene oxides. The swelling suppression was explained by both physical constriction and the intercalation of amines into GO laminates, which was proved by local EDX studies. This results in ion diffusivity variation for over 2 orders of magnitude in free-standing and constrained graphene oxide membranes and provides factual evidence for tunable sieving of ions with confined graphene oxides.
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Affiliation(s)
- Andrei A Eliseev
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Konstantin E Gurianov
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Andrei A Poyarkov
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Maria A Komkova
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Ilia S Sadilov
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Andrei P Chumakov
- ESRF - The European Synchrotron, Avenue des Martyrs 71, Grenoble 38000, France
| | - Dmitrii I Petukhov
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
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Dong X, Liang B, Zhou Z, Du H, Wang H, Lu J, Liang C, Gong L, Li Y, Liang Z, Sun J, Qi H, Liu W, Chen X, Zheng Z. Growth and Local Structures of Single Crystalline Flakes of Three-Dimensional Covalent Organic Frameworks in Water. J Am Chem Soc 2023; 145:22079-22085. [PMID: 37784238 DOI: 10.1021/jacs.3c07684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Due to the enormous chemical and structural diversities and designable properties and functionalities, covalent organic frameworks (COFs) hold great promise as tailored materials for industrial applications in electronics, biology, and energy technologies. They were typically obtained as partially crystalline materials, although a few single-crystal three-dimensional (3D) COFs have been obtained recently with structures probed by diffraction techniques. However, it remains challenging to grow single-crystal COFs with controlled morphology and to elucidate the local structures of 3D COFs, imposing severe limitations on the applications and understanding of the local structure-property correlations. Herein, we develop a method for designed growth of five types of single crystalline flakes of 3D COFs with controlled morphology, front crystal facets, and defined edge structures as well as surface chemistry using surfactants that can be self-assembled into layered structures to confine crystal growth in water. The flakes enable direct observation of local structures including monomer units, pore structure, edge structure, grain boundary, and lattice distortion of 3D COFs as well as gradually curved surfaces in kinked but single crystalline 3D COFs with a resolution of up to ∼1.7 Å. In comparison with flakes of two-dimensional crystals, the synthesized flakes show much higher chemical, mechanical, and thermal stability.
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Affiliation(s)
- Xin Dong
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Baokun Liang
- Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, Ulm 89081, Germany
| | - Zhipeng Zhou
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Honglin Du
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences Peking University, Beijing 100000, China
| | - Honglei Wang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Jiaxing Lu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Chaolun Liang
- Instrumental Analysis Research Center, Sun Yat-sen University, Guangzhou 510000, China
| | - Li Gong
- Instrumental Analysis Research Center, Sun Yat-sen University, Guangzhou 510000, China
| | - Yuyao Li
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Zihao Liang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
| | - Junliang Sun
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences Peking University, Beijing 100000, China
| | - Haoyuan Qi
- Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, Ulm 89081, Germany
| | - Wei Liu
- Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering, and State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510000, China
| | - Xudong Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510000, China
- Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Jieyang 522000, China
| | - Zhikun Zheng
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University, Guangzhou 510000, China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510000, China
- Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Jieyang 522000, China
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7
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Carr AJ, Lee SE, Uysal A. Ion and water adsorption to graphene and graphene oxide surfaces. NANOSCALE 2023; 15:14319-14337. [PMID: 37561081 DOI: 10.1039/d3nr02452k] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Graphene and graphene oxide (GO) are two particularly promising nanomaterials for a range of applications including energy storage, catalysis, and separations. Understanding the nanoscale interactions between ions and water near graphene and GO surfaces is critical for advancing our fundamental knowledge of these systems and downstream application success. This minireview highlights the necessity of using surface-specific experimental probes and computational techniques to fully characterize these interfaces, including the nanomaterial, surrounding water, and any adsorbed ions, if present. Key experimental and simulation studies considering water and ion structures near both graphene and GO are discussed. The major findings are: water forms 1-3 hydration layers near graphene; ions adsorb electrostatically to graphene under an applied potential; the chemical and physical properties of GO vary considerably depending on the synthesis route; and these variations influence water and ion adsorption to GO. Lastly, we offer outlooks and perspectives for these research areas.
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Affiliation(s)
- Amanda J Carr
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Seung Eun Lee
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Ahmet Uysal
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
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Mandal S, Erimban S, Banerjee S, Daschakraborty S, Das P. Elucidating the relationship between red fluorescence and structural dynamics of carbon dots dispersed in different solvents. Phys Chem Chem Phys 2023; 25:23645-23657. [PMID: 37609834 DOI: 10.1039/d3cp02498a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The mechanism of intrinsic fluorescence of carbon dots (CDs), the latest nanomaterial from the carbon family, was supposedly deciphered through multiple theories. However, the much sought-after persistent red emission of CDs as a foreseeable consequence of experiments remains elusive prompting the question of whether tuning of the red emission of CDs is a predictable outcome or a serendipitous coincidence. Herein, we tried to decode the same by exploring Alizarin Red S (ARS)-based red emitting CDs in different solvents with wisely chosen analytical tools. The findings are aptly supported by molecular dynamics studies through an experimental intuition-driven model-building approach. Parallel interception of the CDs with powder X-ray diffraction (pXRD) and photophysical spectroscopic studies revealed an important relationship between the solvent and CDs. Tautomerism, a well-known phenomenon with chemical entities, was found to be operative for CDs that greatly influence the Stokes shift and ultimately the fluorescence outcome. Most importantly, pXRD studies established the turbostratism of the CDs where the well-ordered graphitic structure of CDs gets disrupted with solvent molecules. The extent of such disruption is a function of solvent and CD composition that plays a formidable role in obtaining red fluorescence. Thus, for the first time, we demonstrate that the red emission of CDs is related to its structural integrity and if taken care of could be sustained, a tremendously desirable outcome for relevant applications.
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Affiliation(s)
- Saptarshi Mandal
- Department of Biomedical Engineering, University of Kentucky, Lexington, 40536, USA
- Department of Chemistry, Indian Institute of Technology Patna, Bihta, 801103, India.
| | - Shakkira Erimban
- Department of Chemistry, Indian Institute of Technology Patna, Bihta, 801103, India.
- Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112-0850, USA
| | - Subhrajeet Banerjee
- Department of Chemistry, Indian Institute of Technology Patna, Bihta, 801103, India.
| | | | - Prolay Das
- Department of Chemistry, Indian Institute of Technology Patna, Bihta, 801103, India.
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Tang K, Zhu L, Lan P, Chen Y, Chen Z, Lan Y, Lan W. Regulating the thickness of nanofiltration membranes for efficient water purification. NANOSCALE ADVANCES 2023; 5:4770-4781. [PMID: 37705770 PMCID: PMC10496893 DOI: 10.1039/d3na00110e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 08/02/2023] [Indexed: 09/15/2023]
Abstract
Fabrication of an organic polymer nanofiltration membrane with both high water permeability and high salt rejection is still a big challenge. Herein, phytic acid (PhA)-modified graphene oxide (GO) was used as the membrane thickness modifier, which was introduced into the thin-film nanoparticle composite (TFN) membrane via in situ interfacial polymerization (IP) on a porous substrate. The water flux of the optimally tuned TFN-GP-0.2 composite membrane is 48.9 L m-2 h-1, which is 1.3 times that of the pristine thin-film composite (TFC) nanofiltration membrane (37.9 L m-2 h-1) (GP represents the PhA modified GO composite). The rejection rate of 2000 ppm MgSO4 for TFN-GP-0.2 membranes was maintained at 97.5%. The increased water flux of the TFN-GP composite membrane compared to that of the TFN nanofiltration membrane was mainly attributed to enhanced hydrophilicity and reduced thickness of the polyamide (PA) layer. Molecular dynamics (MD) simulations confirm that the diffusion rate of amine monomers is reduced by the presence of a GP complex in the IP process, which facilitates the formation of PA layer with thinner thickness. In addition, the TFN-GP-0.2 composite membrane also showed good long-term stability; after 12 h of continuous operation, the water flux only decreased by 0.1%. This study sheds new light on the development of GO-based nanofiltration for potential implementation, as well as a unique concept for manufacturing high-performance nanofiltration membranes.
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Affiliation(s)
- Ke Tang
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University Xiamen 361005 Fujian China
| | - LinSheng Zhu
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University Xiamen 361005 Fujian China
| | - Piao Lan
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University Xiamen 361005 Fujian China
| | - YunQiang Chen
- Suntar Membrane Technology (Xiamen) Co., Ltd. Xiamen 361022 Fujian China
| | - Zhou Chen
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University Xiamen 361005 Fujian China
| | - Yihong Lan
- Suntar Membrane Technology (Xiamen) Co., Ltd. Xiamen 361022 Fujian China
| | - WeiGuang Lan
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University Xiamen 361005 Fujian China
- Suntar Membrane Technology (Xiamen) Co., Ltd. Xiamen 361022 Fujian China
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10
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Yu Y, Zeng Q, Zhang H, Ao M, Yao J, Yang C, Velizarov S, Han L. Graphene Oxide/Polyethyleneimine-Modified Cation Exchange Membrane for Efficient Selective Recovery of Ammonia Nitrogen from Wastewater. MEMBRANES 2023; 13:726. [PMID: 37623787 PMCID: PMC10456636 DOI: 10.3390/membranes13080726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023]
Abstract
Competition for the migration of interfering cations limits the scale-up and implementation of the Donnan dialysis process for the recovery of ammonia nitrogen (NH4+-N) from wastewater in practice. Highly efficient selective permeation of NH4+ through a cation exchange membrane (CEM) is expected to be modulated via tuning the surface charge and structure of CEM. In this work, a novel CEM was designed to form a graphene oxide (GO)-polyethyleneimine (PEI) cross-linked layer by introducing self-assembling layers of GO and PEI on the surface of a commercial CEM, which rationally regulates the surface charge and structure of the membrane. The resulting positively charged membrane surface exhibits stronger repulsion for divalent cations compared to monovalent cations according to Coulomb's law, while, simultaneously, GO forms π-metal cation conjugates between metal cations (e.g., Mg2+ and Ca2+), thus limiting metal cation transport across the membrane. During the DD process, higher NH4+ concentrations resulted in a longer time to reach Donnan equilibrium and higher NH4+ flux, while increased Mg2+ concentrations resulted in lower NH4+ flux (from 0.414 to 0.213 mol·m-2·h-1). Using the synergistic effect of electrostatic interaction and non-covalent cross-linking, the designed membrane, referred to as GO-PEI (20) and prepared by a 20 min impregnation in the GO-PEI mixture, exhibited an NH4+ transport rate of 0.429 mol·m-2·h-1 and a Mg2+ transport rate of 0.003 mol·m-2·h-1 in single-salt solution tests and an NH4+/Mg2+ selectivity of 15.46, outperforming those of the unmodified and PEI membranes (1.30 and 5.74, respectively). In mixed salt solution tests, the GO-PEI (20) membrane showed a selectivity of 15.46 (~1.36, the unmodified membrane) for NH4+/Mg2+ and a good structural stability after 72 h of continuous operation. Therefore, this facile surface charge modulation approach provides a promising avenue for achieving efficient NH4+-selective separation by modified CEMs.
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Affiliation(s)
- Yuanyuan Yu
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Qin Zeng
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Haoquan Zhang
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Maoqin Ao
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Jingmei Yao
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Chun Yang
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
| | - Svetlozar Velizarov
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Le Han
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Y.Y.); (Q.Z.); (H.Z.); (M.A.); (J.Y.); (C.Y.)
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11
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Boulanger N, Li G, Bakhiia T, Maslakov KI, Romanchuk AY, Kalmykov SN, Talyzin AV. Super-oxidized "activated graphene" as 3D analogue of defect graphene oxide: Oxidation degree vs U(VI) sorption. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131817. [PMID: 37327606 DOI: 10.1016/j.jhazmat.2023.131817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/18/2023]
Abstract
Porous carbons are not favorable for sorption of heavy metals and radionuclides due to absence of suitable binding sites. In this study we explored the limits for surface oxidation of "activated graphene" (AG), porous carbon material with the specific surface area of ∼2700 m2/g produced by activation of reduced graphene oxide (GO). Set of "Super-Oxidized Activated Graphene" (SOAG) materials with high abundance of carboxylic groups on the surface were produced using "soft" oxidation. High degree of oxidation comparable to standard GO (C/O=2.3) was achieved while keeping 3D porous structure with specific surface area of ∼700-800 m2/. The decrease in surface area is related to the oxidation-driven collapse of mesopores while micropores showed higher stability. The increase in the oxidation degree of SOAG is found to result in progressively higher sorption of U(VI), mostly related to the increase in abundance of carboxylic groups. The SOAG demonstrated extraordinarily high sorption of U(VI) with the maximal capacity up to 5400 μmol/g, that is 8.4 - fold increase compared to non-oxidized precursor AG, ∼50 -fold increase compared to standard graphene oxide and twice higher than extremely defect-rich graphene oxide. The trends revealed here show a way to further increase sorption if similar oxidation degree is achieved with smaller sacrifice of surface area.
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Affiliation(s)
| | - Gui Li
- Department of Physics, Umeå University, S-90187 Umeå, Sweden
| | - Tamuna Bakhiia
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Konstantin I Maslakov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Anna Yu Romanchuk
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Stepan N Kalmykov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia.
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12
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Ji D, Lee Y, Nishina Y, Kamiya K, Daiyan R, Chu D, Wen X, Yoshimura M, Kumar P, Andreeva DV, Novoselov KS, Lee GH, Joshi R, Foller T. Angstrom-Confined Electrochemical Synthesis of Sub-Unit-Cell Non-Van Der Waals 2D Metal Oxides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2301506. [PMID: 37116867 DOI: 10.1002/adma.202301506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/12/2023] [Indexed: 06/19/2023]
Abstract
Bottom-up electrochemical synthesis of atomically thin materials is desirable yet challenging, especially for non-vanderWaals (non-vdW) materials. Thicknesses below a few nanometers have not been reported yet, posing the question how thin can non-vdW materials be electrochemically synthesized. This is important as materials with (sub-)unit-cell thickness often show remarkably different properties compared to their bulk form or thin films of several nanometers thickness. Here, a straightforward electrochemical method utilizing the angstrom-confinement of laminar reduced graphene oxide (rGO) nanochannels is introduced to obtain a centimeter-scale network of atomically thin (<4.3 Å) 2D-transition metal oxides (2D-TMO). The angstrom-confinement provides a thickness limitation, forcing sub-unit-cell growth of 2D-TMO with oxygen and metal vacancies. It is showcased that Cr2 O3 , a material without significant catalytic activity for the oxygen evolution reaction (OER) in bulk form, can be activated as a high-performing catalyst if synthesized in the 2D sub-unit-cell form. This method displays the high activity of sub-unit-cell form while retaining the stability of bulk form, promising to yield unexplored fundamental science and applications. It is shown that while retaining the advantages of bottom-up electrochemical synthesis, like simplicity, high yield, and mild conditions, the thickness of TMO can be limited to sub-unit-cell dimensions.
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Affiliation(s)
- Dali Ji
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Yunah Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Yuta Nishina
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Kazuhide Kamiya
- Research Center for Solar Energy Chemistry, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Rahman Daiyan
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Dewei Chu
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Xinyue Wen
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Masamichi Yoshimura
- Graduate School of Engineering, Toyota Technological Institute, Nagoya, 468-8511, Japan
| | - Priyank Kumar
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Daria V Andreeva
- Institute for Functional Intelligent Materials, National University of Singapore, Singapore, 117575, Singapore
| | - Kostya S Novoselov
- Institute for Functional Intelligent Materials, National University of Singapore, Singapore, 117575, Singapore
| | - Gwan-Hyoung Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Rakesh Joshi
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Tobias Foller
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
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13
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Xiao X, Yu Z, Zhu X, Wang J, Xiang Q. Sepiolite@TiO2/Graphene oxide composite membrane for long-term Separation of oily wastewater. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Astvatsaturov DA, Kokorin AI, Melnikov MY, Chumakova NA. Liquid-like and solid-like acetonitrile intercalated into graphite oxide as studied by the spin probe technique. Phys Chem Chem Phys 2023; 25:3136-3143. [PMID: 36621838 DOI: 10.1039/d2cp03548k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The molecular mobility of acetonitrile intercalated into the inter-plane space of graphite oxide was studied using the spin probe technique. It was revealed that two types of intercalated substance - liquid-like and solid-like - are simultaneously present in between the oxidized graphene planes, and their ratio depends on temperature. The micro-viscosity of liquid-like intercalated acetonitrile was found to be higher than that of bulk acetonitrile and depends on the amount of intercalated liquid.
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Affiliation(s)
- Dmitry A Astvatsaturov
- N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Science, Kosygin St. 4, Moscow, 119991, Russia. .,M. V. Lomonosov Moscow State University, Chemistry Department, Leninskiye Gory, 1/3, Moscow, 119991, Russia
| | - Alexander I Kokorin
- N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Science, Kosygin St. 4, Moscow, 119991, Russia. .,Plekhanov Russian University of Economics, Stremyanny per., 36, Moscow, 115093, Russia
| | - Mikhail Ya Melnikov
- M. V. Lomonosov Moscow State University, Chemistry Department, Leninskiye Gory, 1/3, Moscow, 119991, Russia
| | - Natalia A Chumakova
- N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Science, Kosygin St. 4, Moscow, 119991, Russia. .,M. V. Lomonosov Moscow State University, Chemistry Department, Leninskiye Gory, 1/3, Moscow, 119991, Russia
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15
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Kaplin AV, Rebrikova AT, Eremina EA, Chumakova NA, Avramenko NV, Korobov MV. Sorption of Polar Sorbents into GO Powders and Membranes. MEMBRANES 2023; 13:53. [PMID: 36676860 PMCID: PMC9862977 DOI: 10.3390/membranes13010053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/26/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
The comparative study of sorption of polar substances acetonitrile and water into powders and membranes (>10 μm thick) of modified Hummers (HGO) and Brodie (BGO) graphite oxides was performed using isopiestic method (IM) and differential scanning calorimetry (DSC). Additional sorption data were obtained for pyridine and 1-octanol. Sorption measurements were accompanied by conventional XRD and XPS control. Electron paramagnetic resonance (EPR) was additionally used to characterize ordering of the membranes. The impact on sorption of synthetic procedure (Brodie or Hummers), method of making membranes, chemical nature of the sorbent, and method of sorption was systematically examined. It was demonstrated that variations in synthetic procedures within both Hummers and Brodie methods did not lead to changes in the sorption properties of the corresponding powders. Sorption of acetonitrile and pyridine was reduced by approximately half when switching from powders to membranes at ambient temperature. DSC measurements at a lower temperature gave equal sorption of acetonitrile into HGO powder and membranes. Water has demonstrated unique sorption properties. Equal sorption of water was measured for HGO membranes and powders at T = 298 K and at T = 273 K. It was demonstrated that lowering the orientational alignment of the membranes led to the increase of sorption. In practice this could allow one to tune sorption/swelling and transport properties of the GO membranes directly by adjusting their internal ordering without the use of any composite materials.
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Affiliation(s)
- A. V. Kaplin
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Science, Kosygin St. 4, Moscow 119991, Russia
| | - A. T. Rebrikova
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
| | - E. A. Eremina
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
| | - N. A. Chumakova
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Science, Kosygin St. 4, Moscow 119991, Russia
| | - N. V. Avramenko
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
| | - M. V. Korobov
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskiye Gory, 1/3, Moscow 119991, Russia
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16
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Yadav S, Singh Raman AP, Meena H, Goswami AG, Bhawna, Kumar V, Jain P, Kumar G, Sagar M, Rana DK, Bahadur I, Singh P. An Update on Graphene Oxide: Applications and Toxicity. ACS OMEGA 2022; 7:35387-35445. [PMID: 36249372 PMCID: PMC9558614 DOI: 10.1021/acsomega.2c03171] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/30/2022] [Indexed: 08/24/2023]
Abstract
Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalized. Brodie synthesized the GO in 1859 by reacting graphite with KClO3 in the presence of fuming HNO3; the reaction took 3-4 days to complete at 333 K. Since then, various schemes have been developed to reduce the reaction time, increase the yield, and minimize the release of toxic byproducts (NO2 and N2O4). The modified Hummers method has been widely accepted to produce GO in bulk. Due to its versatile characteristics, GO has a wide range of applications in different fields like tissue engineering, photocatalysis, catalysis, and biomedical applications. Its porous structure is considered appropriate for tissue and organ regeneration. Various branches of tissue engineering are being extensively explored, such as bone, neural, dentistry, cartilage, and skin tissue engineering. The band gap of GO can be easily tuned, and therefore it has a wide range of photocatalytic applications as well: the degradation of organic contaminants, hydrogen generation, and CO2 reduction, etc. GO could be a potential nanocarrier in drug delivery systems, gene delivery, biological sensing, and antibacterial nanocomposites due to its large surface area and high density, as it is highly functionalized with oxygen-containing functional groups. GO or its composites are found to be toxic to various biological species and as also discussed in this review. It has been observed that superoxide dismutase (SOD) and reactive oxygen species (ROS) levels gradually increase over a period after GO is introduced in the biological systems. Hence, GO at specific concentrations is toxic for various species like earthworms, Chironomus riparius, Zebrafish, etc.
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Affiliation(s)
- Sandeep Yadav
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | | | - Harshvardhan Meena
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
- Department
of Chemistry, Sri Venkateswara College, University of Delhi, Delhi, India
- Department
of Chemistry, University of Delhi, Delhi, India
| | - Abhay Giri Goswami
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | - Bhawna
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
- Special
Centre for Nanoscience, Jawaharlal Nehru
University, Delhi, India
| | - Vinod Kumar
- Special
Centre for Nanoscience, Jawaharlal Nehru
University, Delhi, India
| | - Pallavi Jain
- Department
of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, NCR Campus, Uttar Pradesh, India
| | - Gyanendra Kumar
- Department
of Chemistry, University of Delhi, Delhi, India
- Swami Shraddhanand
College, University of Delhi, Delhi, India
| | - Mansi Sagar
- Department
of Chemistry, University of Delhi, Delhi, India
| | - Devendra Kumar Rana
- Department
of Physics, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | - Indra Bahadur
- Department
of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Prashant Singh
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
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17
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Iakunkov A, Nordenström A, Boulanger N, Hennig C, Baburin I, Talyzin AV. Temperature-dependent swelling transitions in MXene Ti 3C 2T x. NANOSCALE 2022; 14:10940-10949. [PMID: 35856786 DOI: 10.1039/d2nr03075f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Swelling is a property of hydrophilic layered materials, which enables the penetration of polar solvents into an interlayer space with expansion of the lattice. Here we report an irreversible swelling transition, which occurs in MXenes immersed in excess dimethyl sulfoxide (DMSO) upon heating at 362-370 K with an increase in the interlayer distance by 4.2 Å. The temperature dependence of MXene Ti3C2Tx swelling in several polar solvents was studied using synchrotron radiation X-ray diffraction. MXenes immersed in excess DMSO showed a step-like increase in the interlayer distance from 17.73 Å at 280 K to 22.34 Å above ∼362 K. The phase transformation corresponds to a transition from the MXene structure with one intercalated DMSO layer into a two-layer solvate phase. The transformation is irreversible and the expanded phase remains after cooling back to room temperature. A similar phase transformation was observed also for MXene immersed in a 2 : 1 H2O : DMSO solvent ratio but at a lower temperature. The structure of MXene in the mixed solvent below 328 K was affected by the interstratification of differently hydrated (H2O)/solvated (DMSO) layers. Above the temperature of the transformation, the water was expelled from MXene interlayers and the formation of a pure two-layer DMSO-MXene phase was found. No changes in the swelling state were observed for MXenes immersed in DMSO or methanol at temperatures below ambient down to 173 K. Notably, MXenes do not swell in 1-alcohols larger than ethanol at ambient temperature. Changing the interlayer distance of MXenes by simple temperature cycling can be useful in membrane applications, e.g. when a larger interlayer distance is required for the penetration of ions and molecules into membranes. Swelling is also very important in electrode materials since it allows penetration of the electrolyte ions into the interlayers of the MXene structure.
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Affiliation(s)
- Artem Iakunkov
- Department of Physics, Umeå University, Umeå, SE-901 87, Sweden.
| | | | | | - Christoph Hennig
- Institute of Resource Ecology, Helmholtz Zentrum Dresden Rossendorf, Bautzner Landstrasse 400, 01328, Dresden, Germany
- The Rossendorf Beamline, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Igor Baburin
- Theoretische Chemie, Technische Universität Dresden, 01062, Dresden, Germany
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18
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Multilayered graphene oxide membranes for bioethanol purification: Microscopic insight from molecular simulation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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The role of surface ionisation in the hydration-induced swelling of graphene oxide membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Lao J, Zhou K, Pan S, Luo J, Gao J, Dong A, Jiang L. Spontaneous and Selective Potassium Transport through a Suspended Tailor-Cut Ti 3C 2T x MXene Film. ACS NANO 2022; 16:9142-9149. [PMID: 35604126 DOI: 10.1021/acsnano.2c01304] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Biological ion pumps selectively transport target ions against the concentration gradient, a process that is crucial to maintaining the out-of-equilibrium states of cells. Building an ion pump with ion selectivity has been challenging. Here we show that a Ti3C2Tx MXene film suspended in air with a trapezoidal shape spontaneously pumps K+ ions from the base end to the tip end and exhibits a K+/Na+ selectivity of 4. Such a phenomenon is attributed to a range of properties of MXene. Thanks to the high stability of MXene in water and the dynamic equilibrium between evaporation and swelling, the film keeps a narrow interlayer spacing of ∼0.3 nm when its two ends are connected to reservoirs. Because of the polar electrical structure and hydrophilicity of the MXene nanosheet, K+ ions experience a low energy barrier of ∼4.6 kBT when entering these narrow interlayer spacings. Through quantitative simulations and consistent experimental results, we further show that the narrow spacings exhibit a higher energy barrier to Na+, resulting in K+/Na+ selectivity. Finally, we show that the spontaneous ion transport is driven by the asymmetric evaporation of the interlayer water across the film, a mechanism that is similar to pressure driven streaming current. This work shows how ion transport properties can be facilely manipulated by tuning the macroscopic shape of nanofluidic materials, which may attract interest in the interface of kirigami technologies and nanofluidics and show potential in energy and separation applications.
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Affiliation(s)
- Junchao Lao
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences, Qingdao 266101, China
| | - Ke Zhou
- Laboratory for Multiscale Mechanics and Medical Science, Department of Engineering Mechanics, SVL, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shangfa Pan
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences, Qingdao 266101, China
| | - Jiayan Luo
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jun Gao
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences, Qingdao 266101, China
- Shandong Energy Institute, Qingdao 266101, China
| | - Anping Dong
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China
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21
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Cuadros-Lugo E, Piñon-Espitia M, Martinez-Rodríguez HA, Lardizabal-Gutierrez D, Estrada-Guel I, Herrera-Ramirez JM, Carreño-Gallardo C. Turbostratic Carbon/Graphene Prepared via the Dry Ice in Flames Method and Its Purification Using Different Routes: A Comparative Study. MATERIALS (BASEL, SWITZERLAND) 2022; 15:2501. [PMID: 35407834 PMCID: PMC8999806 DOI: 10.3390/ma15072501] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/15/2022] [Accepted: 03/22/2022] [Indexed: 02/01/2023]
Abstract
Although the dry ice method used to synthesize turbostratic carbon/graphene is little known and used, it has significant advantages over others, such as the following: it is low cost, simple, and a large quantity of material can be obtained using some inorganic and highly available acids (which can be reused). Despite the above advantages, the main reason for its incipient development is the resulting presence of magnesium oxide in the final product. In the present work, three different treatments were tested to remove this remnant using some acid chemical leaching processes, including hydrochloric acid, aqua regia, and piranha solution. Based on the experimental evidence, it was determined that using aqua regia and combining the leaching process with mechanical milling was the most efficient way of removing such a remnant, the residue being only 0.9 wt.%. This value is low compared to that obtained with the other acid leaching solutions and purification processes (2.8-29.6 wt.%). A mandatory high-energy mechanical milling stage was necessary during this treatment to expose and dissolve the highly insoluble oxide without secondary chemical reactions on the turbostratic carbon. High-energy mechanical milling is an effective route to exfoliate graphite, which allows the magnesium oxide to be more susceptible to acid treatment. A yield of turbostratic carbon/graphene of 1 wt.% was obtained from the metallic Mg. The obtained surface area was 504.8 m2g-1; this high value resulting from the intense exfoliation can potentiate the use of this material for a wide variety of applications.
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Affiliation(s)
- Eduardo Cuadros-Lugo
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
| | - Manuel Piñon-Espitia
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
| | - Harby A. Martinez-Rodríguez
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
- Grupo de Propiedades Térmicas Dieléctricas de Compósitos, Universidad Nacional de Colombia Sede Manizales, Manizales 170001, Colombia
| | - Daniel Lardizabal-Gutierrez
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
| | - Ivanovich Estrada-Guel
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
| | - Jose M. Herrera-Ramirez
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
| | - Caleb Carreño-Gallardo
- Centro de Investigación en Materiales Avanzados—CIMAV, Miguel de Cervantes 120, Chihuahua 31136, Mexico; (E.C.-L.); (M.P.-E.); (H.A.M.-R.); (D.L.-G.); (I.E.-G.)
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22
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Zhang W, Xu H, Xie F, Ma X, Niu B, Chen M, Zhang H, Zhang Y, Long D. General synthesis of ultrafine metal oxide/reduced graphene oxide nanocomposites for ultrahigh-flux nanofiltration membrane. Nat Commun 2022; 13:471. [PMID: 35079004 PMCID: PMC8789770 DOI: 10.1038/s41467-022-28180-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/11/2022] [Indexed: 12/23/2022] Open
Abstract
Graphene-based membranes have great potential to revolutionize nanofiltration technology, but achieving high solute rejections at high water flux remains extremely challenging. Herein, a family of ultrafine metal oxide/reduced graphene oxide (rGO) nanocomposites are synthesized through a heterogenous nucleation and diffusion-controlled growth process for dye nanofiltration. The synthesis is based on the utilization of oxygen functional groups on GO surface as preferential active sites for heterogeneous nucleation, leading to the formation of sub-3 nm size, monodispersing as well as high-density loading of metal oxide nanoparticles. The anchored ultrafine nanoparticles could inhibit the wrinkling of the rGO nanosheet, forming highly stable colloidal solutions for the solution processing fabrication of nanofiltration membranes. By functioning as pillars, the nanoparticles remarkably increase both vertical interlayer spacing and lateral tortuous paths of the rGO membranes, offering a water permeability of 225 L m-2 h-1 bar-1 and selectivity up to 98% in the size-exclusion separation of methyl blue.
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Affiliation(s)
- Wanyu Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hai Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Fei Xie
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiaohua Ma
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Bo Niu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Mingqi Chen
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hongyu Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yayun Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Donghui Long
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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Nakanishi W, Yamauchi Y, Nishina Y, Yoshio M, Takeuchi M. Oxidation-degree-dependent moisture-induced actuation of a graphene oxide film. RSC Adv 2022; 12:3372-3379. [PMID: 35425372 PMCID: PMC8979308 DOI: 10.1039/d1ra07773b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/14/2022] [Indexed: 11/21/2022] Open
Abstract
Multilayered films prepared from graphene oxide (GO) subjected to a single oxidation process (1GO) can actuate in response to moisture, whereas those prepared from GO subjected to two oxidation processes (2GO) lose this ability. To elucidate the origin of this difference, the structures and properties of various multilayered films and their contents were analyzed. According to atomic force microscopy images, the lateral size of the GO monolayer in 2GO (2.0 ± 0.4 μm) was smaller than that in 1GO (3.2 ± 0.4 μm), although this size difference did not affect actuation. Scanning electron microscopy images of the cross sections of both films showed fine multilayered structures and X-ray diffraction measurements showed the moisture sensitive reversible change in the interlayer distances for both films. Both films adsorbed 30 wt% moisture in 60 s with different water contents at the bottom moist sides and top air sides of the films. Nanoindentation experiments showed hardness values (1GO: 156 ± 67 MPa; 2GO: 189 ± 97 MPa) and elastic modulus values (1GO: 4.7 ± 1.7 GPa; 2GO: 5.8 ± 3.2 GPa) typical of GO, with no substantial difference between the films. On the contrary, the 1GO film bent when subjected to a weight equal to its own weight, whereas the 2GO film did not. Such differences in the macroscopic hardness of GO films can affect their moisture-induced actuation ability.
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Affiliation(s)
- Waka Nakanishi
- Molecular Design and Function Group, National Institute for Materials Science 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan
| | - Yoshihiro Yamauchi
- Molecular Design and Function Group, National Institute for Materials Science 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan
| | - Yuta Nishina
- Research Core for Interdisciplinary Sciences, Okayama University 3-1-1 Tsushimanaka Okayama 700-8530 Japan
| | - Masafumi Yoshio
- Research Center for Functional Materials, National Institute for Materials Science 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University Sendai 980-8579 Japan
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24
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Chumakova NA, Vorobiev AK, Astvatsaturov D, Yankova TS, Rebrikova A, Matveev MV. Quantitative determination of the orientational ordering of the graphene oxide membranes by spin probe technique. Phys Chem Chem Phys 2022; 24:4881-4890. [DOI: 10.1039/d1cp05417a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The orientational alignment of the graphene oxide membranes was determined quantitatively using spin probe technique; the values of the orientational order parameters up to 6th rank were obtained. It was...
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25
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Chougan M, Lamastra FR, Bolli E, Caschera D, Kaciulis S, Mazzuca C, Montesperelli G, Ghaffar SH, Al-Kheetan MJ, Bianco A. Extra-Low Dosage Graphene Oxide Cementitious Nanocomposites: A Nano- to Macroscale Approach. NANOMATERIALS 2021; 11:nano11123278. [PMID: 34947625 PMCID: PMC8706347 DOI: 10.3390/nano11123278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 11/24/2022]
Abstract
The impact of extra-low dosage (0.01% by weight of cement) Graphene Oxide (GO) on the properties of fresh and hardened nanocomposites was assessed. The use of a minimum amount of 2-D nanofiller would minimize costs and sustainability issues, therefore encouraging the market uptake of nanoengineered cement-based materials. GO was characterized by X-ray Photoelectron Spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), Atomic Force Microscopy (AFM), X-ray Diffraction (XRD), and Raman spectroscopy. GO consisted of stacked sheets up to 600 nm × 800 nm wide and 2 nm thick, oxygen content 31 at%. The impact of GO on the fresh admixtures was evaluated by rheology, flowability, and workability measurements. GO-modified samples were characterized by density measurements, Scanning Electron Microscopy (SEM) analysis, and compression and bending tests. Permeability was investigated using the boiling-water saturation technique, salt ponding test, and Initial Surface Absorption Test (ISAT). At 28 days, GO-nanocomposite exhibited increased density (+14%), improved compressive and flexural strength (+29% and +13%, respectively), and decreased permeability compared to the control sample. The strengthening effect dominated over the adverse effects associated with the worsening of the fresh properties; reduced permeability was mainly attributed to the refining of the pore network induced by the presence of GO.
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Affiliation(s)
- Mehdi Chougan
- Dipartimento di Ingegneria dell’Impresa “Mario Lucertini”, Università degli Studi di Roma “Tor Vergata” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Via del Politecnico, 00133 Roma, Italy; (M.C.); (G.M.); (A.B.)
- Department of Civil and Environmental Engineering, Brunel University London, Uxbridge UB8 3PH, Middlesex, UK;
| | - Francesca Romana Lamastra
- Dipartimento di Ingegneria dell’Impresa “Mario Lucertini”, Università degli Studi di Roma “Tor Vergata” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Via del Politecnico, 00133 Roma, Italy; (M.C.); (G.M.); (A.B.)
- Correspondence: ; Tel.: +39-06-7259-4495; Fax: +39-06-7259-4328
| | - Eleonora Bolli
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche (ISMN-CNR), Via Salaria Km 29.300, Monterotondo, 00015 Roma, Italy; (E.B.); (D.C.); (S.K.)
| | - Daniela Caschera
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche (ISMN-CNR), Via Salaria Km 29.300, Monterotondo, 00015 Roma, Italy; (E.B.); (D.C.); (S.K.)
| | - Saulius Kaciulis
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche (ISMN-CNR), Via Salaria Km 29.300, Monterotondo, 00015 Roma, Italy; (E.B.); (D.C.); (S.K.)
| | - Claudia Mazzuca
- Dipartimento di Scienze e Tecnologie Chimiche, Università degli Studi di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy;
| | - Giampiero Montesperelli
- Dipartimento di Ingegneria dell’Impresa “Mario Lucertini”, Università degli Studi di Roma “Tor Vergata” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Via del Politecnico, 00133 Roma, Italy; (M.C.); (G.M.); (A.B.)
| | - Seyed Hamidreza Ghaffar
- Department of Civil and Environmental Engineering, Brunel University London, Uxbridge UB8 3PH, Middlesex, UK;
| | - Mazen J. Al-Kheetan
- Department of Civil and Environmental Engineering, College of Engineering, Mutah University, Mutah, P.O. Box 7, Karak 61710, Jordan;
| | - Alessandra Bianco
- Dipartimento di Ingegneria dell’Impresa “Mario Lucertini”, Università degli Studi di Roma “Tor Vergata” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Via del Politecnico, 00133 Roma, Italy; (M.C.); (G.M.); (A.B.)
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26
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Zhang R, Tan Q, Bao S, Deng J, Xie Y, Zheng F, Wu G, Xu B. Spray drying induced engineering a hierarchical reduced graphene oxide supported heterogeneous Tin dioxide and Zinc oxide for Lithium-ion storage. J Colloid Interface Sci 2021; 608:1758-1768. [PMID: 34743046 DOI: 10.1016/j.jcis.2021.10.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/18/2022]
Abstract
In this work, a hierarchical reduced graphene oxide (RGO) supportive matrix consisting of both larger two-dimensional RGO sheets and smaller three-dimensional RGO spheres was engineered with ZnO and SnO2 nanoparticles immobilized. The ZnO and SnO2 nanocrystals with controlled size were in sequence engineered on the surface of the RGO sheets during the deoxygenation of graphene oxide sample (GO), where the zinc-containing ZIF-8 sample and metal tin foil were used as precursors for ZnO and SnO2, respectively. After a spray drying treatment and calcination, the final ZnO@SnO2/RGO-H sample was obtained, which delivered an outstanding specific capacity of 982 mAh·g-1 under a high current density of 1000 mA·g-1 after 450 cycles. Benefitting from the unique hierarchical structure, the mechanical strength, ionic and electric conductivities of the ZnO@SnO2/RGO-H sample have been simultaneously promoted. The joint contributions from pseudocapacitive and battery behaviors in lithium-ion storage processes bring in both large specific capacity and good rate capability. The industrially mature spray drying method for synthesizing RGO based hierarchical products can be further developed for wider applications.
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Affiliation(s)
- Rui Zhang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Qingke Tan
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Shouchun Bao
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Jianbin Deng
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yan Xie
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Fei Zheng
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Guanglei Wu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Binghui Xu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibersfv and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
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27
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Li B, Bao S, Tan Q, Zhang R, Shan L, Wang C, Wu G, Xu B. Engineering tin dioxide quantum dots in a hierarchical graphite and graphene oxide framework for lithium-ion storage. J Colloid Interface Sci 2021; 600:649-659. [PMID: 34049020 DOI: 10.1016/j.jcis.2021.05.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/13/2021] [Accepted: 05/13/2021] [Indexed: 10/21/2022]
Abstract
The spontaneous aggregation and poor electronic conductivity are widely recognized as the main challenges for practically applied nano-sized tin dioxide-based anode candidates in lithium-ion batteries. This work describes a hierarchical graphite and graphene oxide (GO) framework stabilized tin dioxide quantum dot composite (SnO2@C/GO), which is synthesized by a solid-state ball-milling treatment and a water-phase self-assembly process. Characterization results demonstrate the engineered inside nanostructured graphite and outside GO layers from the SnO2@C/GO composite jointly contribute to a good immobilization effect for the SnO2 quantum dots. The hierarchical carbonaceous matrix supported SnO2 quantum dots could maintain good structure stability over a long cycling life under high current densities. As an anodic electrochemically active material for lithium-ion batteries, the SnO2@C/GO composite shows a high reversible capacity of 1156 mAh·g-1 at the current density of 1000 mA·g-1 for 350 continual cycles as well as good rate performance. The large pseudocapacitive behavior in this electrode is favorable for promoting the lithium-ion storage capability under higher current densities. The whole synthetic route is simple and effective, which probably has good potential for further development to massively fabricate high-performance electrode active materials for energy storage.
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Affiliation(s)
- Bowen Li
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Shouchun Bao
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Qingke Tan
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Rui Zhang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Liangjie Shan
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Chao Wang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Guanglei Wu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Binghui Xu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
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28
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Chen Z, Yang J, Ma C, Zhou K, Jiao S. Continuous Water Filling in a Graphene Nanochannel: A Molecular Dynamics Study. J Phys Chem B 2021; 125:9824-9833. [PMID: 34424717 DOI: 10.1021/acs.jpcb.1c05658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Low dimensional materials especially carbon materials hold high promise in the fields of water purification, mineral separation, energy harvesting/conversion, and so on. The fluidic devices fabricated by direct synthesis, lithography, or self-assembly of low dimensional materials provide opportunities for exploring the novel properties and applications of nanoconfined transport. Here, continuous filling of water and acetone molecules into a graphene nanochannel is investigated. A stairlike nonlinear dependence of the number of filling water molecules on interlayer distance d is found when d < 1 nm due to the existence of out-plane layered and in-plane ordered monolayer structure, while near-linear dependence is found for acetone because of the freely rotating configurations along with varying d during the filling process. The entropy, potential energy, and free energy of the confined system during the continuous filling are analyzed to understand the structural evolution of water. The energy-costs are discussed depending on the structure evolution of water during the filling, which is crucial to understanding the swelling and capillary condensation widely existing in the angstrom/nanometer-scale separation membranes.
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Affiliation(s)
- Zhe Chen
- Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Yanchang Road 149, Shanghai 200444, China
| | - Jianwen Yang
- Department of Physics, Shanghai Normal University, Guilin Road 100, Shanghai 200234, China
| | - Chengpeng Ma
- Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Yanchang Road 149, Shanghai 200444, China
| | - Ke Zhou
- State Key Laboratory for Strength and Vibration of Mechanical Structures, Laboratory for Multiscale Mechanics and Medical Science, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shuping Jiao
- Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Yanchang Road 149, Shanghai 200444, China
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29
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Williams CD, Siperstein FR, Carbone P. High-throughput molecular simulations reveal the origin of ion free energy barriers in graphene oxide membranes. NANOSCALE 2021; 13:13693-13702. [PMID: 34477644 DOI: 10.1039/d1nr02169a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Graphene oxide (GO) membranes are highly touted as materials for contemporary separation challenges including desalination, yet understanding of the interplay between their structure and salt rejection is limited. K+ ion permeation through hydrated GO membranes was investigated by combining structurally realistic molecular models and high-throughput molecular dynamics simulations. We show that it is essential to consider the complex GO microstructure to quantitatively reproduce experimentally-derived free energy barriers to K+ permeation for membranes with various interlayer distances less than 1.3 nm. This finding confirms the non-uniformity of GO nanopores and the necessity of the high-throughput approach for this class of material. The large barriers arise due to significant dehydration of K+ inside the membrane, which can have as few as 3 coordinated water molecules, compared to 7 in bulk solution. Thus, even if the membranes have an average pore size larger than the ion's hydrated diameter, the significant presence of pores whose size is smaller than the hydrated diameter creates bottlenecks for the permeation process.
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Affiliation(s)
- Christopher D Williams
- Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester, UK.
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30
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Zheng K, Li S, Chen Z, Chen Y, Hong Y, Lan W. Highly stable graphene oxide composite nanofiltration membrane. NANOSCALE 2021; 13:10061-10066. [PMID: 34042916 DOI: 10.1039/d1nr01823j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Graphene oxide (GO) based membranes are promising for advanced nanofiltration in water treatments but there is a need to improve water flux and membrane stability. Although the interlayer distance of GO membranes can be expanded using intercalants to improve permeability, achieving uniform intercalation without the added complication of water-induced swelling is challenging. Herein, we report the fabrication of GO hybrid lamellar membranes with controllable layer structures to achieve high performance in nanofiltration. The interlayer spacing of the GO hybrid membrane is regulated using TiO2 intercalants of different sizes, while the stability of GO membranes is enhanced by encapsulating with polyethyleneimine (PEI). The optimal composite membrane delivers a pure water-flux up to 26.0 L m-2 h-1 bar-1 with a 99.9% rejection of methylene blue and eosin under an ultra-low pressure nanofiltration condition. More importantly, the composite membrane sustains good cycling stability after 5 filtration cycles of dye, which enables the potential industrial application in realizing ultra-stable GO based membranes.
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Affiliation(s)
- Kaiqiang Zheng
- Xiamen University Center for Membrane Application and Advancement, College of Materials, Xiamen University, Xiamen 361005, Fujian, China.
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31
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Nordenström A, Boulanger N, Iakunkov A, Baburin I, Klechikov A, Vorobiev A, Talyzin AV. Intercalation of Dyes in Graphene Oxide Thin Films and Membranes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:6877-6885. [PMID: 33868545 PMCID: PMC8043058 DOI: 10.1021/acs.jpcc.1c00327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Intercalation of dyes into thin multilayered graphene oxide (GO) films was studied by neutron reflectivity and X-ray diffraction. Methylene blue (MB) penetrates the interlayer space of GO in ethanol solution and remains intercalated after the solvent evaporation, as revealed by the expansion of the interlayer lattice and change in chemical composition. The sorption of MB by thin GO films is found to be significantly stronger compared to the sorption of Crystal violet (CV) and Rose bengal (RB). This effect is attributed to the difference in the geometrical shape of planar MB and essentially nonflat CV and RB molecules. Graphite oxides and restacked GO films are found to exhibit different methylene blue (MB) sorptions. MB sorption by precursor graphite oxide and thin spin-coated films of GO is significantly stronger compared to freestanding micrometer-thick membranes prepared by vacuum filtration. Nevertheless, the sorption capacity of GO membranes is sufficient to remove a significant part of the MB from diluted solutions tested for permeation in several earlier studies. High sorption capacity results in strong modification of the GO structure, which is likely to affect permeation properties of GO membranes. Therefore, MB is not suitable for testing size exclusion effects in the permeation of GO membranes. It is not only hydration or solvation diameter but also the exact geometrical shape of molecules that needs to be taken into account considering size effects for penetration of molecules between GO layers in membrane applications.
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Affiliation(s)
| | | | - Artem Iakunkov
- Department
of Physics, Umeå University, S-90187 Umeå, Sweden
| | - Igor Baburin
- Theoretische
Chemie, Technische Universitat Dresden, Bergstraße 66b, 01062 Dresden, Germany
| | - Alexey Klechikov
- Department of
Physics and Astronomy, Uppsala University, Uppsala 751 20, Sweden
| | - Alexei Vorobiev
- Department of
Physics and Astronomy, Uppsala University, Uppsala 751 20, Sweden
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32
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Liang F, Zheng J, He M, Mao Y, Liu G, Zhao J, Jin W. Exclusive and fast water channels in zwitterionic graphene oxide membrane for efficient water–ethanol separation. AIChE J 2021. [DOI: 10.1002/aic.17215] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Feng Liang
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Jing Zheng
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Meigui He
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Yangyang Mao
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Guozhen Liu
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Jing Zhao
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
| | - Wanqin Jin
- State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing P.R. China
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