101
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Peng M, Shi D, Sun Y, Cheng J, Zhao B, Xie Y, Zhang J, Guo W, Jia Z, Liang Z, Jiang L. 3D Printed Mechanically Robust Graphene/CNT Electrodes for Highly Efficient Overall Water Splitting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1908201. [PMID: 32363703 DOI: 10.1002/adma.201908201] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
3D printing of graphene electrodes with high mechanical strength has been a growing interest in the development of advanced energy, environment, and electronic systems, yet is extremely challenging. Herein, a 3D printed bioinspired electrode of graphene reinforced with 1D carbon nanotubes (CNTs) (3DP GC) with both high flexural strength and hierarchical porous structure is reported via a 3D printing strategy. Mechanics modeling reveals the critical role of the 1D CNTs in the enhanced flexural strength by increasing the friction and adhesion between the 2D graphene nanosheets. The 3DP GC electrodes hold distinct advantages: i) an intrinsically high flexural strength that enables their large-scale applications; and ii) a hierarchical porous structure that offers large surface area and interconnected channels, endowing fast mass and/or charge and ions transport rate, which is thus beneficial for acting as an ideal catalyst carrier. The 3DP GC electrode integrated with a NiFeP nanosheets array exhibits a voltage of 1.58 V at 30 mA cm-2 as bifunctional electrode for water splitting, which is much better than most of the reported Ni-, Co-, and Fe-based bifunctional electrocatalysts. Importantly, this study paves the way for the practical applications of 3D printed graphene electrodes in many energy conversion/storage, environmental, and electronic systems where high flexural strength is preferred.
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Affiliation(s)
- Meiwen Peng
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Danli Shi
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Yinghui Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, Jiangsu, 215006, P. R. China
| | - Jian Cheng
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD, 20742, USA
| | - Bo Zhao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Yiming Xie
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Junchang Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Wei Guo
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Zheng Jia
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Zhiqiang Liang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Lin Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
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102
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Nitrogen-doped graphene oxide aerogel anchored with spinel CoFe2O4 nanoparticles for rapid degradation of tetracycline. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116690] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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103
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Flame retardant, superhydrophobic, and superoleophilic reduced graphene oxide/orthoaminophenol polyurethane sponge for efficient oil/water separation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112979] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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104
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Siavash Moakhar R, AbdelFatah T, Sanati A, Jalali M, Flynn SE, Mahshid SS, Mahshid S. A Nanostructured Gold/Graphene Microfluidic Device for Direct and Plasmonic-Assisted Impedimetric Detection of Bacteria. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23298-23310. [PMID: 32302093 DOI: 10.1021/acsami.0c02654] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hierarchical 3D gold nano-/microislands (NMIs) are favorably structured for direct and probe-free capture of bacteria in optical and electrochemical sensors. Moreover, their unique plasmonic properties make them a suitable candidate for plasmonic-assisted electrochemical sensors, yet the charge transfer needs to be improved. In the present study, we propose a novel plasmonic-assisted electrochemical impedimetric detection platform based on hybrid structures of 3D gold NMIs and graphene (Gr) nanosheets for probe-free capture and label-free detection of bacteria. The inclusion of Gr nanosheets significantly improves the charge transfer, addressing the central issue of using 3D gold NMIs. Notably, the 3D gold NMIs/Gr detection platform successfully distinguishes between various types of bacteria including Escherichia coli (E. coli) K12, Pseudomonas putida (P. putida), and Staphylococcus epidermidis (S. epidermidis) when electrochemical impedance spectroscopy is applied under visible light. We show that distinguishable and label-free impedimetric detection is due to dissimilar electron charge transfer caused by various sizes, morphologies, and compositions of the cells. In addition, the finite-difference time-domain (FDTD) simulation of the electric field indicates the intensity of charge distribution at the edge of the NMI structures. Furthermore, the wettability studies demonstrated that contact angle is a characteristic feature of each type of captured bacteria on the 3D gold NMIs, which strongly depends on the shape, morphology, and size of the cells. Ultimately, exposing the platform to various dilutions of the three bacteria strains revealed the ability to detect dilutions as low as ∼20 CFU/mL in a wide linear range of detection of 2 × 101-105, 2 × 101-104, and 1 × 102-1 × 105 CFU/mL for E. coli, P. putida, and S. epidermidis, respectively. The proposed hybrid structure of 3D gold NMIs and Gr, combined by novel plasmonic and conventional impedance spectroscopy techniques, opens interesting avenues in ultrasensitive label-free detection of bacteria with low cost and high stability.
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Affiliation(s)
| | - Tamer AbdelFatah
- Department of Bioengineering, McGill University, Montreal, Quebec H3A 0E9, Canada
| | - Alireza Sanati
- Department of Bioengineering, McGill University, Montreal, Quebec H3A 0E9, Canada
| | - Mahsa Jalali
- Department of Bioengineering, McGill University, Montreal, Quebec H3A 0E9, Canada
| | | | - Sahar Sadat Mahshid
- Biological Sciences, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario M4N 3M5, Canada
| | - Sara Mahshid
- Department of Bioengineering, McGill University, Montreal, Quebec H3A 0E9, Canada
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105
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Yap PL, Tung TT, Kabiri S, Matulick N, Tran DN, Losic D. Polyamine-modified reduced graphene oxide: A new and cost-effective adsorbent for efficient removal of mercury in waters. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116441] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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106
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Ploetz E, Zimpel A, Cauda V, Bauer D, Lamb DC, Haisch C, Zahler S, Vollmar AM, Wuttke S, Engelke H. Metal-Organic Framework Nanoparticles Induce Pyroptosis in Cells Controlled by the Extracellular pH. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907267. [PMID: 32182391 DOI: 10.1002/adfm.201909062] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 05/23/2023]
Abstract
Ion homeostasis is essential for cellular survival, and elevated concentrations of specific ions are used to start distinct forms of programmed cell death. However, investigating the influence of certain ions on cells in a controlled way has been hampered due to the tight regulation of ion import by cells. Here, it is shown that lipid-coated iron-based metal-organic framework nanoparticles are able to deliver and release high amounts of iron ions into cells. While high concentrations of iron often trigger ferroptosis, here, the released iron induces pyroptosis, a form of cell death involving the immune system. The iron release occurs only in slightly acidic extracellular environments restricting cell death to cells in acidic microenvironments and allowing for external control. The release mechanism is based on endocytosis facilitated by the lipid-coating followed by degradation of the nanoparticle in the lysosome via cysteine-mediated reduction, which is enhanced in slightly acidic extracellular environment. Thus, a new functionality of hybrid nanoparticles is demonstrated, which uses their nanoarchitecture to facilitate controlled ion delivery into cells. Based on the selectivity for acidic microenvironments, the described nanoparticles may also be used for immunotherapy: the nanoparticles may directly affect the primary tumor and the induced pyroptosis activates the immune system.
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Affiliation(s)
- Evelyn Ploetz
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | - Andreas Zimpel
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, Torino, 10129, Italy
| | - David Bauer
- Department of Chemistry, TU Munich, Munich, 81377, Germany
| | - Don C Lamb
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | | | - Stefan Zahler
- Department of Pharmacy, LMU Munich, Munich, 81377, Germany
| | | | - Stefan Wuttke
- BCMaterials, Basque Center for Materials, UPV/EHU Science Park, Leioa, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
| | - Hanna Engelke
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
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107
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Majooni Y, Mortaheb HR, Khodadadi Dizaji A. Enhancement in pervaporative performance of PDMS membrane for separation of styrene from wastewater by hybridizing with reduced graphene oxide. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 261:110189. [PMID: 32148265 DOI: 10.1016/j.jenvman.2020.110189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/28/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
The removal of styrene from wastewater by pervaporation was investigated by using composite PDMS membranes filled with reduced graphene oxide on PES support layers. Graphene oxide was synthesized through modified Hummers' method and then chemically reduced. The filler was characterized by TEM, SEM, XRD, and AFM. The top layers with different PDMS molecular weights were cast on the PES supports, which were prepared by phase inversion method. The characterizations of prepared membranes were investigated by SEM, AFM, contact angle measurement, TGA, and DSC. It was observed that presence of the filler in the polymeric matrix controls the swelling of the membrane and enhances its solubility parameter in favor of styrene. Moreover, it significantly improves the thermal stability of the membranes. The mechanism of separation in the process was found to be affected mainly by enhancing in the membrane's solubility rather than in its diffusivity. The pervaporative performance of prepared membranes showed their great affinity toward styrene so that the separation factor of the optimum membrane (M2/S) was increased about 250% (600.4 in comparison to 241.4 for the unfilled membrane) while its total flux was decreased from 772.5 g m-2.h-1for the unfilled membrane to 321.9 g m-2.h-1. Increasing the molecular weight of PDMS lowered the optimal rGO content due to the complexity of the diffusion path and occupation of free volume by longer polymer chains. Accordingly, a lower total flux (124.7 g m-2.h-1 for high MW compared to 718.0 g m-2.h-1 for low MW) and higher separation factor (822.5 for high MW compared to 230.8 for low MW) were yielded for the same filler content (0.1 wt% rGO).
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Affiliation(s)
- Y Majooni
- Chemistry and Chemical Engineering Research Center of Iran, Tehran, P.O. Box: 14335-186, Iran
| | - H R Mortaheb
- Chemistry and Chemical Engineering Research Center of Iran, Tehran, P.O. Box: 14335-186, Iran.
| | - A Khodadadi Dizaji
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul, 34450, Turkey
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108
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Fraga TJM, Ghislandi MG, Carvalho MN, da Motta Sobrinho MA. One step forward: How can functionalization enhance the adsorptive properties of graphene towards metallic ions and dyes? ENVIRONMENTAL RESEARCH 2020; 184:109362. [PMID: 32199322 DOI: 10.1016/j.envres.2020.109362] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/23/2020] [Accepted: 03/08/2020] [Indexed: 06/10/2023]
Abstract
Functionalized graphene and its derivatives have been subject of many recent studies investigating their use as scavenger of various industrial pollutants. Adsorption is a feasible treatment, which can employ a wide variety of materials as adsorbents. Additionally, graphene has been distinguished for its remarkable properties, such as mechanical resistance, flexibility and electric conductivity. A relevant aspect of functionalized graphene is related to its selectivity, resulting in increased removal rates of specific pollutants. Hence, the functionalization process of graphene nanosheets is the cutting edge of the materials and environmental sciences, promoting the development of innovative and highly capable sorbents. The purpose of this review is to assemble the available information about functionalized graphene nanomaterials used for the removal of water pollutants and to explore its wide potential. In addition, various optimal experimental conditions (solution pH, equilibrium time, adsorbent dosage) are discussed. In each topic, aspects of environmental protection of adsorption process were evaluated, as well as the most recent works, available from high impact journals in the field, have been explored. Additionally, the employment of natural compounds to functionalize, reduce and support graphene, was evaluated as green alternatives to chemicals.
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Affiliation(s)
- Tiago José Marques Fraga
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, 50670-901, Recife, PE, Brazil.
| | - Marcos Gomes Ghislandi
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, 50670-901, Recife, PE, Brazil; Engineering Campus - UACSA, Federal Rural University of Pernambuco (UFRPE), 300 Cento e sessenta e Três Av., Cabo de Santo Agostinho, PE, Brazil.
| | - Marilda Nascimento Carvalho
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, 50670-901, Recife, PE, Brazil.
| | - Maurício Alves da Motta Sobrinho
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, 50670-901, Recife, PE, Brazil.
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109
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Shao G, Hanaor DAH, Shen X, Gurlo A. Freeze Casting: From Low-Dimensional Building Blocks to Aligned Porous Structures-A Review of Novel Materials, Methods, and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907176. [PMID: 32163660 DOI: 10.1002/adma.201907176] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/30/2019] [Indexed: 05/19/2023]
Abstract
Freeze casting, also known as ice templating, is a particularly versatile technique that has been applied extensively for the fabrication of well-controlled biomimetic porous materials based on ceramics, metals, polymers, biomacromolecules, and carbon nanomaterials, endowing them with novel properties and broadening their applicability. The principles of different directional freeze-casting processes are described and the relationships between processing and structure are examined. Recent progress in freeze-casting assisted assembly of low dimensional building blocks, including graphene and carbon nanotubes, into tailored micro- and macrostructures is then summarized. Emerging trends relating to novel materials as building blocks and novel freeze-cast geometries-beads, fibers, films, complex macrostructures, and nacre-mimetic composites-are presented. Thereafter, the means by which aligned porous structures and nacre mimetic materials obtainable through recently developed freeze-casting techniques and low-dimensional building blocks can facilitate material functionality across multiple fields of application, including energy storage and conversion, environmental remediation, thermal management, and smart materials, are discussed.
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Affiliation(s)
- Gaofeng Shao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
| | - Dorian A H Hanaor
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Aleksander Gurlo
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
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110
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Yang Y. A mini-review: emerging all-solid-state energy storage electrode materials for flexible devices. NANOSCALE 2020; 12:3560-3573. [PMID: 32002531 DOI: 10.1039/c9nr08722b] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
New technologies for future electronics such as personal healthcare devices and foldable smartphones require emerging developments in flexible energy storage devices as power sources. Besides the energy and power densities of energy devices, more attention should be paid to safety, reliability, and compatibility within highly integrated systems because they are almost in 24-hour real-time operation close to the human body. Thereupon, all-solid-state energy devices become the most promising candidates to meet these requirements. In this mini-review, the most recent research progress in all-solid-state flexible supercapacitors and batteries will be covered. The main focus of this mini-review is to summarize new materials development for all-solid-state flexible energy devices. The potential issues and perspectives regarding all-solid-state flexible energy device technologies will be highlighted.
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Affiliation(s)
- Yang Yang
- NanoScience Technology Center, Department of Materials Science and Engineering, Energy Conversion and Propulsion Cluster, University of Central Florida, 12424 Research Parkway Suite 423, Orlando, Florida 32826, USA.
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111
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Xiang H, Feng W, Chen Y. Single-Atom Catalysts in Catalytic Biomedicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905994. [PMID: 31930751 DOI: 10.1002/adma.201905994] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/07/2019] [Indexed: 05/23/2023]
Abstract
The intrinsic deficiencies of nanoparticle-initiated catalysis for biomedical applications promote the fast development of alternative versatile theranostic modalities. The catalytic performance and selectivity are the critical issues that are challenging to be augmented and optimized in biological conditions. Single-atom catalysts (SACs) featuring atomically dispersed single metal atoms have emerged as one of the most explored catalysts in biomedicine recently due to their preeminent catalytic activity and superior selectivity distinct from their nanosized counterparts. Herein, an overview of the pivotal significance of SACs and some underlying critical issues that need to be addressed is provided, with a specific focus on their versatile biomedical applications. Their fabrication strategies, surface engineering, and structural characterizations are discussed briefly. In particular, the catalytic performance of SACs in triggering some representative catalytic reactions for providing the fundamentals of biomedical use is discussed. A sequence of representative paradigms is summarized on the successful construction of SACs for varied biomedical applications (e.g., cancer treatment, wound disinfection, biosensing, and oxidative-stress cytoprotection) with an emphasis on uncovering the intrinsic catalytic mechanisms and understanding the underlying structure-performance relationships. Finally, opportunities and challenges faced in the future development of SACs-triggered catalysis for biomedical use are discussed and outlooked.
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Affiliation(s)
- Huijing Xiang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Wei Feng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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112
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Kröner A, Hirsch T. Current Trends in the Optical Characterization of Two-Dimensional Carbon Nanomaterials. Front Chem 2020; 7:927. [PMID: 32047734 PMCID: PMC6997542 DOI: 10.3389/fchem.2019.00927] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/18/2019] [Indexed: 11/13/2022] Open
Abstract
Graphene and graphene-related materials have received great attention because of their outstanding properties like Young's modulus, chemical inertness, high electrical and thermal conductivity, or large mobility. To utilize two-dimensional (2D) materials in any practical application, an excellent characterization of the nanomaterials is needed as such dimensions, even small variations in size, or composition, are accompanied by drastic changes in the material properties. Simultaneously, it is sophisticated to perform characterizations at such small dimensions. This review highlights the wide range of different characterization methods for the 2D materials, mainly attributing carbon-based materials as they are by far the ones most often used today. The strengths as well as the limitations of the individual methods, ranging from light microscopy, scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy, scanning tunneling microscopy (conductive), atomic force microscopy, scanning electrochemical microscopy, Raman spectroscopy, UV-vis, X-ray photoelectron spectroscopy, X-ray fluorescence spectroscopy, energy-dispersive X-ray spectroscopy, Auger electron spectroscopy, electron energy loss spectroscopy, X-ray diffraction, inductively coupled plasma atomic emission spectroscopy to dynamic light scattering, are discussed. By using these methods, the flake size and shape, the number of layers, the conductivity, the morphology, the number and type of defects, the chemical composition, and the colloidal properties of the 2D materials can be investigated.
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Affiliation(s)
| | - Thomas Hirsch
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
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113
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Xu X, Guan C, Xu L, Tan YH, Zhang D, Wang Y, Zhang H, Blackwood DJ, Wang J, Li M, Ding J. Three Dimensionally Free-Formable Graphene Foam with Designed Structures for Energy and Environmental Applications. ACS NANO 2020; 14:937-947. [PMID: 31891478 DOI: 10.1021/acsnano.9b08191] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three-dimensional assemblies of graphene have been considered as promising starting materials for many engineering, energy, and environmental applications due to its desirable mechanical properties, high specific area, and superior thermal and electrical transfer ability. However, little has been done to introduce designed shapes into scalable graphene assemblies. In this work, we show here a combination of conventional graphene growing technique-chemical vapor deposition with additive manufacturing. Such synthesis collaboration enables a hierarchically constructed porous 3D graphene foam with large surface area (994.2 m2/g), excellent conductivity (2.39 S/cm), reliable mechanical properties (E = 239.7 kPa), and tunable surface chemistry that can be used as a strain sensor, catalyst support, and solar steam generator.
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Affiliation(s)
- Xi Xu
- Institute of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics , Northwestern Polytechnical University , Xi'an 710072 , China
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Cao Guan
- Institute of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics , Northwestern Polytechnical University , Xi'an 710072 , China
| | - Le Xu
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Yong Hao Tan
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
- NUS Graduate School for Integrative Sciences and Engineering , National University of Singapore , Singapore 119260 , Singapore
| | - Danwei Zhang
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Yanqing Wang
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Hong Zhang
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Daniel John Blackwood
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - John Wang
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Meng Li
- MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, CQU-NUS Renewable Energy Materials & Devices Joint Laboratory, School of Energy & Power Engineering , Chongqing University , Chongqing 400044 , China
| | - Jun Ding
- Department of Materials Science and Engineering, Faculty of Engineering , National University of Singapore , Singapore 117575 , Singapore
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114
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Sollami Delekta S, Laurila MM, Mäntysalo M, Li J. Drying-Mediated Self-Assembly of Graphene for Inkjet Printing of High-Rate Micro-supercapacitors. NANO-MICRO LETTERS 2020; 12:40. [PMID: 34138275 PMCID: PMC7770958 DOI: 10.1007/s40820-020-0368-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/16/2019] [Indexed: 05/03/2023]
Abstract
Scalable fabrication of high-rate micro-supercapacitors (MSCs) is highly desired for on-chip integration of energy storage components. By virtue of the special self-assembly behavior of 2D materials during drying thin films of their liquid dispersion, a new inkjet printing technique of passivated graphene micro-flakes is developed to directly print MSCs with 3D networked porous microstructure. The presence of macroscale through-thickness pores provides fast ion transport pathways and improves the rate capability of the devices even with solid-state electrolytes. During multiple-pass printing, the porous microstructure effectively absorbs the successively printed inks, allowing full printing of 3D structured MSCs comprising multiple vertically stacked cycles of current collectors, electrodes, and sold-state electrolytes. The all-solid-state heterogeneous 3D MSCs exhibit excellent vertical scalability and high areal energy density and power density, evidently outperforming the MSCs fabricated through general printing techniques.
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Affiliation(s)
- Szymon Sollami Delekta
- School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Electrum 229, 16440, Kista, Sweden
| | - Mika-Matti Laurila
- Laboratory for Future Electronics, Faculty of Information Technology and Communication Sciences, Tampere University, 33720, Tampere, Finland
| | - Matti Mäntysalo
- Laboratory for Future Electronics, Faculty of Information Technology and Communication Sciences, Tampere University, 33720, Tampere, Finland.
| | - Jiantong Li
- School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Electrum 229, 16440, Kista, Sweden.
- Laboratory for Future Electronics, Faculty of Information Technology and Communication Sciences, Tampere University, 33720, Tampere, Finland.
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115
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Lei Y, Yan Y, Lv J. Atomistic study of the strengthening mechanisms of graphene coated aluminum. NANOTECHNOLOGY 2020; 31:055708. [PMID: 31569087 DOI: 10.1088/1361-6528/ab4952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We have investigated the nano-indentation responses of graphene/aluminum systems via computational nano-indentation processes by using molecular dynamics simulations. The effects of system temperature, grain-orientation and bilayer graphene are also investigated. We demonstrate that, the graphene coating enlarges the load-carrying area by about 5.36 times and changes the deformation behaviors of aluminum substrate during nano-indentation processes. The load bearing capacity of graphene/Al system is significantly improved by about 4.7 times compared with that of bare Al system. It is revealed that higher system temperature weakens the ultimate indentation depth and corresponding load. The grain orientation of aluminum substrate hardly affect the indentation mechanical properties of graphene/Al system. The strengthening effect of bilayer graphene is about 1.5 times that of monolayer graphene.
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Affiliation(s)
- Yinxiang Lei
- School of Computer Science, Jiangxi University of Tradtional Chinese Medicine, Nanchang 330004, People's Republic of China
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116
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Chen X, Feng Z, Gohil J, Stafford CM, Dai N, Huang L, Lin H. Reduced Holey Graphene Oxide Membranes for Desalination with Improved Water Permeance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1387-1394. [PMID: 31834774 DOI: 10.1021/acsami.9b19255] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Reduced graphene oxide (r-GO) membranes with narrow channels exhibit salt rejections comparable to conventional nanofiltration (NF) membranes. However, their water permeances are much lower because of the high tortuosity for water permeation. Herein, we report a facile solution-processable approach to create in-plane nanopores on GO nanosheets before reduction, dramatically decreasing the tortuosity and increasing water permeance while retaining the salt rejection. Specifically, holey GO (HGO) nanosheets were prepared via chemical etching using hydrogen peroxide followed by the deposition on a porous support by vacuum filtration and then reduction via exposure to hydriodic acid solutions to generate the reduced HGO (r-HGO) membrane. The generation of nanopores increases the water permeance from 0.4 L m-2 h-1 bar-1 (LMH/bar) to 6.6 LMH/bar with Na2SO4 rejection greater than 98.5%, and the membranes were robust under strong cross-flow shearing force for 36 h. Both water permeance and Na2SO4 rejection of these r-HGO membranes for the first time simultaneously reach the level of the commercial polyamide-based NF membranes. Given their good antibacterial properties and resistance to aggressive chemical washing, the r-HGO membranes show promise as next-generation NF membranes for desalination.
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Affiliation(s)
| | | | | | - Christopher M Stafford
- Materials Science & Engineering Division , National Institute of Standards and Technology , MS 8542, 100 Bureau Drive , Gaithersburg , Maryland 20899 , United States
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117
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Shao G, Ovsianytskyi O, Bekheet MF, Gurlo A. On-chip assembly of 3D graphene-based aerogels for chemiresistive gas sensing. Chem Commun (Camb) 2020; 56:450-453. [PMID: 31825397 DOI: 10.1039/c9cc09092d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Integration of the material preparation step into the device fabrication process is of prime importance for the development of high performance devices. This study presents an innovative strategy for the in situ assembly of graphene-based aerogels on a chip by polymerization-reduction and annealing processes, which are applied as chemiresistive gas sensors for the detection of NO2.
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Affiliation(s)
- Gaofeng Shao
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623, Berlin, Germany.
| | - Oleksandr Ovsianytskyi
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623, Berlin, Germany.
| | - Maged F Bekheet
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623, Berlin, Germany.
| | - Aleksander Gurlo
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623, Berlin, Germany.
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118
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Zhang Z, Huang L, Wang Y, Yang K, Du Y, Wang Y, Kipper MJ, Belfiore LA, Tang J. Theory and simulation developments of confined mass transport through graphene-based separation membranes. Phys Chem Chem Phys 2020; 22:6032-6057. [DOI: 10.1039/c9cp05551g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The perspectives of graphene-based membranes based on confined mass transport from simulations and experiments for water desalination.
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Affiliation(s)
- Zhijie Zhang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Linjun Huang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yanxin Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Kun Yang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yingchen Du
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yao Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Laurence A. Belfiore
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Jianguo Tang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
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119
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Xia D, Huang P, Li H, Rubio Carrero N. Fast and efficient electrical–thermal responses of functional nanoparticle decorated nanocarbon aerogels. Chem Commun (Camb) 2020; 56:14393-14396. [DOI: 10.1039/d0cc03784b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report multifunctional nanoparticle/nanocarbon hybrid aerogels for effective and energy-efficient regeneration of exhausted functional nanoparticles.
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Affiliation(s)
- Dong Xia
- School of Chemistry
- University of Leeds
- Leeds
- UK
| | - Peng Huang
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Heng Li
- Key Laboratory of Estuarine Ecological Security and Environmental Health
- Tan Kah Kee College
- Xiamen University
- Zhangzhou
- China
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120
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Abstract
The exploration of green and clean energy could solve the increasingly serious problems of environmental pollution and energy crisis on the Earth. Moist air is ubiquitous around the world, which particulalrly has huge chemical potential energy because of the gaseous state of the water molecules. Recently, our group demonstrated direct electricity generation by the interactions between moisture and various functional materials, which opened a window for the utilization of moisture power. This has led to an upsurge in studies on moist-electric generation (MEG). In this minireview, we provide a brief and systematic discussion on MEG from its working mechanism to practical applications and, the recent progress in advanced materials. The current challenges and the potential trends in MEG are also outlined to guide the design and synthesis of high-performance MEG devices in the future.
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Affiliation(s)
- Jiaxin Bai
- Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, PR China.
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121
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Khan S, Achazhiyath Edathil A, Banat F. Sustainable synthesis of graphene-based adsorbent using date syrup. Sci Rep 2019; 9:18106. [PMID: 31792308 PMCID: PMC6889283 DOI: 10.1038/s41598-019-54597-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 11/13/2019] [Indexed: 12/21/2022] Open
Abstract
Here we demonstrate, a facile in-situ strategy for the synthesis of environmentally benign and scalable graphene sand hybrid using date syrup as a sustainable carbon source through pyrolysis at 750 °C. Raman and SEM images revealed that the as-prepared date syrup-based graphene sand hybrid (D-GSH) had imperfections with macroporous 2-D graphene sheet-like structures stacked on the inorganic sand support. The applicability of the D-GSH for decontaminating the water from cationic (Methyl Violet, MV) and anionic (Congo Red, CR) dye and heavy metals (Pb2+ and Cd2+) was tested. Batch experiments demonstrated that D-GSH showcased exceptional capability for both dye and heavy metals removal with fast adsorption following pseudo-second-order kinetics. The adsorption capacities for MV, Pb2+, and Cd2+ were respectively 2564, 781 and 793 mg/g at 25 °C, the highest capacity graphene-based adsorbent reported in the literature to date. In addition, D-GSH also exhibited high adsorption capacity for anionic dye, CR (333 mg g-1) and good recyclability (3 cycles) for all the contaminants. The thermodynamic studies further confirmed that the adsorption of all contaminants was thermodynamically feasible, spontaneous and endothermic with ∆H° of 48.38, 89.10, 16.89 and 14.73 kJ/mol for MV, CR, Pb2+ and Cd2+, respectively. Thus, utilization of a simple one-step strategy to produce graphenic sand hybrid using date syrup helped in developing a cost-effective and environmentally friendly dye and heavy metal scavenger that can be used as a one-step solution for water decontamination.
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Affiliation(s)
- Shaihroz Khan
- Department of Chemical Engineering, Khalifa University - SAN Campus, PO Box: 127788, Abu Dhabi, United Arab Emirates
| | - Anjali Achazhiyath Edathil
- Department of Chemical Engineering, Khalifa University - SAN Campus, PO Box: 127788, Abu Dhabi, United Arab Emirates.
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University - SAN Campus, PO Box: 127788, Abu Dhabi, United Arab Emirates.
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122
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Li ZK, Liu Y, Li L, Wei Y, Caro J, Wang H. Ultra-thin titanium carbide (MXene) sheet membranes for high-efficient oil/water emulsions separation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117361] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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123
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Wei Z, Ding B, Dou H, Gascon J, Kong XJ, Xiong Y, Cai B, Zhang R, Zhou Y, Long M, Miao J, Dou Y, Yuan D, Ma J. 2020 roadmap on pore materials for energy and environmental applications. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.11.022] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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124
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Xu E, Wu Z, Ding T, Ye X, Jin Z, Liu D. Magnetic (Zn-St) 10Fe 0n ( n = 1, 2, 3, 4) Framework of Macro-Mesoporous Biomaterial Prepared via Green Enzymatic Reactive Extrusion for Dye Pollutants Removal. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43553-43562. [PMID: 31644868 DOI: 10.1021/acsami.9b14750] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biobased materials have the potential to be developed into green multifunctional products to replace their chemosynthetic counterparts, which have environmental and economic concerns. However, designing magnetic and porous biomaterials without pore spaces being occupied by exogenous magnets via traditional encapsulation, load, and/or deposition methods remains challenging. This paper describes a novel, facile, top-down strategy of fabricating zerovalent iron particles (Fe0 Ps) embedded into a three-dimensional (3D) zinc-modified starch (Zn-St) framework using the enzymatic reactive extrusion (eREX) method. Raw St underwent Zn-atom fortification, in situ Fe-atom deposition, and micromixing extrusion to produce (Zn-St)10Fe0n (n = 1, 2, 3, 4) extrudates (Es) in a continuous and large-scale mode. A hierarchical porous structure was formed during eREX processing, with mesopores (∼2-4 nm) and macropores (∼50-300 nm and ∼5-100 μm) generated regularly. The (Zn-St)10Fe0n Es were excellent at dye adsorption and magnetic separation, with high levels of St (>70%) as a biodegradable resource. For instance, (Zn-St)10Fe02 Es (St > 83%) removed 61.03 mg/g of methylene blue (∼19 times higher than that of raw St) at 298 K and pH 4.0 via simultaneous physisorption and degradation and were successfully separated due to their saturation magnetization (Ms) value of 25.41 emu/g. The dye adsorption rate and Ms of the (Zn-St)10Fe0n Es can be increased by manipulating the amount of Fe0 Ps. Thus, the novel 3D (Zn-St)10Fe0n Es are promising biomaterials for water purification applications, as well as other food, biological, and environmental fields.
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Affiliation(s)
- Enbo Xu
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking , Qilu University of Technology, Shandong Academy of Sciences , Jinan 250353 , China
| | - Tian Ding
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Zhengyu Jin
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Joint International Research Laboratory on Food Safety , Jiangnan University , Wuxi 214122 , China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
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125
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Zhang F, Li YH, Li JY, Tang ZR, Xu YJ. 3D graphene-based gel photocatalysts for environmental pollutants degradation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 253:365-376. [PMID: 31325881 DOI: 10.1016/j.envpol.2019.06.089] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/20/2019] [Accepted: 06/22/2019] [Indexed: 05/23/2023]
Abstract
Enormous research interest is devoted to fabricating three-dimensional graphene-based gels (3D GBGs) toward improved conversion of solar energy by virtue of the intrinsic properties of single graphene and 3D porous structure characteristics. Here, this concise minireview is primarily focused on the recent progress on applications of 3D GBGs, including aerogels and hydrogels, in photocatalytic degradation of pollutants from water and air, such as organic pollutants, heavy metal ions, bacteria and gaseous pollutants. In particular, the preponderances of 3D GBG photocatalysts for environmental pollutants degradation have been elaborated. Furthermore, in addition to discussing opportunities offered by 3D GBG composite photocatalysts, we also describe the existing problems and the future direction of 3D GBG materials in this burgeoning research area. It is hoped that this review could spur multidisciplinary research interest for advancing the rational utilization of 3D GBGs for practical applications in environmental remediation.
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Affiliation(s)
- Fan Zhang
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China
| | - Yue-Hua Li
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Jing-Yu Li
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Zi-Rong Tang
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China.
| | - Yi-Jun Xu
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
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126
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Xiao Y, Su Y, Liu X, Xu W. Defect-Driven Heterogeneous Electron Transfer between an Individual Graphene Sheet and Electrode. J Phys Chem Lett 2019; 10:5402-5407. [PMID: 31460765 DOI: 10.1021/acs.jpclett.9b02134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Understanding the heterogeneous electron-transfer (ET) kinetics on graphene is essential for its extensive applications. Here, on the basis of the redox-induced fluorescence variation of monolayer graphene itself, the heterogeneous ET kinetics at the interface between the electrode and the monolayer graphene was studied label-freely at the single-sheet level. By tuning the defect density on graphene, an optimal heterogeneous ET rate was observed at a moderate defect density, indicating defect-driven ET kinetics. The heterogeneities of both the intrasheet and intersheet ET kinetics were revealed at the single-sheet level. With the optimal defective graphene sheets as a sensing material for oxygen gas, a cost-effective electrochemical oxygen sensor was obtained with high sensitivity, fast response/recovery, and remarkable durability. The results obtained here deepen our understanding of the electrochemical properties of graphene and imply that rational defect control can enhance the ET process between the electrode and graphene and then improve the performance of graphene-based functional materials or devices.
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Affiliation(s)
- Yi Xiao
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
| | - Yi Su
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
| | - Xiaodong Liu
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
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127
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Zhang Y, Yin X, Yu B, Wang X, Guo Q, Yang J. Recyclable Polydopamine-Functionalized Sponge for High-Efficiency Clean Water Generation with Dual-Purpose Solar Evaporation and Contaminant Adsorption. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32559-32568. [PMID: 31411027 DOI: 10.1021/acsami.9b10076] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Solar desalination of seawater is an attractive and environmentally friendly method to solve the long-standing water crisis. However, its efficiency is highly reliant on solar intensity. Additionally, increasing contamination in water makes it difficult to generate clean water through the solo desalination process. To address this, we propose a polydopamine (PDA)-functionalized hybrid material with dual-purpose solar evaporation and contaminant adsorption for highly efficient clean water production in all-weather conditions. The hybrid material is fabricated by polymerization of dopamine onto a commercial sponge in a facile, low-cost, and scalable manner. With excellent light absorption and chelation capabilities, the PDA film coated on sponge acts as both a photothermal material and adsorbent that allow us to achieve clean water production with solar desalination when sunshine and with contaminant adsorption when cloudy or at night. Meanwhile, the solar evaporation and contaminant adsorption of the PDA-sponge are synergized with one another, resulting in the PDA-sponge that is a desirable material with the capability of continuous clean water production in all-weather conditions. The PDA-sponge is also highly recyclable with a high retention rate of evaporation and adsorption efficiency even after 10 cycles. The promising PDA-based hybrid is believed to inspire new strategies for superior water treatment materials.
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Affiliation(s)
- Yue Zhang
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000 , China
- Department of Mechanical and Materials Engineering , Western University , London , Ontario N6A 5B9 , Canada
| | - Xiangyu Yin
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000 , China
- Department of Mechanical and Materials Engineering , Western University , London , Ontario N6A 5B9 , Canada
| | - Bo Yu
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Xiaolong Wang
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Qiuquan Guo
- Department of Mechanical and Materials Engineering , Western University , London , Ontario N6A 5B9 , Canada
| | - Jun Yang
- Department of Mechanical and Materials Engineering , Western University , London , Ontario N6A 5B9 , Canada
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128
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Donskyi IS, Azab W, Cuellar-Camacho JL, Guday G, Lippitz A, Unger WES, Osterrieder K, Adeli M, Haag R. Functionalized nanographene sheets with high antiviral activity through synergistic electrostatic and hydrophobic interactions. NANOSCALE 2019; 11:15804-15809. [PMID: 31433428 DOI: 10.1039/c9nr05273a] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
As resistance to traditional drugs emerges for treatment of virus infections, the need for new methods for virus inhibition increases. Graphene derivatives with large surface areas have shown strong activity against different viruses. However, the inability of current synthetic protocols to accurately manipulate the structure of graphene sheets in order to control their antiviral activity remains a major challenge. In this work, a series of graphene derivatives with defined polyglycerol sulfate and fatty amine functionalities have been synthesized and their interactions with herpes simplex virus type 1 (HSV-1) are investigated. While electrostatic interactions between polyglycerol sulfate and virus particles trigger the binding of graphene to virus, alkyl chains induce a high antiviral activity by secondary hydrophobic interactions. Among graphene sheets with a broad range of alkyl chains, (C3-C18), the C12-functionalized sheets showed the highest antiviral activity, indicating the optimum synergistic effect between electrostatic and hydrophobic interactions, but this derivative was toxic against the Vero cell line. In contrast, sheets functionalized with C6- and C9-alkyl chains showed low toxicity against Vero cells and a synergistic inhibition of HSV-1. This study shows that antiviral agents against HSV-1 can be obtained by controlled and stepwise functionalization of graphene sheets and may be developed into antiviral agents for future biomedical applications.
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Affiliation(s)
- Ievgen S Donskyi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
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129
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Jiang Y, Chowdhury S, Balasubramanian R. Nitrogen and sulfur codoped graphene aerogels as absorbents and visible light-active photocatalysts for environmental remediation applications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:344-353. [PMID: 31091498 DOI: 10.1016/j.envpol.2019.04.132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/28/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
Graphene aerogels (GAs) are increasingly being recognized as high performance multifunctional materials to tackle our current and emerging environmental concerns. In order to extend the application potential of GAs, herein we have successfully synthesized nitrogen (N) and sulfur (S) codoped GAs (NSGAs) via a simple, scalable, and inexpensive approach. Owing to their large specific surface area (up to 132 m2 g-1), profound porosity, superior mechanical properties, and coexistence of N and S atoms with tunable atomic content and bonding configurations, the as-prepared NSGAs demonstrated exceptional absorption capacity toward a broad spectrum of oils and organic solvents, with an average absorption rate many folds higher than conventional absorbents. Further, the NSGAs exhibited excellent photocatalytic activity for the decomposition of recalcitrant organic compounds under visible light illumination due to pronounced synergistic coupling effect between the heteroatoms. Specifically, after 5 h of exposure to visible light, a degradation efficiency of over 99% was observed and more than 84% of the total organic carbon was eliminated. Radical trapping experiments revealed that superoxide anion radicals are the predominant oxygen reactive species driving the photocatalytic reactions. More importantly, the mineralization byproducts did not pose any significant antibacterial activity, illustrating the environmentally benign nature of these macroscale photocatalysts.
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Affiliation(s)
- Yiqun Jiang
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Rajasekhar Balasubramanian
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.
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130
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Wang D, Saleh NB, Sun W, Park CM, Shen C, Aich N, Peijnenburg WJGM, Zhang W, Jin Y, Su C. Next-Generation Multifunctional Carbon-Metal Nanohybrids for Energy and Environmental Applications. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7265-7287. [PMID: 31199142 PMCID: PMC7388031 DOI: 10.1021/acs.est.9b01453] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Nanotechnology has unprecedentedly revolutionized human societies over the past decades and will continue to advance our broad societal goals in the coming decades. The research, development, and particularly the application of engineered nanomaterials have shifted the focus from "less efficient" single-component nanomaterials toward "superior-performance", next-generation multifunctional nanohybrids. Carbon nanomaterials (e.g., carbon nanotubes, graphene family nanomaterials, carbon dots, and graphitic carbon nitride) and metal/metal oxide nanoparticles (e.g., Ag, Au, CdS, Cu2O, MoS2, TiO2, and ZnO) combinations are the most commonly pursued nanohybrids (carbon-metal nanohybrids; CMNHs), which exhibit appealing properties and promising multifunctionalities for addressing multiple complex challenges faced by humanity at the critical energy-water-environment (EWE) nexus. In this frontier review, we first highlight the altered and newly emerging properties (e.g., electronic and optical attributes, particle size, shape, morphology, crystallinity, dimensionality, carbon/metal ratio, and hybridization mode) of CMNHs that are distinct from those of their parent component materials. We then illustrate how these important newly emerging properties and functions of CMNHs direct their performances at the EWE nexus including energy harvesting (e.g., H2O splitting and CO2 conversion), water treatment (e.g., contaminant removal and membrane technology), and environmental sensing and in situ nanoremediation. This review concludes with identifications of critical knowledge gaps and future research directions for maximizing the benefits of next-generation multifunctional CMNHs at the EWE nexus and beyond.
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Affiliation(s)
- Dengjun Wang
- National Research Council Resident Research Associate at the United States Environmental Protection Agency , Ada , Oklahoma 74820 , United States
| | - Navid B Saleh
- Department of Civil, Architectural and Environmental Engineering , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Wenjie Sun
- Department of Civil and Environmental Engineering , Southern Methodist University , Dallas , Texas 75275 , United States
| | - Chang Min Park
- Department of Environmental Engineering , Kyungpook National University , Buk-gu , Daegu 41566 , South Korea
| | - Chongyang Shen
- Department of Soil and Water Sciences , China Agricultural University , Beijing 100193 , China
| | - Nirupam Aich
- Department of Civil, Structural and Environmental Engineering , University at Buffalo, The State University of New York , Buffalo , New York 14260 , United States
| | - Willie J G M Peijnenburg
- Institute of Environmental Sciences (CML) , Leiden University , P.O. Box 9518, 2300 RA Leiden , The Netherlands
- Center for Safety of Substances and Products , National Institute for Public Health and the Environment , P.O. Box 1, 3720 BA Bilthoven , The Netherlands
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, and Environmental Science and Policy Program , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Yan Jin
- Department of Plant and Soil Sciences , University of Delaware , Newark , Delaware 19716 , United States
| | - Chunming Su
- Groundwater, Watershed, and Ecosystem Restoration Division, National Risk Management Research Laboratory, Office of Research and Development , United States Environmental Protection Agency , Ada , Oklahoma 74820 , United States
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131
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Li W, Li Z, Bertelsmann K, Fan DE. Portable Low-Pressure Solar Steaming-Collection Unisystem with Polypyrrole Origamis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900720. [PMID: 31134676 DOI: 10.1002/adma.201900720] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Solar steaming has emerged as a promising green technology that can address the global issue of scarcity of clean water. However, developing high-performance, cost-effective, and manufacturable solar-steaming materials, and portable solar steaming-collection systems for individuals remains a great challenge. Here, a one-step, low-cost, and mass-producible synthesis of polypyrrole (PPy) origami-based photothermal materials, and an original portable low-pressure controlled solar steaming-collection unisystem, offering synergetic high rates in both water evaporation and steam collection, are reported. Due to enhanced areas for vapor dissipation, the PPy origami improves the water evaporation rate by at least 71% to 2.12 kg m-2 h-1 from that of a planar structure and exhibits a solar-thermal energy conversion efficiency of 91.5% under 1 Sun. When further controlling the pressure to ≈0.17 atm in the steaming-collection unisystem, the water collection rate improves by up to 52% systematically and dramatically. Although partial energy is utilized toward obtaining low-pressure, evaluations show that the overall energy efficiency is improved remarkably in the low-pressure system compared to that in ambient pressure. Furthermore, the device demonstrates effective decontamination of heavy metals, bacteria, and desalination. This work can inspire new paradigms toward developing high-performance solar steaming technologies for individuals and households.
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Affiliation(s)
- Weigu Li
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Zheng Li
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Karina Bertelsmann
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Donglei Emma Fan
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
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132
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Wang Z, Horseman T, Straub AP, Yip NY, Li D, Elimelech M, Lin S. Pathways and challenges for efficient solar-thermal desalination. SCIENCE ADVANCES 2019; 5:eaax0763. [PMID: 31360770 PMCID: PMC6660204 DOI: 10.1126/sciadv.aax0763] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/18/2019] [Indexed: 05/21/2023]
Abstract
Solar-thermal desalination (STD) is a potentially low-cost, sustainable approach for providing high-quality fresh water in the absence of water and energy infrastructures. Despite recent efforts to advance STD by improving heat-absorbing materials and system designs, the best strategies for maximizing STD performance remain uncertain. To address this problem, we identify three major steps in distillation-based STD: (i) light-to-heat energy conversion, (ii) thermal vapor generation, and (iii) conversion of vapor to water via condensation. Using specific water productivity as a quantitative metric for energy efficiency, we show that efficient recovery of the latent heat of condensation is critical for STD performance enhancement, because solar vapor generation has already been pushed toward its performance limit. We also demonstrate that STD cannot compete with photovoltaic reverse osmosis desalination in energy efficiency. We conclude by emphasizing the importance of factors other than energy efficiency, including cost, ease of maintenance, and applicability to hypersaline waters.
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Affiliation(s)
- Zhangxin Wang
- Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37235, USA
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
| | - Thomas Horseman
- Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Anthony P. Straub
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Ngai Yin Yip
- Department of Earth and Environmental Engineering and Columbia Water Center, Columbia University, New York, NY 10027, USA
| | - Deyu Li
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
| | - Shihong Lin
- Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37235, USA
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
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Diesel soot coated non-woven fabric for oil-water separation and adsorption applications. Sci Rep 2019; 9:8503. [PMID: 31186511 PMCID: PMC6560123 DOI: 10.1038/s41598-019-44920-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 05/21/2019] [Indexed: 01/29/2023] Open
Abstract
The diesel soot (DS) coated non-woven fabric was studied for oil-water separation along with the adsorption of dyes, detergents, and pharmaceuticals. The DS coated non-woven fabric showed more than 95% separation efficiency and consistent repeatable performance during oil-water separation experiment. In addition to this, the DS coated non-woven fabric of 17.2 cm2 area successfully adsorbed ~85%, 97%, and 100% methylene blue (MB) dye, ciprofloxacin, and detergent, respectively from their respective solutions within 30 min, which was not possible using uncoated non-woven fabric. The DS coated non-woven fabric was found to be hydrophobic with the contact angle of 140° which was almost invariant upto 60 °C. Hence, the DS coated non-woven fabric showed promising performance in the oil-water separation and adsorption applications.
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134
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Filina A, Yousefi N, Okshevsky M, Tufenkji N. Antimicrobial Hierarchically Porous Graphene Oxide Sponges for Water Treatment. ACS APPLIED BIO MATERIALS 2019; 2:1578-1590. [DOI: 10.1021/acsabm.9b00008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anya Filina
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec H3A 0C5, Canada
| | - Nariman Yousefi
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec H3A 0C5, Canada
| | - Mira Okshevsky
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec H3A 0C5, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec H3A 0C5, Canada
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