551
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Padmavathy N, Behera SS, Pathan S, Das Ghosh L, Bose S. Interlocked Graphene Oxide Provides Narrow Channels for Effective Water Desalination through Forward Osmosis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7566-7575. [PMID: 30681825 DOI: 10.1021/acsami.8b20598] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Unique two-dimensional water channels formed by stacked graphene oxide (GO) sheets that are "nonleachable" and nonswellable can show great potential for water remediation. The interlayer spacing controls the solute or ion sieving and plays a crucial role in water transport in GO-based membranes. Herein, the sub-nano-channels adjacent to the sheets are altered by either ionic or covalent cross-linking using magnesium hydroxide (Mg(OH)2) and graphene oxide quantum dots (GQDs) (named GOM and G-GQD), respectively. In aqueous solution, these cross-linkers prevent the GO sheets from swelling and precisely control the interlayer spacing required for water permeation. In addition, these narrowed GO sheets facilitate significant improvement in salt rejection of a divalent ion by forward osmosis and selective dye rejection and are resistive toward biofouling and bacterial growth. The cross-linked GO membranes are robust enough to withstand strong cross-flow velocity and aided in unimpeded water transport through the nanochannels. Among the membranes, the G-GQD membranes (G-GQD) show better antifouling characteristics, dye separation performance over 95-97% for various dyes, divalent ion rejection by 97%, and no cytotoxicity against HaCaT cells as compared with other GO membranes. Our findings on interlocking the domains of nanoslits of the GO structure by small ecofriendly molecules portray these materials as potential candidates for water separation applications.
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Affiliation(s)
- Nagarajan Padmavathy
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Shasanka Sekhar Behera
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Shabnam Pathan
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Lopamudra Das Ghosh
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Suryasarathi Bose
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
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552
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Ruiz-Barragan S, Muñoz-Santiburcio D, Marx D. Nanoconfined Water within Graphene Slit Pores Adopts Distinct Confinement-Dependent Regimes. J Phys Chem Lett 2019; 10:329-334. [PMID: 30571135 DOI: 10.1021/acs.jpclett.8b03530] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In view of the increasing importance of nanoconfined aqueous solutions for various technological applications, it has become necessary to understand how strong confinement affects the properties of water at the level of molecular and even electronic structure. By performing extensive ab initio simulations of two-dimensionally nanoconfined water lamellae between graphene sheets subject to different interlayer spacings, we find new regimes at interlayer distances of 10 Å and less where water can be described neither to behave like interfacial water nor to be bulklike at the level of its H-bonding characteristics and electronic structure properties. It is expected that this finding will offer new opportunities to tune both diffusive and reactive processes taking place in aqueous environments that are strongly confined by chemically inert hard walls.
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Affiliation(s)
- Sergi Ruiz-Barragan
- Lehrstuhl für Theoretische Chemie , Ruhr-Universität Bochum , 44780 Bochum , Germany
| | - Daniel Muñoz-Santiburcio
- Lehrstuhl für Theoretische Chemie , Ruhr-Universität Bochum , 44780 Bochum , Germany
- CIC nanoGUNE , Tolosa Hiribidea 76 , E-20018 San Sebastián , Spain
| | - Dominik Marx
- Lehrstuhl für Theoretische Chemie , Ruhr-Universität Bochum , 44780 Bochum , Germany
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553
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Han JL, Haider MR, Liu MJ, Wang HC, Jiang WL, Ding YC, Hou YN, Cheng HY, Xia X, Wang AJ. Borate Inorganic Cross-Linked Durable Graphene Oxide Membrane Preparation and Membrane Fouling Control. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:1501-1508. [PMID: 30592608 DOI: 10.1021/acs.est.8b04194] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene oxide (GO) membranes have the potential to be next-generation membranes. However, the GO layer easily swells in water and risks shedding during the long-term filtration. Organic GO interlayer organic cross-linking agent was not resistant to oxidation, which limits the application scope of GO membrane. In this study, an inorganic cross-linked GO membrane was prepared via the reaction of sodium tetraborate and GO hydroxyl groups, and a -B-O-C- cross-linking bond was detected by X-ray photoelectron spectroscopy (XPS). Additionally, a new atomic force microscope scratch method to evaluate the cross-linking force of a nanoscale GO layer was proposed. It showed that the critical destructive load of the inorganic cross-linked GO membrane increased from 8 to 80 nN, which was a 10-fold increase from that of the nonlinked sample. During the NaOH/sodium dodecyl sulfate (SDS) destructive wash tests, morphology, flux and retention rate of inorganic cross-linked GO remained stable while the comparative membranes showed significant destruction. At the same time, based on the better oxidation resistance, organic membrane fouling was effectively controlled by the introduction of trace ·OH radicals. This study provides a new perspective for GO membrane preparation, interlayer cross-linking force testing and membrane fouling control.
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Affiliation(s)
- Jing-Long Han
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Muhammad Rizwan Haider
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Mei-Jun Liu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Hong-Cheng Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Wen-Li Jiang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Yang-Cheng Ding
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Ya-Nan Hou
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin 150090 , People's Republic of China
| | - Hao-Yi Cheng
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Xue Xia
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Ai-Jie Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin 150090 , People's Republic of China
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554
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Peng Y, Yang Y, Sun Y, Huang Y, Sun CQ. Phonon abundance-stiffness-lifetime transition from the mode of heavy water to its confinement and hydration. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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555
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One step co-sintering process for low-cost fly ash based ceramic microfiltration membrane in oil-in-water emulsion treatment. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.040] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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556
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Liu F, Wang M, Wang X, Wang P, Shen W, Ding S, Wang Y. Fabrication and application of nanoporous polymer ion-track membranes. NANOTECHNOLOGY 2019; 30:052001. [PMID: 30511655 DOI: 10.1088/1361-6528/aaed6d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
With the development of the nano-fabrication and nanofluidics, nanoporous membranes have shown great potential in applications such as molecular separation, energy conversion, and molecular sensing. However, their performance has often been limited by the trade-off between selectivity and permeability and the lack of scalability. The prospect of overcoming these problems with nanoporous polymer ion-track membranes is promising. Focusing on these membranes, this review provides a comprehensive overview of fabrication methods, including the traditional track-etching technique and the recently developed track-UV technique; characterization methods; transport mechanisms; and major properties and applications.
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Affiliation(s)
- Feng Liu
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China. Center for Quantitative Biology, Peking University, Beijing 100871, People's Republic of China
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557
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Inhibitory effect of hydrogen ion on the copper ions separation from acid solution across graphene oxide membranes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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558
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Zhao Y, Gao C, Van der Bruggen B. Technology-driven layer-by-layer assembly of a membrane for selective separation of monovalent anions and antifouling. NANOSCALE 2019; 11:2264-2274. [PMID: 30657514 DOI: 10.1039/c8nr09086f] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Selective separation of monovalent anions with reduced fouling is one of the major challenges for anion exchange membranes (AEM) in electrodialysis (ED). In this research, an alternating current layer-by-layer (AC∼LbL) assembly technology was first proposed and then applied to the construction of a durable multilayer with the selective separation of monovalent anions with reduced fouling. Under an alternating current (AC) electric field, the hydrophilic poly(4-styrenesulfonic acid-co-maleic acid) sodium salt and 2-hydroxypropyltrimethyl ammonium chloride chitosan were homogenized and rapidly assembled on a commercial original AEM and then crosslinked using 1,4-bis(2',3'-epoxypropyl) perfluoro-1-butane. In ED, the permselectivity and the selective separation efficiency [separation parameter between sulfate (SO42-) and chloride (Cl-) ions] of the resulting membrane (AC∼LbL#7.5 AEM) were 4.87 and 62%, respectively, whereas the original AEM had corresponding parameters of 0.81 and -8%, respectively. Furthermore, the AC∼LbL#7.5 AEM still retained a permselectivity of 4.52 and a selective separation efficiency for Cl- of 57% after 96 h of ED operation. In addition, the AC∼LbL#7.5 AEM showed an excellent antifouling property when three types of organic fouling materials: sodium dodecylbenzenesulfonate, bovine serum albumin and humic acid were used as model foulants.
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Affiliation(s)
- Yan Zhao
- Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
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559
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The Preparation and Study of Ethylene Glycol-Modified Graphene Oxide Membranes for Water Purification. Polymers (Basel) 2019; 11:polym11020188. [PMID: 30960172 PMCID: PMC6418752 DOI: 10.3390/polym11020188] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/11/2019] [Accepted: 01/21/2019] [Indexed: 11/17/2022] Open
Abstract
In this work, graphene oxide (GO)/ethylene glycol (EG) membranes were designed by a vacuum filtration method for molecular separation and water purification. The composite membranes were characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The interlayer spacing of GO membranes (0.825 nm) and GO/EG membranes (0.634 nm) are measured by X-ray diffraction (XRD). Using the vacuum filtration method, the membrane thickness can be controlled by selecting the volume of the solution from which the membrane is prepared, to achieve high water permeance and high rejection of Rhodamine B (RhB). The membrane performance was evaluated on a dead-end filtration device. The water permeance and rejection of RhB of the membranes are 103.35 L m−2 h−1 bar−1 and 94.56% (GO), 58.17 L m−2 h−1 bar−1 and 97.13% (GO/EG), respectively. The permeability of GO/EG membrane is about 40 × 10−6 L m-1 h−1 bar−1. Compared with the GO membrane, the GO/EG membrane has better separation performance because of its proper interlayer spacing. In this study, the highest rejection of RhB (99.92%) is achieved. The GO/EG membranes have potential applications in the fields of molecular separation and water purification.
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560
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Fei W, Xue M, Qiu H, Guo W. Heterogeneous graphene oxide membrane for rectified ion transport. NANOSCALE 2019; 11:1313-1318. [PMID: 30604817 DOI: 10.1039/c8nr07557c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Ion transport in nanoconfinement has drawn significant attention due to its crucial role in the functioning of biological nanochannels and in the stimulation of applications including iontronics, biosensing and energy conversion. Graphene oxide (GO) membranes that contain abundant two-dimensional nanochannels formed in-between stacked GO nanosheets are particularly attractive because they offer high tunability in terms of channel dimensions and surface properties. However, because of the inherent homogeneity of the GO membrane, ion transport through such nanochannels typically exhibit ohmic behaviour, inhibiting its potential widespread applications. Herein, we demonstrate heterogeneous GO membranes for a voltage-driven ion transport. The membrane is composed of a negatively-charged GO and a positively-charged PEI-grafted GO laminate. Highly rectified ion transport are observed through such membranes. Molecular dynamics simulations are employed to reveal micro-processes of ion behaviours in the two-dimensional nanochannels of the heterogeneous membranes. Furthermore, an enhancement of rectification performance is achieved when charge asymmetry of nanochannels is strengthened by adjusting the pH conditions of the electrolyte solutions. Our study should provide a potential paradigm for the application of GO membranes in ion transport control and the use as ionic rectifiers.
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Affiliation(s)
- Wenwen Fei
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the MOE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
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561
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Gopinadhan K, Hu S, Esfandiar A, Lozada-Hidalgo M, Wang FC, Yang Q, Tyurnina AV, Keerthi A, Radha B, Geim AK. Complete steric exclusion of ions and proton transport through confined monolayer water. Science 2019; 363:145-148. [DOI: 10.1126/science.aau6771] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/23/2018] [Indexed: 12/19/2022]
Abstract
It has long been an aspirational goal to create artificial structures that allow fast permeation of water but reject even the smallest hydrated ions, replicating the feat achieved by nature in protein channels (e.g., aquaporins). Despite recent progress in creating nanoscale pores and capillaries, these structures still remain distinctly larger than protein channels. We report capillaries made by effectively extracting one atomic plane from bulk crystals, which leaves a two-dimensional slit of a few angstroms in height. Water moves through these capillaries with little resistance, whereas no permeation could be detected even for such small ions as Na+and Cl−. Only protons (H+) can diffuse through monolayer water inside the capillaries. These observations improve our understanding of molecular transport at the atomic scale.
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562
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Kim C, An S, Lee J, Zeng Q, Fortner JD. Engineering Graphene Oxide Laminate Membranes for Enhanced Flux and Boron Treatment with Polyethylenimine (PEI) Polymers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:924-929. [PMID: 30540180 DOI: 10.1021/acsami.8b18545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we have developed and characterized flux-enhanced graphene oxide laminate (GOL) membranes by increasing interlayer (layer-to-layer) spacing using multibranched polyethylenimine (PEI) polymers with varied molecular weights and by controlling the graphene oxide (GO) oxidation extent. For these assemblies, water flux was demonstrated to increase by as much as ca. 30-fold compared to GO only laminate controls. PEI-embedded GOL membranes also had better methyl orange (MO) rejection performance than GO laminate controls due to the dilution effects (i.e., water is transported through the assembly much faster than MO). Further, boron removal is demonstrated via functionalized PEI with d-glucono-1,5-lactone, containing a high density of boron chelating groups, which can also be recycled/recovered with high efficiency.
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Affiliation(s)
- Changwoo Kim
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Siyuan An
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Junseok Lee
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Qingqing Zeng
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - John D Fortner
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
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563
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Yan H, Wu F, Xue Y, Bryan K, Ma W, Yu P, Mao L. Water Adsorption and Transport on Oxidized Two‐Dimensional Carbon Materials. Chemistry 2019; 25:3969-3978. [DOI: 10.1002/chem.201805008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Hailong Yan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
- University of CAS Beijing 100049 China
| | - Fei Wu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
| | - Yifei Xue
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
- University of CAS Beijing 100049 China
| | - Kevin Bryan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
- Current address: Junipero Serra High School 451 west 20th Avenue San Mateo CA 94403 USA
| | - Wenjie Ma
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
- University of CAS Beijing 100049 China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of, Analytical Chemistry for Living BiosystemsInstitute of Chemistry, The Chinese Academy of Sciences (CAS), CAS Research/Education Center for, Excellence in Molecule Science Beijing 100190 China
- University of CAS Beijing 100049 China
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564
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Jiang Q, Ghim D, Cao S, Tadepalli S, Liu KK, Kwon H, Luan J, Min Y, Jun YS, Singamaneni S. Photothermally Active Reduced Graphene Oxide/Bacterial Nanocellulose Composites as Biofouling-Resistant Ultrafiltration Membranes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:412-421. [PMID: 30215517 DOI: 10.1021/acs.est.8b02772] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Biofouling poses one of the most serious challenges to membrane technologies by severely decreasing water flux and driving up operational costs. Here, we introduce a novel anti-biofouling ultrafiltration membrane based on reduced graphene oxide (RGO) and bacterial nanocellulose (BNC), which incoporates GO flakes into BNC in situ during its growth. In contrast to previously reported GO-based membranes for water treatment, the RGO/BNC membrane exhibited excellent aqueous stability under environmentally relevant pH conditions, vigorous mechanical agitation/sonication, and even high pressure. Importantly, due to its excellent photothermal property, under light illumination, the membrane exhibited effective bactericidal activity, obviating the need for any treatment of the feedwater or external energy. The novel design and in situ incorporation of the membranes developed in this study present a proof-of-concept for realizing new, highly efficient, and environmental-friendly anti-biofouling membranes for water purification.
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Affiliation(s)
- Qisheng Jiang
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Deoukchen Ghim
- Department of Energy, Environmental & Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Sisi Cao
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Sirimuvva Tadepalli
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Keng-Ku Liu
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Hyuna Kwon
- Department of Energy, Environmental & Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
- Department of Energy and Resources Engineering , Seoul National University , Seoul 08826 , South Korea
| | - Jingyi Luan
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Yujia Min
- Department of Energy, Environmental & Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Young-Shin Jun
- Department of Energy, Environmental & Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Srikanth Singamaneni
- Institute of Materials Science and Engineering and Department of Mechanical Engineering and Materials Science , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
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565
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Sahu S, Zwolak M. Colloquium: Ionic phenomena in nanoscale pores through 2D materials. REVIEWS OF MODERN PHYSICS 2019; 91:10.1103/RevModPhys.91.021004. [PMID: 31579274 PMCID: PMC6774369 DOI: 10.1103/revmodphys.91.021004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Ion transport through nanopores permeates through many areas of science and technology, from cell behavior to sensing and separation to catalysis and batteries. Two-dimensional materials, such as graphene, molybdenum disulfide (MoS2), and hexagonal boron nitride (hBN), are recent additions to these fields. Low-dimensional materials present new opportunities to develop filtration, sensing, and power technologies, encompassing ion exclusion membranes, DNA sequencing, single molecule detection, osmotic power generation, and beyond. Moreover, the physics of ionic transport through pores and constrictions within these materials is a distinct realm of competing many-particle interactions (e.g., solvation/dehydration, electrostatic blockade, hydrogen bond dynamics) and confinement. This opens up alternative routes to creating biomimetic pores and may even give analogues of quantum phenomena, such as quantized conductance, in the classical domain. These prospects make membranes of 2D materials - i.e., 2D membranes - fascinating. We will discuss the physics and applications of ionic transport through nanopores in 2D membranes.
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Affiliation(s)
- Subin Sahu
- Biophysics Group, Microsystems and Nanotechnology Division, Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
- Maryland NanoCenter, University of Maryland, College Park, Maryland 20742, USA
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566
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Yang Y, Chen L, Li DY, Yi RB, Mo JW, Wu MH, Xu G. Controllable reduction of graphene oxide by electron-beam irradiation. RSC Adv 2019; 9:3597-3604. [PMID: 35518112 PMCID: PMC9060318 DOI: 10.1039/c8ra06797j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/14/2019] [Indexed: 12/03/2022] Open
Abstract
The oxygen content of graphene oxide (GO) is directly related to its physical and chemical properties, such as hydrophilicity, suspension stability, adsorption, and ion-sieving ability of GO membranes. Here, a series of reduced GO (rGO) with C/O atomic ratios from 1.6 to 4.8 were prepared conveniently by electron-beam irradiation (EBI) with irradiation-dose control. Moreover, a single oxygen-containing group, i.e., epoxy or carbonyl, could be retained mainly in the rGO. The interlayer spacing of rGO could be changed from 9.6 Å to 7.4 Å through control of the oxygen content. The prepared rGO exhibited an excellent adsorption effect on Pb(ii) ions, and the max adsorption capacity reached 194.76 mg g−1 for rGO with a low irradiation dose (5 kGy), which showed that the ratio of oxygen-containing groups is important for improving the adsorption of rGO in aqueous solution. These results indicated that highly efficient, environmentally friendly, and advanced EBI technology has good potential prospects for use in the large-scale production of rGO with precise control of the oxygen content. The oxygen content of graphene oxide (GO) is directly related to its physical and chemical properties, such as hydrophilicity, suspension stability, adsorption, and ion-sieving ability of GO membranes.![]()
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Affiliation(s)
- Yu Yang
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
| | - Liang Chen
- Department of Optical Engineering
- Zhejiang A&F University
- China
| | - De-Yuan Li
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
| | - Ruo-Bing Yi
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
| | - Jia-Wei Mo
- Department of Optical Engineering
- Zhejiang A&F University
- China
| | - Ming-Hong Wu
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
| | - Gang Xu
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
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567
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de Aquino BRH, Ghorbanfekr-Kalashami H, Neek-Amal M, Peeters FM. Ionized water confined in graphene nanochannels. Phys Chem Chem Phys 2019; 21:9285-9295. [DOI: 10.1039/c9cp00075e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When confined between graphene layers, water in the presence of additional hydronium and hydroxide ions exhibits distinct properties such as ion layering structure determined by the channel size, disruption of the ion solvation shell, and slower ion recombination rate as compared to bulk water.
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Affiliation(s)
| | | | - M. Neek-Amal
- Department of Physics
- Shahid Rajaee Teacher Training University
- Lavizan
- Iran
| | - F. M. Peeters
- Department of Physics
- Universiteit Antwerpen
- B-2020 Antwerpen
- Belgium
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568
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Liu X, Shi G. A novel storage design for ultrahigh-cell-voltage Al-ion batteries utilizing cation–π interactions. Chem Commun (Camb) 2019; 55:14198-14201. [DOI: 10.1039/c9cc07293d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We propose a novel storage design for ultrahigh-cell-voltage Al-ion battery by utilizing cation–π interactions by means of density functional theory (DFT) computations.
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Affiliation(s)
- Xing Liu
- Shanghai Applied Radiation Institute and State Key Lab. Advanced Special Steel
- Shanghai University
- Shanghai 200444
- China
| | - Guosheng Shi
- Shanghai Applied Radiation Institute and State Key Lab. Advanced Special Steel
- Shanghai University
- Shanghai 200444
- China
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
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569
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Liu G, Jiang Z, Li C, Hou L, Chen C, Yang H, Pan F, Wu H, Zhang P, Cao X. Layer-by-layer self-assembled nanocomposite membranes via bio-inspired mineralization for pervaporation dehydration. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.09.067] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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570
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Yi R, Yang R, Yu R, Lan J, Chen J, Wang Z, Chen L, Wu M. Ultrahigh permeance of a chemical cross-linked graphene oxide nanofiltration membrane enhanced by cation–π interaction. RSC Adv 2019; 9:40397-40403. [PMID: 35542666 PMCID: PMC9076233 DOI: 10.1039/c9ra07109a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/29/2019] [Indexed: 11/29/2022] Open
Abstract
Cross-linking with large flexible molecules is a common method to improve the stability and control the interlayer spacing of graphene oxide (GO) membranes, but it still suffers from the limitation of low water flux. Herein, a novel high flux GO membrane was fabricated using a pressure-assisted filtration method, which involved a synergistic chemical cross-linking of divalent magnesium ions and 1,6-hexanediamine (HDA) on a polyethersulfone (PES) support. The membrane cross-linked with magnesium ions and HDA (GOHDA–Mg2+) exhibited a high water flux up to 144 L m−2 h−1 bar−1, about 7 times more than that of cross-linked GO membranes without adding magnesium ions (GOHDA), while keeping excellent rejection performance. The GOHDA–Mg2+ membrane also showed an outstanding stability in water for a long time. The effects of magnesium ions on the GOHDA–Mg2+ membrane were analyzed using several characterization methods, including Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results indicated that magnesium ions not only promoted reasonable cross-linking, but also improved the stacking of GO sheets to give lower mass transfer resistance channels for water transport in the membranes, resulting in the ultrahigh permeance of the GO membranes. Chemical cross-linking together with magnesium ions, potentially promoting reasonable cross-linking and improving the water channels of membrane in terms of flatness and surface with low mass transfer resistance.![]()
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Affiliation(s)
- Ruobing Yi
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Rujie Yang
- Department of Optical Engineering
- Zhejiang A&F University
- Lin'an
- P. R. China
| | - Risheng Yu
- Department of Optical Engineering
- Zhejiang A&F University
- Lin'an
- P. R. China
| | - Jian Lan
- College of Pharmaceutical Chemistry and Materials Engineering
- Taizhou University
- Taizhou
- China
| | - Junlang Chen
- Department of Optical Engineering
- Zhejiang A&F University
- Lin'an
- P. R. China
| | - Zhikun Wang
- Department of Optical Engineering
- Zhejiang A&F University
- Lin'an
- P. R. China
| | - Liang Chen
- Department of Optical Engineering
- Zhejiang A&F University
- Lin'an
- P. R. China
| | - Minghong Wu
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- P. R. China
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571
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Liu T, Chu Z, Jin W. Electrochemical mercury biosensors based on advanced nanomaterials. J Mater Chem B 2019. [DOI: 10.1039/c9tb00418a] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review presents an overview of the synthesis strategies and electrochemical performance of recently developed nanomaterials for the Hg2+ assay.
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Affiliation(s)
- Tao Liu
- State Key Laboratory of Material-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Zhenyu Chu
- State Key Laboratory of Material-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Wanqin Jin
- State Key Laboratory of Material-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
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572
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Yang Y, Mu L, Chen L, Shi G, Fang H. Precise control of the interlayer spacing between graphene sheets by hydrated cations. Phys Chem Chem Phys 2019; 21:7623-7629. [DOI: 10.1039/c8cp07837h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Based on DFT computations, we show that different hydrated cations can precisely control the interlayer spacings between graphene sheets, which are smaller than that between graphene oxide sheets, indicating an ion sieving.
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Affiliation(s)
- Yizhou Yang
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- CAS
- Shanghai 201800
- China
| | - Liuhua Mu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- CAS
- Shanghai 201800
- China
| | - Liang Chen
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Zhejiang 311300
- China
| | - Guosheng Shi
- Shanghai Applied Radiation Institute
- Shanghai University
- Shanghai 200444
- China
| | - Haiping Fang
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- CAS
- Shanghai 201800
- China
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573
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Lu M, Li L, Shen S, Chen D, Han W. Highly efficient removal of Pb2+ by a sandwich structure of metal–organic framework/GO composite with enhanced stability. NEW J CHEM 2019. [DOI: 10.1039/c8nj05091k] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sandwich-structured MIL-101(Fe)/GO was successfully synthesized by a one-step hydrothermal method, and exhibited a high adsorption capacity and fast adsorption kinetics.
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Affiliation(s)
- Mengjie Lu
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - La Li
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Siqi Shen
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Duo Chen
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Wei Han
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
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574
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Zhang Y, Zhu C, Liu F, Yuan Y, Wu H, Li A. Effects of ionic strength on removal of toxic pollutants from aqueous media with multifarious adsorbents: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:265-279. [PMID: 30055489 DOI: 10.1016/j.scitotenv.2018.07.279] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/19/2018] [Accepted: 07/19/2018] [Indexed: 05/12/2023]
Abstract
Adsorption is one of the most widely used and effective wastewater treatment methods. The role of ionic strength (IS) in shaping the adsorption performances is much necessary due to the ubiquity of electrolyte ions in water body and industrial effluents. The influences of IS on adsorption are rather complex, because electrolyte ions affect both adsorption kinetics and thermodynamics by changing the basic characteristics of adsorbents and adsorbates. For a given adsorption system, multiple or even contradictory effects of IS may coexist under identical experimental conditions, rendering the dominant mechanism recognition and net effect prediction complicated. We herein reviewed the key advancement on the interaction and mechanisms of IS, including change in number of active sites for adsorbents, ion pair for metal ions, molecular aggregation and salting-out effect for organic compounds, site competition for both inorganic and organic adsorbates, and charge compensation for adsorbent-adsorbate reciprocal interactions. The corresponding fundamental theory was thoroughly described, and the efforts made by various researchers were explicated. The structural optimization of adsorbents affected by IS was detailed, also highlighting polyamine materials with exciting "salt-promotion" effects on heavy metal removal from high salinity wastewater. In addition, the research trends and prospects were briefly discussed.
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Affiliation(s)
- Yanhong Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Changqing Zhu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Fuqiang Liu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210023, PR China.
| | - Yuan Yuan
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Haide Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210023, PR China
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575
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Sun J, Iakunkov A, Rebrikova AT, Talyzin AV. Exactly matched pore size for the intercalation of electrolyte ions determined using the tunable swelling of graphite oxide in supercapacitor electrodes. NANOSCALE 2018; 10:21386-21395. [PMID: 30427042 DOI: 10.1039/c8nr07469k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The intercalation of solvent molecules and ions into sub-nanometer-sized pores is one of the most disputed subjects in the electrochemical energy storage applications of porous materials. Here, we demonstrate that the temperature- and concentration-dependent swelling of graphite oxide (GO) can be used to determine the smallest pore size required for the intercalation of electrolyte ions into hydrophilic pores. The structure of Brodie graphite oxide (BGO) in acetonitrile can be temperature-switched between the ambient one-layer solvate with an interlayer distance of ∼8.9 Å and the two-layer solvate (∼12.5 Å) at low temperature, thus providing slit pores of approximately 2.5 and 6 Å. Using in situ synchrotron radiation X-ray diffraction (XRD) and the temperature dependence of capacitance in supercapacitor devices, we found that solvated tetraethylammonium tetrafluoroborate (TEA-BF4) ions do not penetrate into both the 2.5 and 6 Å slit pores formed by BGO interlayers. However, increasing the electrolyte concentration results in the formation of a new phase at low temperature. This phase shows a distinct interlayer distance of ∼15-16.6 Å, which corresponds to the insertion of partly desolvated TEA-BF4 ions. Therefore, the remarkable ability of the GO structure to adopt variable interlayer distances allows for the determination of pore sizes that are optimal for solvated TEA-BF4 ions (about 9-10 Å). The intercalation of TEA-BF4 ions into the BGO structure is also detected as an anomaly in the temperature dependence of supercapacitor performance. The BGO structure remains to be expanded, even after the removal of acetonitrile, adopting an interlayer distance of ∼10 Å.
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Affiliation(s)
- Jinhua Sun
- Department of Physics, Umeå University, SE-90187 Umeå, Sweden.
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576
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Sun CQ. Aqueous charge injection: solvation bonding dynamics, molecular nonbond interactions, and extraordinary solute capabilities. INT REV PHYS CHEM 2018. [DOI: 10.1080/0144235x.2018.1544446] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Chang Q. Sun
- EBEAM, Yangtze Normal University, Chongqing, People's Republic of China
- NOVITAS, EEE, Nanyang Technological University, Singapore, Singapore
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577
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Zhao D, Zhao J, Ji Y, Liu G, Liu S, Jin W. Facilitated water-selective permeation via PEGylation of graphene oxide membrane. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.09.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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578
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Wang X, Shi G, Liang S, Liu J, Li D, Fang G, Liu R, Yan L, Fang H. Unexpectedly High Salt Accumulation inside Carbon Nanotubes Soaked in Dilute Salt Solutions. PHYSICAL REVIEW LETTERS 2018; 121:226102. [PMID: 30547604 DOI: 10.1103/physrevlett.121.226102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 03/01/2018] [Indexed: 06/09/2023]
Abstract
We experimentally demonstrate the formation of salt aggregations with unexpectedly high concentration inside multiwalled carbon nanotubes (CNTs) soaked only in dilute salt solution sand even in solutions containing only traces of salts. This finding suggests the blocking of fluid across CNTs by the salt aggregations when CNTs are soaked in a dilute salt solution with the concentration of seawater or even lower, which may open new avenues for the development of novel CNT-based desalination techniques. The high salt accumulation of CNTs also provides a new CNT-based strategy for the collection or extraction of noble metal salts in solutions containing traces of noble metal salts. Theoretical analyses reveal that this high salt accumulation inside CNTs can be mainly attributed to the strong hydrated cation-π interactions of hydrated cations and π electrons in the aromatic rings of CNTs.
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Affiliation(s)
- Xueliang Wang
- Center for Thorium Molten Salt Reactor System, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guosheng Shi
- Division of Interfacial Water, Key Laboratory of Interfacial Physics and Technology and Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Applied Radiation Institute and Department of Physics, Shanghai University, Shanghai 200444, China
| | - Shanshan Liang
- Division of Interfacial Water, Key Laboratory of Interfacial Physics and Technology and Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jian Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Deyuan Li
- Division of Interfacial Water, Key Laboratory of Interfacial Physics and Technology and Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Applied Radiation Institute and Department of Physics, Shanghai University, Shanghai 200444, China
| | - Gang Fang
- Division of Interfacial Water, Key Laboratory of Interfacial Physics and Technology and Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Renduo Liu
- Center for Thorium Molten Salt Reactor System, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Long Yan
- Center for Thorium Molten Salt Reactor System, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Haiping Fang
- Division of Interfacial Water, Key Laboratory of Interfacial Physics and Technology and Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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579
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Hu R, Wang C, Liu X, He Y, Zhao G, Zhu H. Facile Fabrication of Unimpeded and Stable Graphene Oxide Coating on Reverse Osmosis Membrane for Dual‐Functional Protection. ChemistrySelect 2018. [DOI: 10.1002/slct.201802801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ruirui Hu
- State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Chen Wang
- State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Xu Liu
- Department of BiologySchool of Life ScienceTsinghua University Beijing 100084 China
| | - Yijia He
- State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Guoke Zhao
- State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Hongwei Zhu
- State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
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580
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Zhao J, Dai Y, Wang Z, Ren W, Wei Y, Cao X, Xing B. Toxicity of GO to Freshwater Algae in the Presence of Al 2O 3 Particles with Different Morphologies: Importance of Heteroaggregation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13448-13456. [PMID: 30336668 DOI: 10.1021/acs.est.8b00815] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The roles of Al2O3 particles with different morphologies in altering graphene oxide (GO) toxicity to Chlorella pyrenoidosa were investigated. Algal growth inhibition by GO with coexisting Al2O3 particles was much lower than the sum of inhibitions from the individual materials for all the three Al2O3, showing the toxicity mitigation by Al2O3. The lowest GO toxicity was observed at the concentrations of 300, 150, and 100 mg/L for Al2O3 nanoparticles (NPs, 8-10 nm), bulk particles (BPs, 100-300 nm), and fibers (diameter: 10 nm; length: 400 nm), respectively. GO-Al2O3 heteroaggregation was responsible for the observed toxicity reduction. GO-induced algal membrane damage was suppressed by the three types of Al2O3 due to GO-Al2O3 heteroaggregation, and the reduction in intracellular reactive oxygen species generation and physical contact were confirmed as two main mechanisms. Moreover, the exposure sequence of GO and Al2O3 could highly influence the toxicity, and the simultaneous exposure of individual GO and Al2O3 showed the lowest toxicity due to minimum direct contact with algal cells. Humic acid further decreased GO-Al2O3 toxicity due to enhanced steric hindrance through surface coating of GO-Al2O3 heteroaggregates. This work provides new insights into the role of natural mineral particles in altering the environmental risk of GO.
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Affiliation(s)
- Jian Zhao
- Institute of Coastal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology , Ocean University of China , Qingdao 266100 , China
- Laboratory for Marine Ecology and Environmental Science , Qingdao National Laboratory for Marine Science and Technology , Qingdao 266071 , China
| | - Yanhui Dai
- Institute of Coastal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology , Ocean University of China , Qingdao 266100 , China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering , Jiangnan University , Wuxi 214122 , China
- Laboratory for Marine Ecology and Environmental Science , Qingdao National Laboratory for Marine Science and Technology , Qingdao 266071 , China
| | - Wenting Ren
- Institute of Coastal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology , Ocean University of China , Qingdao 266100 , China
| | - Yongpeng Wei
- Institute of Coastal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology , Ocean University of China , Qingdao 266100 , China
| | - Xuesong Cao
- Institute of Coastal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology , Ocean University of China , Qingdao 266100 , China
- Stockbridge School of Agriculture , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Baoshan Xing
- Stockbridge School of Agriculture , University of Massachusetts , Amherst , Massachusetts 01003 , United States
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581
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Loche P, Ayaz C, Schlaich A, Bonthuis DJ, Netz RR. Breakdown of Linear Dielectric Theory for the Interaction between Hydrated Ions and Graphene. J Phys Chem Lett 2018; 9:6463-6468. [PMID: 30382706 DOI: 10.1021/acs.jpclett.8b02473] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Many vital processes taking place in electrolytes, such as nanoparticle self-assembly, water purification, and the operation of aqueous supercapacitors, rely on the precise many-body interactions between surfaces and ions in water. Here we study the interaction between a hydrated ion and a charge-neutral graphene layer using atomistic molecular dynamics simulations. For small separations, the ion-graphene repulsion is of nonelectrostatic nature, and for intermediate separations, van der Waals attraction becomes important. Contrary to prevailing theory, we show that nonlinear and tensorial dielectric effects become non-negligible close to surfaces, even for monovalent ions. This breakdown of standard isotropic linear dielectric theory has important consequences for the understanding and modeling of charged objects at surfaces.
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Affiliation(s)
- Philip Loche
- Fachbereich Physik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Cihan Ayaz
- Fachbereich Physik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Alexander Schlaich
- Fachbereich Physik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
- Laboratoire Interdisciplinaire de Physique, CNRS and Université Grenoble Alpes, UMR CNRS 5588 , 38000 Grenoble , France
| | - Douwe Jan Bonthuis
- Fachbereich Physik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Roland R Netz
- Fachbereich Physik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
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582
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Tran NA, Lee C, Lee DH, Cho KH, Joo SW. Water Molecules on the Epoxide Groups of Graphene Oxide Surfaces. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11600] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nam Anh Tran
- Department of Information Communication, Materials Engineering, Chemistry Convergence Technology; Soongsil University; Seoul 06978 Republic of Korea
| | - Cheolmin Lee
- Department of Chemical & Biological Engineering; Seokyeong University; Seoul 02713 Republic of Korea
| | - Dong Hyun Lee
- Consulting & Technology for Environment Health and Safety; Seoul 04788 Republic of Korea
| | - Kwang-Hwi Cho
- School of Systems Biomedical Science; Soongsil University; Seoul 06978 Republic of Korea
| | - Sang-Woo Joo
- Department of Information Communication, Materials Engineering, Chemistry Convergence Technology; Soongsil University; Seoul 06978 Republic of Korea
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583
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Huang L, Huang S, Venna SR, Lin H. Rightsizing Nanochannels in Reduced Graphene Oxide Membranes by Solvating for Dye Desalination. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12649-12655. [PMID: 30257090 DOI: 10.1021/acs.est.8b03661] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Membranes with high water permeance, near-zero rejection to inorganic salts (such as NaCl and Na2SO4), and almost 100% rejection to organic dyes are of great interest for the dye desalination (the separation of dyes and salts) of textile wastewater. Herein, we prepared reduced graphene oxide membranes in a solvation state (S-rGO) with nanochannel sizes rightly between the salt ions and dye molecules. The S-rGO membrane rejects >99.0% of Direct Red 80 (DR 80) and has almost zero rejection for Na2SO4. By contrast, conventional GO or rGO membranes often have channel sizes smaller than divalent ions (such as SO42-) and thus high rejection for Na2SO4. More interestingly, high salinity in typical dye solutions decreases the channel size in the S-rGO membranes and thus increases the dye rejection, while the Na2SO4 rejection decreases because of the negatively charged surface on GO and the salt screening effect. The membranes also show pure water permeance as high as 80 L m-2 h-1 bar-1, which is about 8 times that of commercial NF 90 membrane and 2 times that of a commercial ultrafiltration membrane (with a molecular weight cutoff of 2000 Da), rendering their promise for practical dye desalination.
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Affiliation(s)
- Liang Huang
- Department of Chemical and Biological Engineering , University at Buffalo, The State University of New York , Buffalo , New York 14260 , United States
| | - Suting Huang
- Department of Chemical and Biological Engineering , University at Buffalo, The State University of New York , Buffalo , New York 14260 , United States
| | - Surendar R Venna
- National Energy Technology Laboratory/AECOM, 626 Cochrans Mill Rd. , Pittsburgh , Pennsylvania 15236 , United States
| | - Haiqing Lin
- Department of Chemical and Biological Engineering , University at Buffalo, The State University of New York , Buffalo , New York 14260 , United States
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584
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Li M, Reimers JR, Dobson JF, Gould T. Faraday cage screening reveals intrinsic aspects of the van der Waals attraction. Proc Natl Acad Sci U S A 2018; 115:E10295-E10302. [PMID: 30327347 PMCID: PMC6217410 DOI: 10.1073/pnas.1811569115] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
General properties of the recently observed screening of the van der Waals (vdW) attraction between a silica substrate and silica tip by insertion of graphene are predicted using basic theory and first-principles calculations. Results are then focused on possible practical applications, as well as an understanding of the nature of vdW attraction, considering recent discoveries showing it competing against covalent and ionic bonding. The traditional view of the vdW attraction as arising from pairwise-additive London dispersion forces is considered using Grimme's "D3" method, comparing results to those from Tkatchenko's more general many-body dispersion (MBD) approach, all interpreted in terms of Dobson's general dispersion framework. Encompassing the experimental results, MBD screening of the vdW force between two silica bilayers is shown to scale up to medium separations as 1.25 de/d, where d is the bilayer separation and de is its equilibrium value, depicting antiscreening approaching and inside de Means of unifying this correlation effect with those included in modern density functionals are urgently required.
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Affiliation(s)
- Musen Li
- International Centre for Quantum and Molecular Structures, Shanghai University, Shanghai 200444, China
- Department of Physics, Shanghai University, Shanghai 200444, China
| | - Jeffrey R Reimers
- International Centre for Quantum and Molecular Structures, Shanghai University, Shanghai 200444, China;
- Department of Physics, Shanghai University, Shanghai 200444, China
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - John F Dobson
- School of Natural Sciences, Griffith University, Nathan, QLD 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia
| | - Tim Gould
- School of Natural Sciences, Griffith University, Nathan, QLD 4111, Australia;
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia
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585
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Orooji Y, Liang F, Razmjou A, Liu G, Jin W. Preparation of anti-adhesion and bacterial destructive polymeric ultrafiltration membranes using modified mesoporous carbon. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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586
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Assembly of 2D MXene nanosheets and TiO2 nanoparticles for fabricating mesoporous TiO2-MXene membranes. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.03.077] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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587
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588
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Reduced wrinkling in GO membrane by grafting basal-plane groups for improved gas and liquid separations. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.073] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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589
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Wang M, Pan F, Yang L, Song Y, Wu H, Cheng X, Liu G, Yang H, Wang H, Jiang Z, Cao X. Graphene oxide quantum dots incorporated nanocomposite membranes with high water flux for pervaporative dehydration. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.062] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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590
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Zhang Y, Su K, Li Z. Graphene oxide composite membranes cross-linked with urea for enhanced desalting properties. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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591
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Li J, Yan H, Dang D, Wei W, Meng L. Salt and water co-assisted exfoliation of graphite in organic solvent for efficient and large scale production of high-quality graphene. J Colloid Interface Sci 2018; 535:92-99. [PMID: 30286311 DOI: 10.1016/j.jcis.2018.09.094] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/07/2018] [Accepted: 09/26/2018] [Indexed: 11/29/2022]
Abstract
Graphene has attracted enormous attention due to its unique physical properties and attractive applications in many fields. However, it is an ongoing challenge to develop a facile and low-cost method for the large scale preparation of high-quality graphene (HQGr). In this work, we have developed an improved liquid-phase exfoliation method to mass produce HQGr. This method is quite simple but efficient by exfoliation of graphite in organic solvent with the co-assistance of sodium citrate and water. Remarkably, the concentration of as-exfoliated HQGr was as high as 0.71 mg/mL under optimal conditions, while the oxygen content in HQGr was only 2.39%. After annealing at 500 °C for 2 h in argon atmosphere, the mean conductivity of annealed HQGr was as high as 1.4 × 104 S m-1. Therefore, this facile method for liquid-phase exfoliation of graphite has excellent potential in the industrial-scale production of HQGr for numerous applications in energy storage, optical and electronic fields.
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Affiliation(s)
- Jianhui Li
- School of Science, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Haiting Yan
- School of Science, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dongfeng Dang
- School of Science, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Wei Wei
- School of Science, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Lingjie Meng
- School of Science, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China; Instrumental Analysis Center, Xi'an Jiaotong University, Xi'an 710049, China.
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592
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Li W, Wu W, Li Z. Controlling Interlayer Spacing of Graphene Oxide Membranes by External Pressure Regulation. ACS NANO 2018; 12:9309-9317. [PMID: 30183255 DOI: 10.1021/acsnano.8b04187] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Graphene oxide (GO) membranes have been attracting numerous attention due to their impressive performance in various applications, especially in water purification. However, because the swelling in water and polar organic solvents causes the increase of interlayer channels, GO membranes usually possess inferior rejection for subnanometer-sized molecules. How to control the transport channels of GO membranes at angstrom level is a significantly scientific and practical issue. Herein, a concept of external pressure regulation (EPR) is reported for restraining GO swelling and controlling its interlayer spacing precisely. Since anisotropic GO films only swell at vertical direction, the interlayer channels can be manipulated by externally unidirectional reverse force. Based on this concept, an EPR system with GO membranes is designed for water desalination by adjusting the external pressure that has high resolution. In cross-flow filtration, the compressed GO membranes show high KCl, NaCl, and CaCl2 rejections of 94%, 97%, and 98%, respectively, accompanied by large water permeance up to 25 L m-2 h-1 under low feed pressure of 2 bar, despite the fact that the semi-free spatial swelling of ultrathin GO layer above the substrate pores can deteriorate salt rejection. Our work provides a straightforward physical strategy to adjust the interlayer spacing of the membranes fabricated by two-dimensional nanosheets for achieving desired filtration capacity.
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Affiliation(s)
- Wanbin Li
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 511443 , P. R. China
| | - Wufeng Wu
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 511443 , P. R. China
| | - Zhanjun Li
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 511443 , P. R. China
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593
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Xia C, Xu Z, Yu J, Sun Y, Jing W. Fabrication of microporous GO-TiO 2 membrane via an improved weak alkaline sol–gel method. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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594
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Kim S, Ou R, Hu Y, Li X, Zhang H, Simon GP, Wang H. Non-swelling graphene oxide-polymer nanocomposite membrane for reverse osmosis desalination. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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595
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Lin H, Liu R, Dangwal S, Kim SJ, Mehra N, Li Y, Zhu J. Permselective H 2/CO 2 Separation and Desalination of Hybrid GO/rGO Membranes with Controlled Pre-cross-linking. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28166-28175. [PMID: 30036034 DOI: 10.1021/acsami.8b05296] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Covalent bonding is widely adopted in graphene oxide (GO) membrane to improve structural integrity and restrict swelling, while it comes with a price of enlarged d-spacing and sacrifices membrane selectivity. This work offers a facile strategy to break the trade-off between membrane stability and selectivity. Specifically, graphene oxide (GO)/reduced graphene oxide (rGO) hybrid membranes were fabricated by a controlled pre-cross-linking method. With this method, restricted swelling by cross-linking and reduced d-spacing by GO reduction can be achieved simultaneously by controlling reaction time. Membranes were prepared on porous alumina support by vacuum filtration method. Two different d-spacing values (∼12.0 and ∼7.5 Å) were found in the hybrid membrane, representing the layer structures of expanded GO interspacing with inserted cross-linker and reduced layer spacing after GO reduction. The presence of such mixed layer structures enables restricted swelling, excellent mechanical strength, and unique separation property. The hybrid membrane shows excellent permselective H2/CO2 separation with a separation factor of 22.93 ± 1.57 and H2 permeance of 2.46 ± 0.01× 10-8 mol m-2 s-1 Pa-1. In desalination test with 3.5 wt % sea salt solution, the hybrid membrane shows high ion (Na+, K+, Mg2+, Cl-, and SO42-) rejection rate of above 99%, as well as excellent durability.
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Affiliation(s)
- Han Lin
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 United States
| | - Ruochen Liu
- School of Chemical Engineering , Oklahoma State University , Stillwater , Oklahoma 74078 United States
| | - Shailesh Dangwal
- School of Chemical Engineering , Oklahoma State University , Stillwater , Oklahoma 74078 United States
| | - Seok-Jhin Kim
- School of Chemical Engineering , Oklahoma State University , Stillwater , Oklahoma 74078 United States
| | - Nitin Mehra
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 United States
| | - Yifan Li
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 United States
| | - Jiahua Zhu
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 United States
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596
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Zhou K, Xu Z. Renormalization of Ionic Solvation Shells in Nanochannels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27801-27809. [PMID: 30058329 DOI: 10.1021/acsami.8b09232] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Recently, experimental studies on selective ion transport across nanoporous membranes or through single nanochannels have unveiled interesting behaviors of dissolved ions under nanoconfinement. However, the exploration was limited by the resolution of experimental characterization. In this work, we present an atomistic simulation-based study, showing how the nanoconfinement and surface functionalization of graphene and graphene oxide nanochannels renormalize the solvation of ions (Na+, K+, Mg2+, Ca2+, Cl-). We find that the spatial distribution of dissolved ions demonstrates a layered order in nanochannels. The 1st hydration shell structures of cations are well defined in channels with width beyond ∼1.0 nm, although the rotational degree of freedom is constrained, while the 2nd hydration shells could be destructed. In the graphene oxide nanochannels, oxygen-containing functional groups can participate in the hydration shells of univalent ions but not for the divalent ions, and the valence-dependent reduction in the ionic diffusivity offers good selectivity between the divalent and univalent ions with the interlayer spacing of ∼1.0 nm, which is absent in the graphene nanochannels. With these findings, we conclude that the assessment of permeability and selectivity of ions has to take the renormalized nature of ionic solvation shells into account in the design of nanoporous membranes or nanofluidic devices for energy and environmental applications.
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Affiliation(s)
- Ke Zhou
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics , Tsinghua University , Beijing 100084 , China
| | - Zhiping Xu
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics , Tsinghua University , Beijing 100084 , China
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597
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Kargar M, Khashei Varnamkhasti F, Lohrasebi A. Influence of electric fields on the efficiency of multilayer graphene membrane. J Mol Model 2018; 24:241. [DOI: 10.1007/s00894-018-3774-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/01/2018] [Indexed: 11/28/2022]
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598
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Zhang Z, Li N, Sun Y, Yang H, Zhang X, Li Y, Wang G, Zhou J, Zou L, Hao Z. Interfacial Force-Assisted In-Situ Fabrication of Graphene Oxide Membrane for Desalination. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27205-27214. [PMID: 30053378 DOI: 10.1021/acsami.8b08531] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Graphene-based membranes have shown great potential application prospects in many fields, especially for water purification. Except for the current relatively low salt rejection rate, another main factor restricting application of such membranes is the lack of applicable preparation processes. In this work, a facile and cost-effective method was developed that can be used to in situ fabricate a graphene oxide (GO)-based membrane inside a filtration apparatus. Novel partial reduction and cross-linking was employed to adjust the surface properties and interlayer distance of GO membranes at the subnanometer range. A simple compacting process was applied to promote the integrity and compactness of the GO-based membranes by making full use of the interfacial tensions of gas/liquid/solid, which enables the in-situ fabrication. The as-prepared PrGO membranes show good water permeability (17.2-86.5 L m-2 h-1 MPa-1), reasonable desalination rates (27.7-62.6% for NaCl and 68.4-86.1% for Na2SO4), and good rejection rates of 92.3-96.8% for methyl orange. The method is appropriate for large-scale preparation and is theoretically not restricted by the shape or texture of the basement membrane, which represents another step forward in the fabrication of GO-based membranes toward wide-ranging applications.
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Affiliation(s)
- Zhongshen Zhang
- Research Center for Environmental Material and Pollution Control Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Na Li
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Yonggang Sun
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Hongling Yang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Xin Zhang
- Research Center for Environmental Material and Pollution Control Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Yang Li
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Gang Wang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
| | - Jin Zhou
- School of Chemical Engineering , Shandong University of Technology , Zibo 255049 , People's Republic of China
| | - Linda Zou
- Department of Chemical and Environmental Engineering , Masdar Institute of Science and Technology , Abu Dhabi , United Arab Emirates
| | - Zhengping Hao
- Research Center for Environmental Material and Pollution Control Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- National Engineering Laboratory for VOCs Pollution Control Material and Technology , University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
- Department of Environmental Nano-materials and Technologies, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China
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599
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Qie F, Guo J, Tu B, Zhao X, Zhang Y, Yan Y. β-Cyclodextrin Functionalized Nanoporous Graphene Oxides for Efficient Resolution of Asparagine Enantiomers. Chem Asian J 2018; 13:2812-2817. [PMID: 30035364 DOI: 10.1002/asia.201800970] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/22/2018] [Indexed: 01/12/2023]
Abstract
Efficient resolution of racemic mixture has long been an attractive but challenging subject since Pasteur separated tartrate enantiomers in 19th century. Graphene oxide (GO) could be flexibly functionalized by using a variety of chiral host molecules and therefore, was expected to show excellent enantioselective resolution performance. However, this combination with efficient enantioselective resolution capability has been scarcely demonstrated. Here, nanoporous graphene oxides were produced and then covalently functionalized by using a chiral host material-β-cyclodextrin (β-CD). This chiral GO displayed enantioselective affinity toward the l-enantiomers of amino acids. In particular, >99 % of l-asparagine (Asn) was captured in a racemic solution of Asn while the adsorption of d-enantiomer was not observed. This remarkable resolution performance was subsequently modelled by using an attach-pull-release dynamic method. We expect this preliminary concept could be expanded to other chiral host molecules and be employed to current membrane separation technologies and finally show practical use for many other racemates.
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Affiliation(s)
- Fengxiang Qie
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Jiahui Guo
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bin Tu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xing Zhao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yuchun Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yong Yan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
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600
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Li J, Zhang Z, Cui W, Wang H, Cen W, Johnson G, Jiang G, Zhang S, Dong F. The Spatially Oriented Charge Flow and Photocatalysis Mechanism on Internal van der Waals Heterostructures Enhanced g-C3N4. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02459] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jieyuan Li
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhiyong Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Wen Cui
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
| | - Hong Wang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
| | - Wanglai Cen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- Department of Chemistry, Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, Texas 78712-0165, United States
| | - Grayson Johnson
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Guangming Jiang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
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