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Pandey RP, Kallem P, Hegab HM, Rasheed PA, Banat F, Hasan SW. Cross-linked laminar graphene oxide membranes for wastewater treatment and desalination: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115367. [PMID: 35636111 DOI: 10.1016/j.jenvman.2022.115367] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 05/10/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2D) lamellar graphene oxide (GO) membranes are emerging as attractive materials for molecular separation in water treatment because of their single atomic thickness, excellent hydrophilicity, large specific surface areas, and controllable properties. To yet, commercialization of GO laminar membranes has been hindered by their propensity to swell in hydrated conditions. Thus, chemical crosslinking of GO sheets with the polymer matrix is used to improve GO membrane hydration stability. This review focuses on pertinent themes such as how chemical crosslinking improves the hydration stability, separation performance, and antifouling properties of GO membranes.
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Affiliation(s)
- Ravi P Pandey
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
| | - Parashuram Kallem
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Hanaa M Hegab
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - P Abdul Rasheed
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, 678 557, Kerala, India
| | - Fawzi Banat
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Shadi W Hasan
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
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Hu C, Heng P, Zeng Y, Zhang Q, Zhao M, Yang Z, He Y. Fast Synthesis of Graphene Oxide-β-Lactam as a Residue-Free Environmental Bacterial Inhibitor. ACS OMEGA 2022; 7:23708-23716. [PMID: 35847294 PMCID: PMC9281299 DOI: 10.1021/acsomega.2c02328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Common pathogenic bacteria contaminate the environment through various modes of transmission. It is thus crucial to develop simple preparation methods of residue-free environmental disinfectants. β-Lactam antibiotics are frequently prescribed in clinical practice to treat bacterial infections. In this study, we used electrochemical exfoliation to synthesize graphene oxide (GO) with abundant ketene functional groups. A residue-free GO-β-lactam (GOβL) was subsequently obtained by mixing ketene and azomethine-H via a [2 + 2] cycloaddition reaction in the aqueous phase. GOβL has shown broad-spectrum bacterial inhibition against four bacteria (Staphylococcus aureus, Escherichia coli, Salmonella enterica, and Shigella dysenteriae), and it degrades rapidly within 24 h. This study provides a fast and easy method for the synthesis of GOβL, which can be employed as a promising environmental bacteriostatic disinfectant in real-life applications.
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Affiliation(s)
- Chenyan Hu
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
- Department
of Laboratory Medicine, People’s
Hospital of Xinjin District, Chengdu, Sichuan 611430, China
| | - Pengfei Heng
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
| | - Yuanyuan Zeng
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
| | - Qing Zhang
- Key
Laboratory of Food Biotechnology, School of Food and Biotechnology, Xihua University, Chengdu, Sichuan 610039, China
| | - Meilian Zhao
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
| | - Zhongzhu Yang
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
| | - Yang He
- State
Key Laboratory of Southwestern Chinese Medicine Resources, College
of Medical Technology, Chengdu University
of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China
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Graphene Oxide-Reinforced Alginate Hydrogel for Controlled Release of Local Anesthetics: Synthesis, Characterization, and Release Studies. Gels 2022; 8:gels8040246. [PMID: 35448147 PMCID: PMC9026710 DOI: 10.3390/gels8040246] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/17/2022] Open
Abstract
In pain relief, lidocaine has gained more attention as a local anesthetic. However, there are several side effects that limit the use of local anesthetics. Therefore, it is hypothesized that a hydrogel system with facile design can be used for prolonged release of lidocaine. In this study, we developed a formulation comprises of sodium alginate (SA) and graphene oxide (GO) to prolong the release of lidocaine. The gelation was induced by physically crosslinking the alginate with Ca2+ ions. The formation of blank SA and GO-reinforced SA hydrogels was investigated with different concentration of Ca2+ ions. The controlled release of lidocaine hydrochloride (LH) on both hydrogel systems was studied in PBS solution. The GO-reinforced SA hydrogels exhibited more sustained release than SA hydrogels without GO. In vitro biocompatibility test in L929 fibroblast cells confirmed the non-toxic property of hydrogels. Furthermore, to prove the in-situ gelation and biodegradability of hydrogels the hydrogels were injected on mice model and confirmed the stable gel formation. The hydrogels implanted onto the subcutaneous tissue of hydrogels retained over one week. These results indicate that LH-loaded GO-reinforced SA hydrogel can be a potential biomaterial for controlled release of local anesthetics.
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Liang S, Zhu L, Wang S, Chen L, Fang H. Fast Reduced Graphene-Based Membranes with High Desalination Performance. MEMBRANES 2021; 11:846. [PMID: 34832075 PMCID: PMC8619719 DOI: 10.3390/membranes11110846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/20/2021] [Accepted: 10/28/2021] [Indexed: 11/23/2022]
Abstract
Graphene-oxide (GO) membrane with notable ions sieving properties has attracted significant attention for many applications. However, because of the water swelling of GO membrane, the rejection of monovalent metal cations is generally low. In this work, we developed a fast and facile method to fabricate a kind of reduced GO membranes using the thermal treatment method at 160 °C for only one minute, which denoted as fast reduced GO membrane (FRGO). Surprising, the FRGO membrane represents high ion sieving ability and ultrahigh water/ions selectivity, compared with other reduced GO membranes with similar average interlayer spacings, and even superior to most of GO-based membranes reported in literature. Building on these findings, we provide a new light on fabricating of energy- and environment-related high desalination performance of GO-based membranes as well as a new insight into the transport mechanism within 2D laminar nanochannels.
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Affiliation(s)
- Shanshan Liang
- School of Physics, East China University of Science and Technology, Shanghai 200237, China; (L.Z.); (S.W.); (H.F.)
| | - Liuyuan Zhu
- School of Physics, East China University of Science and Technology, Shanghai 200237, China; (L.Z.); (S.W.); (H.F.)
| | - Shuai Wang
- School of Physics, East China University of Science and Technology, Shanghai 200237, China; (L.Z.); (S.W.); (H.F.)
| | - Liang Chen
- Department of Optical Engineering, Zhejiang Prov Key Lab Carbon Cycling Forest Ecosy, College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China;
| | - Haiping Fang
- School of Physics, East China University of Science and Technology, Shanghai 200237, China; (L.Z.); (S.W.); (H.F.)
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Preparation of a Hybrid Membrane from Whey Protein Fibrils and Activated Carbon to Remove Mercury and Chromium from Water. MEMBRANES 2020; 10:membranes10120386. [PMID: 33266234 PMCID: PMC7760280 DOI: 10.3390/membranes10120386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/10/2020] [Accepted: 11/25/2020] [Indexed: 12/07/2022]
Abstract
Water contamination by mercury and chromium has a direct effect in human health. A promising technology to remove heavy metals by membrane filtration is the use of hybrid membranes produced with whey protein fibrils (WPF) and activated carbon (AC). In this study, the best conditions to produce WPF by heat treatment were determined to maximize the removal of mercury and chromium from water using a central composed design. The results indicated that the best conditions to prepare WPF were 74 °C, 7 h and 3.8% of whey protein with adsorption capacities of 25 and 18 mg/g and removal efficiencies of 81 and 57% for mercury and chromium, respectively. WPF and AC were used to prepare a hybrid membrane that was characterized using transmission electron microscopy, atomic force microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller surface area measurements. Batch filtration experiments were performed with the hybrid membrane for chromium and mercury removal at 25, 50 and 100 mg/L to determine its adsorption capacities. A high performance of the hybrid membrane was demonstrated removing efficiently mercury and chromium from water, thus supporting more than ten filtration cycles.
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