1
|
Roy N, Kannabiran K, Mukherjee A. Integrated adsorption and photocatalytic degradation based removal of ciprofloxacin and sulfamethoxazole antibiotics using Fc@rGO-ZnO nanocomposite in aqueous systems. CHEMOSPHERE 2023; 333:138912. [PMID: 37182714 DOI: 10.1016/j.chemosphere.2023.138912] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/16/2023]
Abstract
Ferrocene functionalized rGO-ZnO nanocomposite was synthesized via the facile hydrothermal method. ZnO was reduced over the 3-dimensional rGO framework (3D-Fc@rGO) using Camellia sinensis extract. The Fc@rGO-ZnO nanocomposite was employed for pharmaceutical degradation (sulfamethoxazole (SMX) and ciprofloxacin (CIP)) in an aqueous solution under UV C light. The physicochemical properties of the as-prepared photocatalyst were characterized using FTIR, XRD, FESEM, EDS mapping, HR-TEM, XPS, and DR-UV Vis. The as-synthesized Fc@rGO-ZnO photocatalyst performed remarkably against pristine ZnO, with a fivefold increase in removal efficiency. This superior activity was attributed to its improved light harvesting, charge carrier interface, and enhanced charge separation. Additionally, the photocatalyst obeyed the Lagergen model for pseudo-first-order kinetics. Congruously, the integrated approach of Fc@rGO and ZnO as oxidizing agents was proficient in removing >95% of antibiotics (CIP and SMX) within 180 min. Furthermore, the heterostructure configuration developed between Fc@rGO and ZnO helps in charge migration and generation of abundant •OH and •O2- radicals for photodegradation activities. The toxicity assessment of the treated solutions showed improved cell viability in the algal strains of Scenedesmus and Chlorella sp. Moreover, this novel approach for the synthesis of a photoactive nanocomposite is found to be low-cost and reusable for three cycles. The nanocomposite is environmentally sustainable paving the way for practical applications in the treatment of different classes of antibiotics.
Collapse
Affiliation(s)
- Namrata Roy
- Centre for Nanobiotechnology, VIT, Vellore, India; School of Biosciences and Technology, VIT, India
| | | | | |
Collapse
|
2
|
Xia T, Wu Z, Gao E, Zhu J, Yao S, Li J. Nano-Au supported on CeO2 for plasma catalytic degradation of n-undecane: Enhancement of activity and stability. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
3
|
Kamran U, Rhee KY, Lee SY, Park SJ. Innovative progress in graphene derivative-based composite hybrid membranes for the removal of contaminants in wastewater: A review. CHEMOSPHERE 2022; 306:135590. [PMID: 35803370 DOI: 10.1016/j.chemosphere.2022.135590] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/04/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Graphene derivatives (graphene oxide) are proved as an innovative carbon materials that are getting more attraction in membrane separation technology because of its unique properties and capability to attain layer-to-layer stacking, existence of high oxygen-based functional groups, and generation of nanochannels that successively enhance the selective pollutants removal performance. The review focused on the recent innovations in the development of graphene derivative-based composite hybrid membranes (GDHMs) for the removal of multiple contaminants from wastewater treatment. To design GDHMs, it was observed that at first GO layers undergo chemical treatments with either different polymers, plasma, or sulfonyl. After that, the chemically treated GO layers were decorated with various active functional materials (either with nanoparticles, magnetite, or nanorods, etc.). By preparing GDHMs, properties such as permeability, porosity, hydrophilicity, water flux, stability, feasibility, mechanical strength, regeneration ability, and antifouling tendency were excessively improved as compared to pristine GO membranes. Different types of novel GDHMs were able to remove toxic dyes (77-100%), heavy metals/ions (66-100%), phenols (40-100%), and pharmaceuticals (74-100%) from wastewater with high efficiency. Some of GDHMs were capable to show dual contaminant removal efficacy and antibacterial activity. In this study, it was observed that the most involved mechanisms for pollutants removal are size exclusion, transport, electrostatic interactions, adsorption, and donnan exclusion. In addition to this, interaction mechanism during membrane separation technology has also been elaborated by density functional theory. At last, in this review the discussion related to challenges, limitations, and future outlook for the applications of GDHMs has also been provided.
Collapse
Affiliation(s)
- Urooj Kamran
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea; Department of Mechanical Engineering, College of Engineering, Kyung Hee University, Yongin, 445-701, South Korea
| | - Kyong Yop Rhee
- Department of Mechanical Engineering, College of Engineering, Kyung Hee University, Yongin, 445-701, South Korea.
| | - Seul-Yi Lee
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
| | - Soo-Jin Park
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
| |
Collapse
|
4
|
Abd-Elsabour M, Alsoghier HM, Alhamzani AG, Abou-Krisha MM, Yousef TA, Assaf HF. A Novel Electrochemical Sensor for Detection of Nicotine in Tobacco Products Based on Graphene Oxide Nanosheets Conjugated with (1,2-Naphthoquinone-4-Sulphonic Acid) Modified Glassy Carbon Electrode. NANOMATERIALS 2022; 12:nano12142354. [PMID: 35889578 PMCID: PMC9323772 DOI: 10.3390/nano12142354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/18/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023]
Abstract
A simple electrochemical sensor for nicotine (NIC) detection was performed. The sensor based on a glassy carbon electrode (GCE) was modified by (1,2-naphthoquinone-4-sulphonic acid)(Nq) decorated by graphene oxide (GO) nanocomposite. The synthesized (GO) nanosheets were characterized using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), FT-IR, and UV-Visible Spectroscopy. The insertion of Nq with GO nanosheets on the surface of GCE displayed high electrocatalytic activity towards NIC compared to the bare GCE. NIC determination was performed under the optimum conditions using 0.10 M of Na2SO4 as a supporting electrolyte with pH 8.0 at a scan rate of 100 mV/s using both cyclic voltammetry (CV) and differential pulse voltammetry (DPV). This electrochemical sensor showed an excellent result for NIC detection. The oxidation peak current increased linearly with a 6.5–245 µM of NIC with R2 = 0.9999. The limit of detection was 12.7 nM. The fabricated electrode provided satisfactory stability, reproducibility, and selectivity for NIC oxidation. The reliable GO/Nq/GCE sensor was successfully applied for detecting NIC in the tobacco product and a urine sample.
Collapse
Affiliation(s)
- M. Abd-Elsabour
- Chemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypt; (M.A.-E.); (H.M.A.)
| | - Hesham M. Alsoghier
- Chemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypt; (M.A.-E.); (H.M.A.)
| | - Abdulrahman G. Alhamzani
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia; (A.G.A.); (T.A.Y.)
| | - Mortaga M. Abou-Krisha
- Chemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypt; (M.A.-E.); (H.M.A.)
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia; (A.G.A.); (T.A.Y.)
- Correspondence: (M.M.A.-K.); (H.F.A.)
| | - Tarek A. Yousef
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia; (A.G.A.); (T.A.Y.)
- Mansoura Laboratory, Department of Toxic and Narcotic Drug, Forensic Medicine, Medicolegal Organization, Ministry of Justice, Mansoura 35511, Egypt
| | - Hytham F. Assaf
- Chemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypt; (M.A.-E.); (H.M.A.)
- Correspondence: (M.M.A.-K.); (H.F.A.)
| |
Collapse
|
5
|
New insights into the structure and chemical reduction of graphene oxide membranes for use in isotopic water separations. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
6
|
Wu Y, Ye H, You C, Zhou W, Chen J, Xiao W, Garba ZN, Wang L, Yuan Z. Construction of functionalized graphene separation membranes and their latest progress in water purification. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
7
|
|
8
|
Liu S, Wang S, Wang H, Lv C, Miao Y, Chen L, Yang S. Gold nanoparticles modified graphene foam with superhydrophobicity and superoleophilicity for oil-water separation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143660. [PMID: 33248768 DOI: 10.1016/j.scitotenv.2020.143660] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/19/2020] [Accepted: 11/08/2020] [Indexed: 06/12/2023]
Abstract
Leakage accidents often occur during the production, transportation, and use of petroleum products, which is a common and serious environmental issue. It is of great significance and challenge to develop efficient materials for oil-water separation. This article introduces a simple and feasible method to prepare high-performance 3D graphene foam (GF) oil-absorbing material. Gold nanoparticles (Au NPs) are loaded on the surface of graphene foam by ion sputtering and then modified with 1H, 1H, 2H, 2H-perfluorodecanethiol (PFDT). The prepared graphene sponge is porous with a large specific surface area and excellent water repellency (water contact angle exceeding 150°). The superhydrophobicity of the materials is due to the interaction between the rough structure of gold nanoparticles and the reduction of surface energy by PFDT. These outstanding properties make the functionalized graphene foam have excellent oil absorption capacity, which can even be as high as 25.8 g/g, and it can still maintain high separation performance after 10 cycles of recycling. It is worth noting that the preparation of the material is simple and reusable. Therefore, the prepared graphene foam has the potential as a promising absorbent for oil spill purification.
Collapse
Affiliation(s)
- Shuai Liu
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Shanshan Wang
- College of Grassland and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China
| | - Hui Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Chongjiang Lv
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuchen Miao
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Chen
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Sudong Yang
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China; Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| |
Collapse
|
9
|
|
10
|
Graphene Oxide Nanofiltration Membranes Containing Silver Nanoparticles: Tuning Separation Efficiency via Nanoparticle Size. NANOMATERIALS 2020; 10:nano10030454. [PMID: 32138371 PMCID: PMC7152991 DOI: 10.3390/nano10030454] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/22/2020] [Accepted: 02/28/2020] [Indexed: 01/31/2023]
Abstract
Three types of graphene oxide/silver nanoparticles (GO/AgNPs) composite membranes were prepared to investigate size-effect of AgNPs on nanofiltration ability. The size of AgNPs was 8, 20, and 33 nm, which was characterized by UV-visible spectroscopy and transmission electron microscopy. The morphology and structure of GO and GO/AgNPs composite membranes were characterized by atomic force microscopy, scanning electron microscopy, and X-ray diffraction. The filtration performance of membranes were evaluated on a dead-end filtration device. When the size of AgNPs is 20 nm, the GO/AgNPs composite membrane has the highest water flux (106.1 L m−2 h−1 bar−1) and rejection of Rhodamine B (RhB) (97.73%) among three types of composite membranes. The effect of feed concentration of dye solution and the flux of common solvent was also investigated. The mechanism was discussed, which demonstrated that both interlaying spacing and defect size influence the filtration ability of membrane, which is instructive to future study.
Collapse
|
11
|
Remanan S, Padmavathy N, Ghosh S, Mondal S, Bose S, Das NC. Porous Graphene-based Membranes: Preparation and Properties of a Unique Two-dimensional Nanomaterial Membrane for Water Purification. SEPARATION AND PURIFICATION REVIEWS 2020. [DOI: 10.1080/15422119.2020.1725048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sanjay Remanan
- Rubber Technology Center, Indian Institute of Technology, Kharagpur, India
| | - Nagarajan Padmavathy
- Department of Materials Engineering, Indian Institute of Science, Bangalore, India
| | - Sabyasachi Ghosh
- Rubber Technology Center, Indian Institute of Technology, Kharagpur, India
| | - Subhadip Mondal
- Rubber Technology Center, Indian Institute of Technology, Kharagpur, India
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science, Bangalore, India
| | - Narayan Ch. Das
- Rubber Technology Center, Indian Institute of Technology, Kharagpur, India
| |
Collapse
|
12
|
Wan H, Islam MS, Briot NJ, Schnobrich M, Pacholik L, Ormsbee L, Bhattacharyya D. Pd/Fe nanoparticle integrated PMAA-PVDF membranes for chloro-organic remediation from synthetic and site groundwater. J Memb Sci 2020; 594:117454. [PMID: 31929677 PMCID: PMC6953629 DOI: 10.1016/j.memsci.2019.117454] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The poly(methacrylic acid) (PMAA) was synthesized in the pores of commercial microfiltration PVDF membranes to allow incorporation of catalytic palladium/iron (Pd/Fe) nanoparticles for groundwater remediation. Particles of 17.1 ± 4.9 nm size were observed throughout the pores of membranes using a focused ion beam. To understand the role of Pd fractions and particle compositions, 2-chlorobiphenyl was used as a model compound in solution phase studies. Results show H2 production (Fe0 corrosion in water) is a function of Pd coverage on the Fe. Insufficient H2 production caused by higher coverage (> 10.4% for 5.5 wt%) hindered dechlorination rate. With 0.5 wt% Pd, palladized-Fe reaction rate (surface area normalized reaction rate, ksa = 0.12 L/(m2-h) was considerably higher than isolated Pd and Fe particles. For groundwater, in a single pass of Pd/Fe-PMAA-PVDF membranes (0.5 wt% Pd), chlorinated organics, such as trichloroethylene (177 ppb) and carbon tetrachloride (35 ppb), were degraded to 16 and 0.3 ppb, respectively, at 2.2 seconds of residence time. The degradation rate (observed ksa) followed the order of carbon tetrachloride > trichloroethylene > tetrachloroethylene > chloroform. A 36 h continuous flow study with organic mixture and the regeneration process show the potential for on-site remediation.
Collapse
Affiliation(s)
- Hongyi Wan
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506-0046, USA
| | - Md Saiful Islam
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506-0046, USA
| | - Nicolas J Briot
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506-0046, USA
| | | | - Lucy Pacholik
- Department of Civil Engineering University of Kentucky, Lexington, KY, 40506-0046, USA
| | - Lindell Ormsbee
- Department of Civil Engineering University of Kentucky, Lexington, KY, 40506-0046, USA
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506-0046, USA
| |
Collapse
|
13
|
Zhang Z, Huang L, Wang Y, Yang K, Du Y, Wang Y, Kipper MJ, Belfiore LA, Tang J. Theory and simulation developments of confined mass transport through graphene-based separation membranes. Phys Chem Chem Phys 2020; 22:6032-6057. [DOI: 10.1039/c9cp05551g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The perspectives of graphene-based membranes based on confined mass transport from simulations and experiments for water desalination.
Collapse
Affiliation(s)
- Zhijie Zhang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Linjun Huang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yanxin Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Kun Yang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yingchen Du
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yao Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Laurence A. Belfiore
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Jianguo Tang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| |
Collapse
|
14
|
Cho KM, Lee HJ, Nam YT, Kim YJ, Kim C, Kang KM, Ruiz Torres CA, Kim DW, Jung HT. Ultrafast-Selective Nanofiltration of an Hybrid Membrane Comprising Laminated Reduced Graphene Oxide/Graphene Oxide Nanoribbons. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27004-27010. [PMID: 31276358 DOI: 10.1021/acsami.9b09037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, reduced graphene oxide (rGO) and graphene oxide nanoribbons (GONRs) are used to fabricate a composite membrane that exhibits ultrafast water permeance (312.8 L m-2 h-1 bar-1) and precise molecular separation (molecular weight cutoff: 269 Da), which surpass the upper bound of previously reported polymer and graphene-based nanofiltration membranes. As two-dimensional GONR exhibits a width on the scale of nanometers, its nanochannels can be enlarged without hindering the stacking of rGO. Moreover, abundant oxygen-containing groups on the edge and surface of GONR enhance the electrostatic interactions between the filtered molecules and the membrane nanochannel. By the synergistic effect, rejection and water flux are considerably increased. Owing to the chemically stable nature of rGO, the composite membrane is highly stable in aqueous media (from acidic to alkaline) and is recyclable during repeated filtration tests.
Collapse
Affiliation(s)
- Kyeong Min Cho
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Hyeong-Jin Lee
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Yoon Tae Nam
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Yong-Jae Kim
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Chansol Kim
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Kyoung Min Kang
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Claudio Adrian Ruiz Torres
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Dae Woo Kim
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Hee-Tae Jung
- Department of Chemical and Biomolecular Engineering & KAIST Institute of Nanocentury , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| |
Collapse
|
15
|
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.
Collapse
|
16
|
Yang K, Huang LJ, Wang YX, Du YC, Tang JG, Wang Y, Cheng MM, Zhang Y, Kipper MJ, Belfiore LA, Wickramasinghe SR. Graphene oxide/nanometal composite membranes for nanofiltration: synthesis, mass transport mechanism, and applications. NEW J CHEM 2019. [DOI: 10.1039/c8nj06045b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We reviewed the recent developments in graphene-based composite membranes and discussed their challenges in this paper.
Collapse
|