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Yan T, Pan H, Liu Z, Kang P. Phase-Inversion Induced 3D Electrode for Direct Acidic Electroreduction CO 2 to Formic acid. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207650. [PMID: 36890777 DOI: 10.1002/smll.202207650] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/10/2023] [Indexed: 06/08/2023]
Abstract
Direct electrochemical CO2 reduction to formic acid (FA) instead of formate is a challenging task due to the high acidity of FA and competitive hydrogen evolution reaction. Herein, 3D porous electrode (TDPE) is prepared by a simple phase inversion method, which can electrochemically reduce CO2 to FA in acidic conditions. Owing to interconnected channels, high porosity, and appropriate wettability, TDPE not only improves mass transport, but also realizes pH gradient to build higher local pH micro-environment under acidic conditions for CO2 reduction compared with planar electrode and gas diffusion electrode. Kinetic isotopic effect experiments demonstrate that the proton transfer becomes the rate-determining step at the pH of 1.8; however, not significant in neutral solution, suggesting that the proton is aiding the overall kinetics. Maximum FA Faradaic efficiency of 89.2% has been reached at pH 2.7 in a flow cell, generating FA concentration of 0.1 m. Integrating catalyst and gas-liquid partition layer into a single electrode structure by phase inversion method paves a facile avenue for direct production of FA by electrochemical CO2 reduction.
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Affiliation(s)
- Tao Yan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Hui Pan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhikun Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Peng Kang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
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Shi J, Zhou J, Fan D, Lin T, Wang J, Zhao J, Ronen A, Li M, You J. Enhanced Separation Performance of Hierarchically Porous Membranes Fabricated via the Combination of Crystallization Template and Foaming. Polymers (Basel) 2022; 14:5160. [PMID: 36501557 PMCID: PMC9736639 DOI: 10.3390/polym14235160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022] Open
Abstract
In this work, poly (vinylidene fluoride) (PVDF) hierarchically porous membranes (HPMs) with isolated large pores and continuous narrow nano-pores have been fabricated from its blend with poly (methyl methacrylate) (PMMA) based on the combination of crystallization template with chemical or supercritical CO2 foaming. On the one hand, the decomposition of azodicarbonamide (ADC, chemical foaming agent) or the release of CO2 can produce isolated large pores. On the other hand, PMMA is expelled during the isothermal crystallization of PVDF in their miscible blend, yielding narrow nano-pores upon etching with a selective solvent. In the case of supercritical CO2, the attained PVDF HPMs fail to improve separation performance because of the compact wall of isolated-large-pore and consequent poor connectivity of hierarchical pores. In the case of ADC, the optimal HPM exhibits much higher flux (up to 20 times) without any loss of selectivity compared with the reference only with nano-pores. The enhanced permeability can be attributed to the shorter diffusion length and lower diffusion barrier from isolated large pores, while the comparable selectivity is determined by narrow nano-pores in THE matrix.
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Affiliation(s)
- Jiahui Shi
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiahai Zhou
- Zhejiang Chuanhua Chemical Group Co., Ltd., Hangzhou 311215, China
| | - Donglei Fan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Taotao Lin
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiayao Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiaqi Zhao
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Avner Ronen
- Jacob Blaustein Inst Desert Res, Zuckerberg Inst Water Res, Sede Boqer Campus, Ben Gurion Univ Negev, Beer Sheva IL-84990, Israel
| | - Minggang Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jichun You
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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Ouyang Y, Otitoju TA, Jiang D, Li S, Shoparwe NF, Wang S, Zhang A. Synthesis of
PVDF‐B
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C
mixed matrix membrane for ultrafiltration of protein and photocatalytic dye removal. J Appl Polym Sci 2022. [DOI: 10.1002/app.51663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuanyuan Ouyang
- School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Tunmise Ayode Otitoju
- School of Materials Science and Engineering Shenyang University of Technology Shenyang China
- Faculty of Bioengineering and Technology, Jeli Campus Universiti Malaysia Kelantan Jeli Malaysia
| | - Dafu Jiang
- School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Sanxi Li
- School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Noor Fazliani Shoparwe
- Faculty of Bioengineering and Technology, Jeli Campus Universiti Malaysia Kelantan Jeli Malaysia
| | - Song Wang
- School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Ailing Zhang
- School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
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Shoparwe NF, Kee LC, Otitoju TA, Shukor H, Zainuddin N, Makhtar MMZ. Removal of Humic Acid Using 3-Methacryloxypropyl Trimethoxysilane Functionalized MWCNT Loaded TiO 2/PES Hybrid Membrane. MEMBRANES 2021; 11:721. [PMID: 34564538 PMCID: PMC8470582 DOI: 10.3390/membranes11090721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/03/2021] [Accepted: 09/14/2021] [Indexed: 11/17/2022]
Abstract
In the present work, a highly efficient mixed matrix membrane (MMM) for humic acid (HA) removal was developed. Multiwalled carbon nanotubes (MWCNTs) were functionalized in the presence of 3-methacryloxypropyl trimethoxysilane using the co-condensation method and were subsequently loaded with TiO2 (prepared via the sol-gel route). The as-prepared material was then incorporated into a PES polymer solution to prepare a fMWCNT-TiO2/PES hybrid membrane via non-solvent induced phase inversion. The microstructure of the membrane was characterized using Fourier transform infrared spectroscopy, atomic force microscopy, scanning electron microscopy, water contact angle, thickness, porosity, and pore size. The fMWCNT-TiO2/PES hybrid membrane was tested for the removal of HA and antifouling performance. The results show that the surface hydrophilicity of the membranes was greatly improved upon the addition of the fMWCNT-TiO2 particles. The results show that 92% of HA was effectively removed after 1 h of filtration. In comparison with pristine membrane, the incorporation of fMWCNT-TiO2 nanoparticles led to enhanced pure water flux (99.05 L/m2 h), permeate flux (62.01 L/m2 h), higher HA rejection (92%), and antifouling improvement (RFR: 37.40%, FRR: 86.02%). Thus, the fMWCNT-TiO2/PES hybrid membrane is considered to be a great potential membrane for the improvement of ultrafiltration membranes.
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Affiliation(s)
- Noor Fazliani Shoparwe
- Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli 17600, Kelantan, Malaysia; (N.F.S.); (L.-C.K.); (T.A.O.)
| | - Lim-Cee Kee
- Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli 17600, Kelantan, Malaysia; (N.F.S.); (L.-C.K.); (T.A.O.)
| | - Tunmise Ayode Otitoju
- Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli 17600, Kelantan, Malaysia; (N.F.S.); (L.-C.K.); (T.A.O.)
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
| | - Hafiza Shukor
- Centre of Excellence For Biomass Utilization (CoEBU), Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia;
| | - Nor’Izzah Zainuddin
- Indah Water Konsortium, Lorong Perda Utama 13, Bukit Mertajam 14300, Pulau Pinang, Malaysia;
| | - Muaz Mohd Zaini Makhtar
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Gelugor 11800, Pulau Pinang, Malaysia
- Fellow of Center for Global Sustainability Studies, Universiti Sains Malaysia, Gelugor 11800, Pulau Pinang, Malaysia
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Abstract
TiO2 is a semiconductor material with high chemical stability and low toxicity. It is widely used in the fields of catalysis, sensing, hydrogen production, optics and optoelectronics. However, TiO2 photocatalyst is sensitive to ultraviolet (UV) light; this is why its photocatalytic activity and quantum efficiency are reduced. To enhance the photocatalytic efficiency in the visible light range as well as to increase the number of the active sites on the crystal surface or inhibit the recombination rate of photogenerated electron–hole pairs electrons, various metal ions were used to modify TiO2. This review paper comprehensively summarizes the latest progress on the modification of TiO2 photocatalyst by a variety of metal ions. Lastly, the future prospects of the modification of TiO2 as a photocatalyst are proposed.
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Zhang S, Yuan H, Wang C, Liu X, Lu J. Antifouling performance enhancement of polyethersulfone ultrafiltration membrane through increasing charge‐loading capacity over Prussian blue nanoparticles. J Appl Polym Sci 2020. [DOI: 10.1002/app.49410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuai Zhang
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Haikuan Yuan
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Chengcong Wang
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Xiaodi Liu
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Jie Lu
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
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Mulyati S, Muchtar S, Arahman N, Meirisa F, Syamsuddin Y, Zuhra Z, Rosnelly CM, Shamsuddin N, Mat Nawi NI, Wirzal MDH, Bilad MR, Takagi R, Matsuyama H. One-Pot Polymerization of Dopamine as an Additive to Enhance Permeability and Antifouling Properties of Polyethersulfone Membrane. Polymers (Basel) 2020; 12:E1807. [PMID: 32806565 PMCID: PMC7464200 DOI: 10.3390/polym12081807] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 11/16/2022] Open
Abstract
This paper reports the fabrication of polyethersulfone membranes via in situ hydrogen peroxide-assisted polymerization of dopamine. The dopamine and hydrogen peroxide were introduced into the dope solution where the polymerization occurred, resulting in a single-step additive formation during membrane fabrication. The effectivity of modification was evaluated through characterizations of the resulting membranes in terms of chemical functional groups, surface morphology, porosity, contact angle, mechanical strength and filtration of humic acid solution. The results confirm that the polydopamine was formed during the dope solution mixing through peroxide-assisted polymerization as proven by the appearance of peaks associated OH and NH groups in the resulting membranes. The presence of polydopamine residual in the membrane matric enhances the pore properties in terms of size and porosity (by a factor of 10), and by lowering the hydrophilicity (from 69° to 53°) which leads to enhanced filtration flux of up to 217 L/m2 h. The presence of the residual polydopamine also enhances membrane surface hydrophilicity which improve the antifouling properties as shown from the flux recovery ratio of > 80%.
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Affiliation(s)
- Sri Mulyati
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Syawaliah Muchtar
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Nasrul Arahman
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Friska Meirisa
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Yanna Syamsuddin
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Zuhra Zuhra
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Cut Meurah Rosnelly
- Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia; (S.M.); (N.A.); (F.M.); (Y.S.); (Z.Z.); (C.M.R.)
| | - Norazanita Shamsuddin
- Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link BE1410, Brunei;
| | - Normi Izati Mat Nawi
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, Malaysia; (N.I.M.N.); (M.D.H.W.); (M.R.B.)
| | - Mohd Dzul Hakim Wirzal
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, Malaysia; (N.I.M.N.); (M.D.H.W.); (M.R.B.)
| | - Muhammad Roil Bilad
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, Malaysia; (N.I.M.N.); (M.D.H.W.); (M.R.B.)
| | - Ryosuke Takagi
- Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Rokkodai-Cho 1-1, Nadaku, Kobe 657-8501, Japan; (R.T.); (H.M.)
| | - Hideto Matsuyama
- Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Rokkodai-Cho 1-1, Nadaku, Kobe 657-8501, Japan; (R.T.); (H.M.)
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Lv E, Ding S, Lu J, Li Z, Du L, Zhang S, Ding J. Response Surface Methodology Optimization and Kinetic Study of Ultrafiltration-Enhanced, SCER-catalyzed Hydrolysis of Lard. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2019. [DOI: 10.1515/ijcre-2018-0241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The integration process of polyethersulphone (PES) ultrafiltration with catalytic hydrolysis of lard was optimized by response surface methodology (RSM). The influences of molar ratio of water to lard, reaction time and transmembrane pressure on the fatty acids (FAs) yield were investigated. Results showed that the maximum FAs yield of 99.52 % was obtained under the optimized conditions of molar ratio of water to lard of 6.0:1.0, reaction time of 10.0 h and transmembrane pressure of 100.0 kPa. Moreover, the membrane cleaning efficiency was studied after four cleanings. Furthermore, the kinetic model of membrane separation process was investigated and the activation energy and pre-exponential factor were determined.
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Dynamic modelling and experimental validation of CO2 removal using hydrophobic membrane contactor with different types of absorbent. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.03.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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