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Xiang Y, Liu Z, Cheng Z. Cu +-Doped PVA-Derived Mesoporous Carbon@Diatomite Adsorbent for Selective Adsorption Desulfurization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14595-14604. [PMID: 37811633 DOI: 10.1021/acs.langmuir.3c01839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Herein, we successfully constructed a Cu+-doped PVA-derived mesoporous carbon@diatomite (DE) composite by virtue of N2-suffered carbonization and self-reduction at a high temperature. The structure and composition of C/Cu@DE composite adsorbents were determined by a series of characterizations. The results affirmed that Cu+ species are highly scattered in PVA-derived mesoporous carbon, which covered the DE surface. The effect of carbonization temperature on the structure and composition of the C/Cu@DE composite adsorbents were intensively investigated, indicating that the C/Cu@DE composite at an 800 °C carbonization temperature (C/Cu@DE-800 °C) showed the formation of many Cu+ species and preferable hierarchical pore properties. The adsorption experiments of benzothiophene (BT) indicated that C/Cu@DE-800 °C possessed a better adsorption capacity. The adsorption behavior of BT onto C/Cu@DE-800 °C was investigated by a variety of adsorption times, initial concentrations, and recycle times, of which the largest adsorption capacity for BT attained 34.2 mg/g. Furthermore, the adsorption kinetics, intraparticle diffusion, adsorption isotherms, and adsorption thermodynamics of BT onto C/Cu@DE-800 °C was deeply studied, which contributed to the proposed adsorption mechanism.
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Affiliation(s)
- Yang Xiang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zan Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zhilin Cheng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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Zhan X, Gao K, Jia Y, Deng W, Liu N, Guo X, Li H, Li J. Enhanced Desulfurization Performance of ZIF-8/PEG MMMs: Effect of ZIF-8 Particle Size. MEMBRANES 2023; 13:membranes13050515. [PMID: 37233576 DOI: 10.3390/membranes13050515] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023]
Abstract
Constructing efficient and continuous transport pathways in membranes is a promising and challenging way to achieve the desired performance in the pervaporation process. The incorporation of various metal-organic frameworks (MOFs) into polymer membranes provided selective and fast transport channels and enhanced the separation performance of polymeric membranes. Particle size and surface properties are strongly related to the random distribution and possible agglomeration of MOFs particles, which may lead to poor connectivity between adjacent MOFs-based nanoparticles and result in low-efficiency molecular transport in the membrane. In this work, ZIF-8 particles with different particle sizes were physically filled into PEG to fabricate mixed matrix membranes (MMMs) for desulfurization via pervaporation. The micro-structures and physi-/chemical properties of different ZIF-8 particles, along with their corresponding MMMs, were systematically characterized by SEM, FT-IR, XRD, BET, etc. It was found that ZIF-8 with different particle sizes showed similar crystalline structures and surface areas, while larger ZIF-8 particles possessed more micro-pores and fewer meso-/macro-pores than did the smaller particles. ZIF-8 showed preferential adsorption for thiophene rather than n-heptane molecules, and the diffusion coefficient of thiophene was larger than that of thiophene in ZIF-8, based on molecular simulation. PEG MMMs with larger ZIF-8 particles showed a higher sulfur enrichment factor, but a lower permeation flux than that found with smaller particles. This might be ascribed to the fact that larger ZIF-8 particles provided more and longer selective transport channels in one single particle. Moreover, the number of ZIF-8-L particles in MMMs was smaller than the number of smaller ones with the same particle loading, which might weaken the connectivity between adjacent ZIF-8-L nanoparticles and result in low-efficiency molecular transport in the membrane. Moreover, the surface area available for mass transport was smaller for MMMs with ZIF-8-L particles due to the smaller specific surface area of the ZIF-8-L particles, which might also result in lower permeability in ZIF-8-L/PEG MMMs. The ZIF-8-L/PEG MMMs exhibited enhanced pervaporation performance, with a sulfur enrichment factor of 22.5 and a permeation flux of 183.2 g/(m-2·h-1), increasing by 57% and 389% compared with the results for pure PEG membrane, respectively. The effects of ZIF-8 loading, feed temperature, and concentration on desulfurization performance were also studied. This work might provide some new insights into the effect of particle size on desulfurization performance and the transport mechanism in MMMs.
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Affiliation(s)
- Xia Zhan
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Kaixiang Gao
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Yucheng Jia
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Wen Deng
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Ning Liu
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Xuebin Guo
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Hehe Li
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Jiding Li
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Zhan X, Ge R, Yao S, Lu J, Sun X, Li J. Enhanced pervaporation performance of PEG membranes with synergistic effect of cross-linked PEG and porous MOF-508a. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122347] [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]
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Zhan X, Zhao X, Ge R, Gao Z, Wang L, Sun X, Li J. Constructing high-efficiency transport pathways via incorporating DP-POSS into PEG membranes for pervaporative desulfurization. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Emerging membranes for separation of organic solvent mixtures by pervaporation or vapor permeation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Le Q, Xiang Y, Liu Z, Cheng Z. High mechanical performance submicron-sized Cu2O-derived necklace-shaped PAN nanofiber composite membrane towards adsorption desulfurization application. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Leng X, Wang M, Hou Y. Fabrication of a high-performance polyurethane pervaporation membrane via surface grafting of silane coupling agent. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02970-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li T, Wang Y, Wang X, Cheng C, Zhang K, Yang J, Han G, Wang Z, Wang X, Wang L. Desalination Characteristics of Cellulose Acetate FO Membrane Incorporated with ZIF-8 Nanoparticles. MEMBRANES 2022; 12:122. [PMID: 35207046 PMCID: PMC8877917 DOI: 10.3390/membranes12020122] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 02/06/2023]
Abstract
Forward osmosis membranes have a wide range of applications in the field of water treatment. However, the application of seawater desalination is restricted, so the research of forward osmosis membranes for seawater desalination poses new challenges. In this study, zeolitic imidazolate framework-8 (ZIF-8) was synthesized by a mechanical stirring method, and its crystal structure, surface morphology, functional group characteristics, thermochemical stability, pore size distribution and specific surface area were analyzed. The cellulose acetate (CA)/ZIF-8 mixed matrix forward osmosis membrane was prepared by using the synthesized ZIF-8 as a modified additive. The effects of the additive ZIF-8 content, coagulation bath temperature, mixing temperature and heat treatment temperature on the properties of the CA/ZIF-8 forward osmosis membrane were systematically studied, and the causes were analyzed to determine the best membrane preparation parameters. The structure of the CA membrane and CA/ZIF-8 mixed matrix forward osmosis membranes prepared under the optimal conditions were characterized by Fourier Transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), contact angle and Atomic force microscope (AFM). Finally, the properties of the HTI membrane (Membrane manufactured by Hydration Technology Innovations Inc.), CA forward osmosis membrane and CA/ZIF-8 mixed matrix forward osmosis membrane were compared under laboratory conditions. For the CA membrane, the water flux and reverse salt flux reached 48.85 L·m-2·h-1 and 3.4 g·m-2·h-1, respectively. The reverse salt flux and water flux of the CA/ZIF-8 membrane are 2.84 g·m-2·h-1 and 50.14 L·m-2·h-1, respectively. ZIF-8 has a promising application in seawater desalination.
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Affiliation(s)
- Tong Li
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Yuhong Wang
- National Center of Ocean Standards and Metrology, Tianjin 300112, China;
| | - Xinyan Wang
- Shandong Zhaojin Motian Co., Ltd., Zhaoyuan 265400, China;
| | - Caixia Cheng
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Kaifeng Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Jie Yang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Guangshuo Han
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Zhongpeng Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
| | - Xiuju Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, China
| | - Liguo Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; (T.L.); (C.C.); (K.Z.); (J.Y.); (G.H.); (Z.W.)
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Zhu X, Pan Z, Jiang H, Du Y, Chen R. Hierarchical Pd/UiO-66-NH2-SiO2 nanofibrous catalytic membrane for highly efficient removal of p-nitrophenol. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119731] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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