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1
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Yamamoto K. Development of reverse osmosis membranes by incorporating polyhedral oligomeric silsesquioxanes (POSSs). Polym J 2022. [DOI: 10.1038/s41428-022-00668-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang D, Kanezashi M, Tsuru T, Yamamoto K, Gunji T, Adachi Y, Ohshita J. Development of Highly Water-Permeable Robust PSQ-Based RO Membranes by Introducing Hydroxyethylurea-Based Hydrophilic Water Channels. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21426-21435. [PMID: 35486525 DOI: 10.1021/acsami.2c01469] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Copolymerization of bis[3-(triethoxysilyl)propyl]amine (BTESPA) and N-(2-hydroxyethyl)-N'-[3-(triethoxysilyl)propyl]urea (HETESPU) provided highly permeable robust reverse osmosis (RO) membranes that have an organically bridged polysilsesquioxane (PSQ) structure. The RO experiments with NaCl aqueous solution (2000 ppm) indicated that the introduction of hydroxyethylurea groups markedly improved the permeability of water (1.86 × 10-12 m3/m2sPa) to approximately 19 times higher than that of a membrane prepared via the BTESPA homopolymerization, with NaCl rejection remaining nearly unchanged (96%). This is the highest water permeability obtained so far for PSQ-based membranes that show higher than 90% NaCl rejection. The improvement of water permeability is likely due to aggregation through hydrogen bonding in the PSQ layer, which can be regarded as a hydrophilic water channel.
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Affiliation(s)
- Dian Zhang
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima739-8527, Japan
| | - Masakoto Kanezashi
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima739-8527, Japan
| | - Toshinori Tsuru
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima739-8527, Japan
| | - Kazuki Yamamoto
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Chiba278-8510, Japan
| | - Takahiro Gunji
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Chiba278-8510, Japan
| | - Yohei Adachi
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima739-8527, Japan
| | - Joji Ohshita
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima739-8527, Japan
- Division of Materials Model-Based Research, Digital Monozukuri (Manufacturing) Education and Research Center, Hiroshima University, Higashi-Hiroshima739-0046, Japan
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Development of PSQ-RO membranes with high water permeability by copolymerization of bis[3-(triethoxysilyl)propyl]amine and triethoxy(3-glycidyloxypropyl)silane. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120162] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Controlling pore structures of Pd-doped organosilica membranes by calcination atmosphere for gas separation. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.03.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang D, Ohshita J. Preparation of robust RO membranes for water desalination by interfacial copolymerization of bis[(triethoxysilyl)propyl]amine and bis(triethoxysilyl)ethane. Polym J 2019. [DOI: 10.1038/s41428-019-0239-7] [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]
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Yamamoto K, Muragishi H, Mizumo T, Gunji T, Kanezashi M, Tsuru T, Ohshita J. Diethylenedioxane-bridged microporous organosilica membrane for gas and water separation. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.06.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zheng FT, Yamamoto K, Kanezashi M, Gunji T, Tsuru T, Ohshita J. Preparation of Hybrid Organosilica Reverse Osmosis Membranes by Interfacial Polymerization of Bis[(trialkoxysilyl)propyl]amine. CHEM LETT 2018. [DOI: 10.1246/cl.180525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Feng-Tao Zheng
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Kazuki Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Takahiro Gunji
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Joji Ohshita
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Preparation of bridged silica RO membranes from copolymerization of bis(triethoxysilyl)ethene/(hydroxymethyl)triethoxysilane. Effects of ethenylene-bridge enhancing water permeability. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.10.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yamamoto K, Koge S, Sasahara K, Mizumo T, Kaneko Y, Kanezashi M, Tsuru T, Ohshita J. Preparation of Bridged Polysilsesquioxane Membranes from Bis[3-(triethoxysilyl)propyl]amine for Water Desalination. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170153] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kazuki Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510
| | - Sayako Koge
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
| | - Kenji Sasahara
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
| | - Tomonobu Mizumo
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
| | - Yoshiro Kaneko
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Korimoto, Kagoshima 890-0065
| | - Masakoto Kanezashi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
| | - Toshinori Tsuru
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
| | - Joji Ohshita
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527
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Yamamoto K, Kanezashi M, Tsuru T, Ohshita J. Preparation of bridged polysilsesquioxane-based membranes containing 1,2,3-triazole moieties for water desalination. Polym J 2017. [DOI: 10.1038/pj.2016.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Chang XH, Liu ZL, Luo YC, Yang C, Liu XW, Da BC, Li JJ, Ahmad T, Loh TP, Xu YH. Copper-catalyzed silylation reactions of propargyl epoxides: easy access to 2,3-allenols and stereodefined alkenes. Chem Commun (Camb) 2017; 53:9344-9347. [DOI: 10.1039/c7cc04588c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Efficient silylation reactions of propargyl epoxides catalyzed by copper catalysts have been developed.
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Affiliation(s)
- Xi-Hao Chang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Zheng-Li Liu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Yun-Cheng Luo
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Chao Yang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Xiao-Wei Liu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Bing-Chao Da
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Jie-Jun Li
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Tanveer Ahmad
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Teck-Peng Loh
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
- Institute of Advanced Synthesis
| | - Yun-He Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
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