1
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Preparation of nanocomposite aromatic polyamide reverse osmosis membranes by in-situ polymerization of bis(triethoxysilyl)ethane (BTESE). J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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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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3
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Li JY, Wang DK, Lin YT, Wey MY, Tseng HH. Homogeneous sub-nanophase network tailoring of dual organosilica membrane for enhancing CO2 gas separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120170] [Citation(s) in RCA: 4] [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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4
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Enhancing dehydration performance of isopropanol for flexible hybrid silica composite membranes with spray-coated active layer on polymers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Hamada T, Nakanishi Y, Okada K, Ohshita J. Crack- and Shrinkage-Free Ethylene-Bridged Polysilsesquioxane Film Prepared by a Hydrosilylation Reaction. ACS OMEGA 2021; 6:8430-8437. [PMID: 33817503 PMCID: PMC8015123 DOI: 10.1021/acsomega.1c00183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
With the aim of developing an improved strategy for the preparation of ethylene-bridged polysilsesquioxanes as thermal insulator materials, this paper describes the synthesis of a crack- and shrinkage-free ethylene-bridged polysilsesquioxane film by the hydrosilylation reaction of hydrodimethyl-silylated oligomethylsilsesquioxane (MSQ-SiH) and dimethylvinyl-silylated oligomethylsilsesquioxane (MSQ-SiVi) in the presence of Karstedt's catalyst. Polysilsesquioxane precursors were prepared by the sol-gel reaction of triethoxymethylsilane and the successive capping reaction with chlorodimethylsilane and chlorodimethylvinylsilane. The obtained ethylene-bridged polysilsesquioxane film showed lower density and thermal diffusivity (1.13 g/cm3 and 1.15 × 10-7 m2/s, respectively) than a polymethylsilsesquioxane film (1.34 g/cm3 and 1.36 × 10-7 m2/s, respectively). As a result of the introduction of the SiCCSi ethylene bridge, the thermal insulation property of the polysilsesquioxane film was enhanced.
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Affiliation(s)
- Takashi Hamada
- Collaborative
Research Laboratory, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Yuki Nakanishi
- Technical
Research Center, Mazda Motor Corporation, 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima 730-8670, Japan
- Applied
Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Kenta Okada
- Collaborative
Research Laboratory, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
- Technical
Research Center, Mazda Motor Corporation, 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima 730-8670, Japan
| | - Joji Ohshita
- Collaborative
Research Laboratory, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
- Applied
Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
- Division
of Materials Model-Based Research, Digital Monozukuri (Manufacturing)
Education and Research Center, Hiroshima
University, 3-10-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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6
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Zhao Y, Zhou C, Kong C, Chen L. Ultrathin Reduced Graphene Oxide/Organosilica Hybrid Membrane for Gas Separation. JACS AU 2021; 1:328-335. [PMID: 34467296 PMCID: PMC8395671 DOI: 10.1021/jacsau.0c00073] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Indexed: 06/13/2023]
Abstract
Here, reduced graphene oxide (r-GO) nanosheets were embedded in an organosilica network to assemble an ultrathin hybrid membrane on the tubular ceramic substrate. With the organosilica nanocompartments inside the r-GO stacks and the intensified polymerization, r-GO sheets endow the as-prepared hybrid membranes with high H2 and CO2 separation performance. The resulting selectivities of H2/CH4 and CO2/CH4 are found to be 223 and 55, respectively, together with gas permeance of approximately 2.5 × 10-7 mol·m-2·s-1·Pa-1 for H2 and 6.1 × 10-8 mol·m-2·s-1·Pa-1 for CO2 at room temperature and 0.2 MPa. To separate larger molecules from H2, the H2/C3H8 and H2/i-C4H10 selectivities are as high as 1775 and 2548, respectively. Moreover, at 150 °C and 0.2 MPa, the hybrid membrane retains high separation performances with ideal selectivities higher than 200 and 30 for H2/CH4 and CO2/CH4, respectively, which are attractive for gas separation and purification of practical applications.
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7
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Yamamoto K, Saito I, Amaike Y, Nakaya T, Ohshita J, Gunji T. Preparation and water desalination properties of bridged polysilsesquioxane membranes with divinylbenzene and divinylpyridine units. Polym J 2020. [DOI: 10.1038/s41428-020-0386-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Inoue R, Kanezashi M, Nagasawa H, Yamamoto K, Gunji T, Tsuru T. Pore size tuning of bis(triethoxysilyl)propane (BTESP)-derived membrane for gas separation: Effects of the acid molar ratio in the sol and of the calcination temperature. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116742] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Pore subnano-environment engineering of organosilica membranes for highly selective propylene/propane separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.117999] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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A review on thermally stable membranes for water treatment: Material, fabrication, and application. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116223] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Permeation Properties of Ions through Inorganic Silica-Based Membranes. MEMBRANES 2020; 10:membranes10020027. [PMID: 32046234 PMCID: PMC7074570 DOI: 10.3390/membranes10020027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 11/30/2022]
Abstract
The development of inorganic membranes has mainly found applicability in liquid separation technologies. However, only a few reports cite the permeation and separation of liquids through inorganic nanofiltration membranes compared with the more popular microfiltration membranes. Herein, we prepared silica membranes using 3,3,3-trifluoropropyltrimethoxysilane (TFPrTMOS) to investigate its liquid permeance performance using four different ion solutions (i.e., NaCl, Na2SO4, MgCl2, and MgSO4). The TFPrTMOS-derived membranes were deposited above a temperature of 175 °C, where the deposition behavior of TFPrTMOS was dependent on the organic functional groups decomposition temperature. The highest membrane rejection was from NaCl at 91.0% when deposited at 200 °C. For anions, the SO42− rejections were the greatest. It was also possible to separate monovalent and divalent anions, as the negatively charged groups on the membrane surfaces retained pore sizes >1.48 nm. Ions were also easily separated by molecular sieving below a pore size of 0.50 nm. For the TFPrTMOS-derived membrane deposited at 175 °C, glucose showed 67% rejection, which was higher than that achieved through the propyltrimethoxysilane membrane. We infer that charge exclusion might be due to the dissociation of hydroxyl groups resulting from decomposition of organic groups. Pore size and organic functional group decomposition were found to be important for ion permeation.
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12
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Ren X, Tsuru T. Organosilica-Based Membranes in Gas and Liquid-Phase Separation. MEMBRANES 2019; 9:membranes9090107. [PMID: 31443501 PMCID: PMC6780740 DOI: 10.3390/membranes9090107] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/17/2019] [Accepted: 08/20/2019] [Indexed: 11/16/2022]
Abstract
Organosilica membranes are a type of novel materials derived from organoalkoxysilane precursors. These membranes have tunable networks, functional properties and excellent hydrothermal stability that allow them to maintain high levels of separation performance for extend periods of time in either a gas-phase with steam or a liquid-phase under high temperature. These attributes make them outperform pure silica membranes. In this review, types of precursors, preparation method, and synthesis factors for the construction of organosilica membranes are covered. The effects that these factors exert on characteristics and performance of these membranes are also discussed. The incorporation of metals, alkoxysilanes, or other functional materials into organosilica membranes is an effective and simple way to improve their hydrothermal stability and achieve preferable chemical properties. These hybrid organosilica membranes have demonstrated effective performance in gas and liquid-phase separation.
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Affiliation(s)
- Xiuxiu Ren
- Jiangsu Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Toshinori Tsuru
- Separation Engineering Laboratory, Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan.
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13
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Ishii K, Ikeda A, Takeuchi T, Yoshiura J, Nomura M. Silica-Based RO Membranes for Separation of Acidic Solution. MEMBRANES 2019; 9:membranes9080094. [PMID: 31374961 PMCID: PMC6723749 DOI: 10.3390/membranes9080094] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/23/2019] [Accepted: 07/25/2019] [Indexed: 11/27/2022]
Abstract
The development of acid separation membranes is important. Silica-based reverse osmosis (RO) membranes for sulfuric acid (H2SO4) solution separation were developed by using a counter diffusion chemical vapor deposition (CVD) method. Diphenyldimethoxysilane (DPhDMOS) was used as a silica precursor. The deposited membrane showed the H2SO4 rejection of 81% with a total flux of 5.8 kg m−2 h−1 from the 10−3 mol L−1 of H2SO4. The γ-alumina substrate was damaged by the permeation of the H2SO4 solution. In order to improve acid stability, the silica substrates were developed. The acid stability was checked by the gas permeation tests after immersing in 1 mol L−1 of the H2SO4 solution for 24 h. The N2 permeance decreased by 11% with the acid treatment through the silica substrate, while the permeance decreased to 94% through the γ-alumina substrate. The flux and the rejection through the DPhDMOS-derived membrane on the silica substrate were stable in the 70 wt % H2SO4 solution.
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Affiliation(s)
- Katsunori Ishii
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
| | - Ayumi Ikeda
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Toshichika Takeuchi
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
| | - Junko Yoshiura
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
| | - Mikihiro Nomura
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan.
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14
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15
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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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16
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Acid post-treatment of sol-gel-derived ethylene-bridged organosilica membranes and their filtration performances. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.03.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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18
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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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19
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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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20
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Nakamura M, Shigeoka K, Adachi Y, Ooyama Y, Watase S, Ohshita J. Preparation of Dithienogermole-containing Polysilsesquioxane Films for Sensing Nitroaromatics. CHEM LETT 2017. [DOI: 10.1246/cl.161119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Organosilica bis(triethoxysilyl)ethane (BTESE) membranes for gas permeation (GS) and reverse osmosis (RO): The effect of preparation conditions on structure, and the correlation between gas and liquid permeation properties. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.12.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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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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23
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Evaluation of non-commercial ceramic SiO2-ZrO2 and organosilica BTESE membranes in a highly oxidative medium: Performance in hydrogen peroxide. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.08.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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24
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Gong G, Nagasawa H, Kanezashi M, Tsuru T. Tailoring the Separation Behavior of Polymer-Supported Organosilica Layered-Hybrid Membranes via Facile Post-Treatment Using HCl and HN3 Vapors. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11060-11069. [PMID: 27070105 DOI: 10.1021/acsami.6b01986] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A promising layered-hybrid membrane consisting of a microporous organosilica active layer deposited onto a porous polymer support was prepared via a facile sol-gel spin-coating process. Subsequently, the pore sizes and structures of the organosilica top layers on the membrane surface were tuned at mild temperature combined with vapor treatment from either hydrochloric acid (HVT) or ammonia (AVT), thereby tailoring the desalination performance of the membranes during reverse osmosis (RO) processing. The effects of HVT and AVT on the pore size, structure, and morphology of organosilica layers and on the separation performances of membranes were investigated in detail. We confirmed that both HVT and AVT processes accelerated the condensation of silanol (Si-OH) in the organosilica layer, which led to dense silica networks. The layered-hybrid membranes after HVT showed an improved salt rejection and reduced water flux, while membranes after AVT exhibited a decrease in both salt rejection and water permeability. We found that HVT gave rise to smoother and denser organosilica layers, while AVT produced large voids and formed pinholes due to Ostwald ripening. These conclusions were supported by a comparative analysis of the results obtained via FTIR, TG-MS, SPM, and RO desalination.
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Affiliation(s)
- Genghao Gong
- Department of Chemical Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Hiroki Nagasawa
- Department of Chemical Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
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25
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Singh G, Rani S. Organosilatranes with Acylthiourea Derivatives - Metal-Ion Binding, Substituent-Dependent Sensitivity, and Prospects for the Fabrication of Magnetic Hybrids. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Sunita Rani
- Department of Chemistry; Panjab University; 160014 Chandigarh India
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26
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Xu R, Lin P, Zhang Q, Zhong J, Tsuru T. Development of Ethenylene-Bridged Organosilica Membranes for Desalination Applications. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04439] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rong Xu
- Jiangsu Key Laboratory of Advanced
Catalytic Materials
and Technology, School of Petrochemical
Engineering, Changzhou University, Changzhou, 213164, China
| | - Peng Lin
- Jiangsu Key Laboratory of Advanced
Catalytic Materials
and Technology, School of Petrochemical
Engineering, Changzhou University, Changzhou, 213164, China
| | - Qi Zhang
- Jiangsu Key Laboratory of Advanced
Catalytic Materials
and Technology, School of Petrochemical
Engineering, Changzhou University, Changzhou, 213164, China
| | - Jing Zhong
- Jiangsu Key Laboratory of Advanced
Catalytic Materials
and Technology, School of Petrochemical
Engineering, Changzhou University, Changzhou, 213164, China
| | - Toshinori Tsuru
- Department
of Chemical Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
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27
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Yamamoto K, Ohshita J, Mizumo T, Kanezashi M, Tsuru T. Preparation of hydroxyl group containing bridged organosilica membranes for water desalination. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.10.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Ibrahim SM, Nagasawa H, Kanezashi M, Tsuru T. Robust organosilica membranes for high temperature reverse osmosis (RO) application: Membrane preparation, separation characteristics of solutes and membrane regeneration. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.06.060] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Reverse osmosis performance of layered-hybrid membranes consisting of an organosilica separation layer on polymer supports. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.07.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Nagasawa H, Minamizawa T, Kanezashi M, Yoshioka T, Tsuru T. Microporous organosilica membranes for gas separation prepared via PECVD using different O/Si ratio precursors. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.04.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Mizumo T, Muragishi H, Yamamoto K, Ohshita J, Kanezashi M, Tsuru T. Preparation and separation properties of oxalylurea-bridged silica membranes. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Tomonobu Mizumo
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Haruna Muragishi
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Kazuki Yamamoto
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Joji Ohshita
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Masakoto Kanezashi
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Toshinori Tsuru
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
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32
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Nishibayashi M, Yoshida H, Uenishi M, Kanezashi M, Nagasawa H, Yoshioka T, Tsuru T. Photo-induced sol–gel processing for low-temperature fabrication of high-performance silsesquioxane membranes for use in molecular separation. Chem Commun (Camb) 2015; 51:9932-5. [DOI: 10.1039/c5cc02997j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silsesquioxane (SQ) membranes derived from 3-methacryloxypropyltrimethoxysilane and bis(trimethoxysilyl)ethane were successfully fabricated at low temperature via photo-induced sol–gel processing.
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Affiliation(s)
- Mai Nishibayashi
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Hiroyuki Yoshida
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Masamoto Uenishi
- Toyohashi Corporate Research Laboratories
- Mitsubishi Rayon Co., Ltd
- Toyohashi 440-8601
- Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Hiroki Nagasawa
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Tomohisa Yoshioka
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
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Ren X, Kanezashi M, Nagasawa H, Tsuru T. Plasma-assisted multi-layered coating towards improved gas permeation properties for organosilica membranes. RSC Adv 2015. [DOI: 10.1039/c5ra08052e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Plasma treatment enhanced separation performance of multi-layered membranes consisting of a hydrophobic top-layer and hydrophobic intermediate-layer.
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Affiliation(s)
- Xiuxiu Ren
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Hiroki Nagasawa
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering
- Hiroshima University
- Higashi-Hiroshima
- Japan
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Gong G, Wang J, Nagasawa H, Kanezashi M, Yoshioka T, Tsuru T. Synthesis and characterization of a layered-hybrid membrane consisting of an organosilica separation layer on a polymeric nanofiltration membrane. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.08.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Gong G, Wang J, Nagasawa H, Kanezashi M, Yoshioka T, Tsuru T. Fabrication of a layered hybrid membrane using an organosilica separation layer on a porous polysulfone support, and the application to vapor permeation. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Xu R, Ibrahim SM, Kanezashi M, Yoshioka T, Ito K, Ohshita J, Tsuru T. New insights into the microstructure-separation properties of organosilica membranes with ethane, ethylene, and acetylene bridges. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9357-9364. [PMID: 24873373 DOI: 10.1021/am501731d] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Microporous organosilica membranes with ethane, ethylene, and acetylene bridges have been developed and the extensive microstructural characterization has been discussed in relation with separation properties of the membrane. The organosilica network structure and the membrane performances can be controlled by adjusting the flexibility, size, and electronic structure of the bridging groups. A relatively narrow size distribution was obtained for the novel acetylene-bridged sol by optimizing the sol synthesis. Incorporation of larger rigid bridges into organosilica networks resulted in a looser microstructure of the membrane, which was quantitatively evaluated by N2 sorption and positron annihilation lifetime (PAL) measurements. Molecular weight cutoff (MWCO) measurements indicated that the acetylene-bridged membrane had a larger effective separation pore size than ethane- and ethylene-bridged membranes, leading to a relatively low NaCl rejection in reverse osmosis. In quantum chemical calculations, a more open pore structure and increased polarization was observed for the acetylene-bridged networks, which led to a significant improvement in water permeability. The present study will offer new insight into design of high-performance molecular separation membranes.
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Affiliation(s)
- Rong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University , Changzhou 213164, China
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Ibrahim SM, Xu R, Nagasawa H, Naka A, Ohshita J, Yoshioka T, Kanezashi M, Tsuru T. Insight into the pore tuning of triazine-based nitrogen-rich organoalkoxysilane membranes for use in water desalination. RSC Adv 2014. [DOI: 10.1039/c4ra02772h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Variation of water ratio played an important role in the separation properties of TTESPT membranes in reverse osmosis applications.
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Affiliation(s)
- Suhaina M. Ibrahim
- Department of Chemical Engineering
- Hiroshima University
- Higashihiroshima, Japan
- Advanced Material Research Centre (AMREC)
- 09000 Kulim, Malaysia
| | - Rong Xu
- School of Petrochemical Engineering
- Changzhou University
- Changzhou, China
| | - Hiroki Nagasawa
- Department of Chemical Engineering
- Hiroshima University
- Higashihiroshima, Japan
| | - Akinobu Naka
- Department of Life Science
- Kurashiki University of Science and the Arts
- Kurashiki, Japan
| | - Joji Ohshita
- Department of Applied Chemistry
- Hiroshima University
- Higashihiroshima, Japan
| | - Tomohisa Yoshioka
- Department of Chemical Engineering
- Hiroshima University
- Higashihiroshima, Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering
- Hiroshima University
- Higashihiroshima, Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering
- Hiroshima University
- Higashihiroshima, Japan
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