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Vainrot N, Li M, Isloor AM, Eisen MS. New Preparation Methods for Pore Formation on Polysulfone Membranes. MEMBRANES 2021; 11:membranes11040292. [PMID: 33919598 PMCID: PMC8073563 DOI: 10.3390/membranes11040292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/29/2021] [Accepted: 04/14/2021] [Indexed: 11/16/2022]
Abstract
This work described the preparation of membranes based on aromatic polysulfones through the phase-inversion method induced by a nonsolvent, generating the phase separation (NIPS) process. Three new techniques, including the nano iron acid etching method, base hydrolysis method of crosslinked polymers, and base hydrolysis method of a reactive component in a binary polymer blend, were developed for pore creation on membranes. The modified polymers and obtained membranes were carefully characterized. The uniform pores were successfully created by base hydrolysis of the crosslinked polymers and obtained at the size of the crosslinker. Moreover, homogeneous pores were created after base hydrolysis of the membranes prepared from binary polymer blends due to the internal changes in the polymer structure. The separation performance of membranes was tested with different inorganic salt solutions and compared with commercially known membranes. These new membranes exhibited high water flux (up to 3000 L/m-2·h-1 at 10 bar and at 25 °C) and reasonable rejections for monovalent (21-44%) and multivalent ions (18-60%), depending on the different etching of the hydrolysis times. The comparison of these membranes with commercial ones confirmed their good separation performance and high potential application for water treatment applications.
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Affiliation(s)
- Natalia Vainrot
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel; (N.V.); (A.M.I.)
| | - Mingyuan Li
- Department of Chemistry, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China;
| | - Arun M. Isloor
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel; (N.V.); (A.M.I.)
- Membrane and Separation Technology Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Mangalore 575 025, India
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel; (N.V.); (A.M.I.)
- Department of Chemistry, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China;
- Correspondence:
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Lin J, Zhao L, Zheng Y, Xiao Y, Yu G, Zheng Y, Chen W, Jiang L. Facile Strategy to Extend Stability of Simple Component-Alumina-Supported Palladium Catalysts for Efficient Methane Combustion. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56095-56107. [PMID: 33263398 DOI: 10.1021/acsami.0c18188] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
It is of practical importance to develop a stable and accessible methane combustion catalyst which could retain an excellent activity under drastic conditions. Herein, we introduce a facile approach to extend the stability of conventional Pd/Al2O3 catalysts through tailoring the pore size of mesoporous aluminas (MAs) and the interaction between Pd and Al. By modulating the addition of templates (deoxycholic acid and polyvinylpyrrolidone), a series of MAs with tunable and uniform pore size were obtained through a designed sol-gel method. Unexpectedly, Pd/MA-800-5 catalyst prepared with relatively large pore size (ca. 12 nm) MAs exhibited an efficient and sustained performance under a variety of operating conditions, while those prepared with small pore size (ca. 5-7 nm) MAs suffered from a significant loss of activity during high temperature cyclic reactions (280-850 °C) due to the decomposition of confined PdO. The enhancement could be attributed to the suitable particle size, higher crystallinity, generated active sites, improved reducibility, and thermal stability of PdO species. Moreover, the variation of pore size also resulted in a different reaction mechanism. Such a pore size promotion strategy effectively invoked a superior catalytic performance while keeping the catalyst components simple, which can be extended to prepare other high-performance metal oxide-supported catalysts for catalytic applications.
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Affiliation(s)
- Jia Lin
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Lusi Zhao
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P. R. China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P. R. China
| | - Guangtao Yu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Ying Zheng
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Wei Chen
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P. R. China
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Yu F, Bi S, Liu T, Pan D, Chen S, Yan X, Fan B, Li R. Synthesis of Ordered Mesoporous Zr-Al Composite Oxides with Excellent Structural and Textural Properties and Extremely High Stability. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3036. [PMID: 32645947 PMCID: PMC7372406 DOI: 10.3390/ma13133036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/28/2020] [Accepted: 07/03/2020] [Indexed: 11/16/2022]
Abstract
Ordered mesoporous Zr-Al composite oxide materials (denoted as OMZA-x) with different Zr contents have been synthesized by a solvent evaporation-inducing self-assembly procedure associated with a thermal treatment at 100 °C. A cooperative co-assembly process of amphiphilic triblock copolymer F127 molecules and inorganic hydroxyl species originated from the hydrolysis of Zr and Al precursors was proposed to explain the synthesis of OMZA-x. Compared to ordered mesoporous alumina prepared without introducing Zr species, the resultant OMZA-x exhibited a much more ordered mesostructure combined with a distinct increase in the pore volume and specific surface area. The highly homogenous doping of Zr into the mesopore walls together with the formation of Zr-O-Al bonds can effectively enhance the thermal and hydrothermal stability of OMZA-x. For instance, the ordered mesostructure and excellent textural properties of OMZA-6 prepared with the optimum atomic ratio of Al to Zr of 6 could be well maintained even after a high-temperature treatment at 1000 °C for 1 h or a hydrothermal treatment at 100 °C for 6 h.
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Affiliation(s)
| | | | | | - Dahai Pan
- Research Centre of Energy Chemical & Catalytic Technology, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (F.Y.); (S.B.); (T.L.); (S.C.); (X.Y.); (B.F.)
| | | | | | | | - Ruifeng Li
- Research Centre of Energy Chemical & Catalytic Technology, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (F.Y.); (S.B.); (T.L.); (S.C.); (X.Y.); (B.F.)
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Saptiama I, Kaneti YV, Yuliarto B, Kumada H, Tsuchiya K, Fujita Y, Malgras V, Fukumitsu N, Sakae T, Hatano K, Ariga K, Sugahara Y, Yamauchi Y. Biomolecule-Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption. Chemistry 2019; 25:4843-4855. [PMID: 30652362 DOI: 10.1002/chem.201900177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Indexed: 11/08/2022]
Abstract
The effective utilization of various biomolecules for creating a series of mesoporous boehmite (γ-AlOOH) and gamma-alumina (γ-Al2 O3 ) nanosheets with unique hierarchical multilayered structures is demonstrated. The nature and concentration of the biomolecules strongly influence the degree of the crystallinity, the morphology, and the textural properties of the resulting γ-AlOOH and γ-Al2 O3 nanosheets, allowing for easy tuning. The hierarchical γ-AlOOH and γ-Al2 O3 multilayered nanosheets synthesized by using biomolecules exhibit enhanced crystallinity, improved particle separation, and well-defined multilayered structures compared to those obtained without biomolecules. More impressively, these γ-AlOOH and γ-Al2 O3 nanosheets possess high surface areas up to 425 and 371 m2 g-1 , respectively, due to their mesoporous nature and hierarchical multilayered structure. When employed for molybdenum adsorption toward medical radioisotope production, the hierarchical γ-Al2 O3 multilayered nanosheets exhibit Mo adsorption capacities of 33.1-40.8 mg g-1 . The Mo adsorption performance of these materials is influenced by the synergistic combination of the crystallinity, the surface area, and the pore volume. It is expected that the proposed biomolecule-assisted strategy may be expanded for the creation of other 3D mesoporous oxides in the future.
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Affiliation(s)
- Indra Saptiama
- International Center for Materials Nanoarchitectonics (WPI-MANA), and International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.,Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8576, Japan.,Center for Radioisotope and Radiopharmaceutical Technology, National Nuclear Energy Agency (BATAN), Puspiptek Area, Serpong, South Tangerang, Indonesia
| | - Yusuf Valentino Kaneti
- International Center for Materials Nanoarchitectonics (WPI-MANA), and International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Brian Yuliarto
- Engineering Physics Department and Research Centre for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
| | - Hiroaki Kumada
- Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8576, Japan
| | - Kunihiko Tsuchiya
- Japan Atomic Energy Agency (JAEA), 4002 Narita, Oarai, Higashi-Ibaraki, Ibaraki, 311-1393, Japan
| | - Yoshitaka Fujita
- Japan Atomic Energy Agency (JAEA), 4002 Narita, Oarai, Higashi-Ibaraki, Ibaraki, 311-1393, Japan
| | - Victor Malgras
- International Center for Materials Nanoarchitectonics (WPI-MANA), and International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Nobuyoshi Fukumitsu
- Department of Radiotherapy, Kobe Proton Center, 1-6-8, Minatoshima Minamimachi, Kobe, Hyogo, 650-0047, Japan
| | - Takeji Sakae
- Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8576, Japan
| | - Kentaro Hatano
- Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8576, Japan
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (WPI-MANA), and International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.,Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-0827, Japan
| | - Yoshiyuki Sugahara
- Department of Applied Chemistry and, Department of Nanoscience and Nanoengineering, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan
| | - Yusuke Yamauchi
- School of Chemical Engineering and, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland, 4072, Australia.,Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
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