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Zhang D, Luo N, Xue Z, Bai Y, Xu J. Hierarchically porous ZnO derived from zeolitic imidazolate frameworks for high-sensitive MEMS NO 2 sensor. Talanta 2024; 274:125995. [PMID: 38599115 DOI: 10.1016/j.talanta.2024.125995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/01/2024] [Accepted: 03/24/2024] [Indexed: 04/12/2024]
Abstract
Three-dimensional (3D) porous metal oxide nanomaterials with controllable morphology and well-defined pore size have attracted extensive attention in the field of gas sensing. Herein, hierarchically porous ZnO-450 was obtained simply by annealing Zeolitic Imidazolate Frameworks (ZIF-90) microcrystals at an optimal temperature of 450 °C, and the effect of annealing temperature on the formation of porous nanostructure was discussed. Then the as-obtained ZnO-450 was employed as sensing materials to construct a Micro-Electro-Mechanical System (MEMS) gas sensor for detecting NO2. The MEMS sensor based on ZnO-450 displays the excellent gas-sensing performances at a lower working temperature (190 °C), such as high response value (242.18% @ 10 ppm), fast response/recovery time (9/26 s) and ultralow limit of detection (35 ppb). The ZnO-450 sensor shows better sensing performance for NO2 detection than ZnO-based composites materials or commercial ZnO nanoparticles (NPs), which are attributed to its unique hierarchically structures with high porosity and larger surface area. This ZIFs driven strategy can be expected to pave a new pathway for the design of high-performance NO2 sensors.
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Affiliation(s)
- Dan Zhang
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai, 200444, China; Hainan Engineering Research Center of Tropical Ocean Advanced Optoelectronic Functional Materials, Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, 571158, Haikou, China
| | - Na Luo
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai, 200444, China
| | - Zhenggang Xue
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai, 200444, China
| | - Yueling Bai
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai, 200444, China.
| | - Jiaqiang Xu
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai, 200444, China.
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Yu S, Li C, Zhao S, Chai M, Hou J, Lin R. Recent advances in the interfacial engineering of MOF-based mixed matrix membranes for gas separation. NANOSCALE 2024; 16:7716-7733. [PMID: 38536054 DOI: 10.1039/d4nr00096j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The membrane process stands as a promising and transformative technology for efficient gas separation due to its high energy efficiency, operational simplicity, low environmental impact, and easy up-and-down scaling. Metal-organic framework (MOF)-polymer mixed matrix membranes (MMMs) combine MOFs' superior gas-separation performance with polymers' processing versatility, offering the opportunity to address the limitations of pure polymer or inorganic membranes for large-scale integration. However, the incompatibility between the rigid MOFs and flexible polymer chains poses a challenge in MOF MMM fabrication, which can cause issues such as MOF agglomeration, sedimentation, and interfacial defects, substantially weakening membrane separation efficiency and mechanical properties, particularly gas separation. This review focuses on engineering MMMs' interfaces, detailing recent strategies for reducing interfacial defects, improving MOF dispersion, and enhancing MOF loading. Advanced characterisation techniques for understanding membrane properties, specifically the MOF-polymer interface, are outlined. Lastly, it explores the remaining challenges in MMM research and outlines potential future research directions.
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Affiliation(s)
- Shuwen Yu
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 234000, China
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Conger Li
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Shuke Zhao
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Milton Chai
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Jingwei Hou
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Rijia Lin
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
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Lee J, Lee J, Kim JY, Kim M. Covalent connections between metal-organic frameworks and polymers including covalent organic frameworks. Chem Soc Rev 2023; 52:6379-6416. [PMID: 37667818 DOI: 10.1039/d3cs00302g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Hybrid composite materials combining metal-organic frameworks (MOFs) and polymers have emerged as a versatile platform for a broad range of applications. The crystalline, porous nature of MOFs and the flexibility and processability of polymers are synergistically integrated in MOF-polymer composite materials. Covalent bonds, which form between two distinct materials, have been extensively studied as a means of creating strong molecular connections to facilitate the dispersion of "hard" MOF particles in "soft" polymers. Numerous organic transformations have been applied to post-synthetically connect MOFs with polymeric species, resulting in a variety of covalently connected MOF-polymer systems with unique properties that are dependent on the characteristics of the MOFs, polymers, and connection modes. In this review, we provide a comprehensive overview of the development and strategies involved in preparing covalently connected MOFs and polymers, including recently developed MOF-covalent organic framework composites. The covalent bonds, grafting strategies, types of MOFs, and polymer backbones are summarized and categorized, along with their respective applications. We highlight how this knowledge can serve as a basis for preparing macromolecular composites with advanced functionality.
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Affiliation(s)
- Jonghyeon Lee
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea.
| | - Jooyeon Lee
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea.
| | - Jin Yeong Kim
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea.
| | - Min Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea.
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Liu Q, Chen M, Chen G, Liu G, Xu R, Jin W. Molecular design of two-dimensional graphdiyne membrane for selective transport of CO2 and H2 over CH4, N2, and CO. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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Li H, Zhuang S, Zhao B, Yu Y, Liu Y. Visualization of the gas permeation in core–shell MOF/Polyimide mixed matrix membranes and structural optimization based on finite element equivalent simulation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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