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Enhancing the Gas Separation Selectivity of Mixed-Matrix Membranes Using a Dual-Interfacial Engineering Approach | |
2020-10-28 | |
发表期刊 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY |
ISSN | 0002-7863 |
卷号 | 142期号:43页码:18503-18512 |
发表状态 | 已发表 |
DOI | 10.1021/jacs.0c07378 |
摘要 | We report a dual-interfacial engineering approach that uses a sub-20 nm polycrystalline MOF-74 shell as a transition phase to engineer the MOF-polymer interface. The application of a shell MOF layer divides the original single interface problem into two interfaces: MOF-MOF and MOF-polymer, which can be individually addressed. The greater external surface area created by the uneven MOF-74 shell containing high-density open metal sites allows the MOF to interact with 300% polymer at the interface compared to traditional MOF, thereby ensuring good interfacial compatibility. When applied on UiO-66-NH2, its respective mixed-matrix membranes exhibit a simultaneous increase of CO2/CH4 separation selectivity and CO2 permeability with increasing MOF loading, implying a defect-free interface. When applied on MOF-801, the mixed-matrix membranes exhibit an ethylene/ethane separation selectivity up to 5.91, a drastic 76% increase compared to that of the neat polymer owing to a "gas focusing" mechanism promoted by the preferred pore orientation in the MOF-74 layer. This represents one of the most selective ethylene/ethane separation membranes reported to date. ; We report a dual-interfacial engineering approach that uses a sub-20 nm polycrystalline MOF-74 shell as a transition phase to engineer the MOF-polymer interface. The application of a shell MOF layer divides the original single interface problem into two interfaces: MOF-MOF and MOF-polymer, which can be individually addressed. The greater external surface area created by the uneven MOF-74 shell containing high-density open metal sites allows the MOF to interact with 300% polymer at the interface compared to traditional MOF, thereby ensuring good interfacial compatibility. When applied on UiO-66-NH2, its respective mixed-matrix membranes exhibit a simultaneous increase of CO2/CH4 separation selectivity and CO2 permeability with increasing MOF loading, implying a defect-free interface. When applied on MOF-801, the mixed-matrix membranes exhibit an ethylene/ethane separation selectivity up to 5.91, a drastic 76% increase compared to that of the neat polymer owing to a "gas focusing" mechanism promoted by the preferred pore orientation in the MOF-74 layer. This represents one of the most selective ethylene/ethane separation membranes reported to date. |
收录类别 | SCI ; SCIE ; EI |
资助项目 | National Natural Science Foundation of China[22075181][21701110] ; National Natural Science Foundation of China[22075181][21701110] ; Analytical Instrumentation Center[SPST-AIC10112914] ; Analytical Instrumentation Center[SPST-AIC10112914] ; Centre for High-resolution Electron Microscopy (Ch.EM) of SPST at ShanghaiTech University[EM02161943] ; Centre for High-resolution Electron Microscopy (Ch.EM) of SPST at ShanghaiTech University[EM02161943] |
WOS研究方向 | Chemistry ; Chemistry |
WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Multidisciplinary |
WOS记录号 | WOS:000582673500024 |
出版者 | AMER CHEMICAL SOC |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/123381 |
专题 | 物质科学与技术学院 物质科学与技术学院_PI研究组_李涛组 物质科学与技术学院_PI研究组_章跃标组 物质科学与技术学院_PI研究组_马延航组 物质科学与技术学院_PI研究组_yongjin lee组 物质科学与技术学院_硕士生 物质科学与技术学院_本科生 物质科学与技术学院_博士生 |
通讯作者 | Li, Tao |
作者单位 | ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Wu, Chunhui,Zhang, Kexin,Wang, Hongliang,et al. Enhancing the Gas Separation Selectivity of Mixed-Matrix Membranes Using a Dual-Interfacial Engineering Approach[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2020,142(43):18503-18512. |
APA | Wu, Chunhui.,Zhang, Kexin.,Wang, Hongliang.,Fan, Yaqi.,Zhang, Songwei.,...&Li, Tao.(2020).Enhancing the Gas Separation Selectivity of Mixed-Matrix Membranes Using a Dual-Interfacial Engineering Approach.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,142(43),18503-18512. |
MLA | Wu, Chunhui,et al."Enhancing the Gas Separation Selectivity of Mixed-Matrix Membranes Using a Dual-Interfacial Engineering Approach".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142.43(2020):18503-18512. |
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