Facile fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks for enhanced toluene adsorption capacity
来源期刊：Rare Metals2021年第2期
论文作者：Min-Hui Yang Chong-Xiong Duan Xin-Juan Zeng Jing-Jing Li Cui-Yin Liu Long-Jiao Zeng Yi Zhang Kai Wang Hong-Xia Xi
文章页码：471 - 477
摘 要：The development of a simple and facile synthesis route is a highly desirable but challenging process in the fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks（ZIFs）.Herein we describe a facile method for rapidly synthesizing hierarchically porous ZIF-90 nanocrystals（particle sizes of ～300 nm） using hydroxyl double salts as intermediates at room temperature.The as-synthesized ZIF-90 contained hierarchical porous structures developed using a crystalline interior and a random stack of multiple nanoparticles.Both the morphology and particle size of ZIF-90 nanocrystals could be tuned by controlling the molar ratio of ICA/Zn2+.Note that the as-synthesized hierarchically porous ZIF-90 nanocrystals exhibited higher thermal stability compared with the conventional ZIF-90.Because of the introduction of hierarchical porous structures,the resultant hierarchically porous ZIF-90 nanocrystals showed enhanced toluene adsorption capacity than those of conventional metal organic frameworks and zeolites.
Min-Hui Yang1,2，Chong-Xiong Duan1，Xin-Juan Zeng1，Jing-Jing Li1，Cui-Yin Liu1，Long-Jiao Zeng1，Yi Zhang3，Kai Wang4，Hong-Xia Xi2
1. School of Materials Science and Hydrogen Energy,Foshan University2. School of Chemistry and Chemical Engineering,South China University of Technology3. School of Energy Sciences and Engineering,Nanjing Tech University4. School of Electrical Engineering,Qingdao University
摘 要：The development of a simple and facile synthesis route is a highly desirable but challenging process in the fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks（ZIFs）.Herein we describe a facile method for rapidly synthesizing hierarchically porous ZIF-90 nanocrystals（particle sizes of ～300 nm） using hydroxyl double salts as intermediates at room temperature.The as-synthesized ZIF-90 contained hierarchical porous structures developed using a crystalline interior and a random stack of multiple nanoparticles.Both the morphology and particle size of ZIF-90 nanocrystals could be tuned by controlling the molar ratio of ICA/Zn2+.Note that the as-synthesized hierarchically porous ZIF-90 nanocrystals exhibited higher thermal stability compared with the conventional ZIF-90.Because of the introduction of hierarchical porous structures,the resultant hierarchically porous ZIF-90 nanocrystals showed enhanced toluene adsorption capacity than those of conventional metal organic frameworks and zeolites.
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