纳米晶
化学工程
肺表面活性物质
选择性
吸附
选择性吸附
溴化物
膜
十二面体
材料科学
基质(化学分析)
阳离子聚合
无机化学
化学
纳米技术
高分子化学
有机化学
结晶学
催化作用
复合材料
工程类
生物化学
作者
Erfan Asadi,Ali Ghadimi,Seyed Saeid Hosseini,Behrouz Sadatnia,Mohammad Rostamizadeh,Atefeh Nadeali
标识
DOI:10.1016/j.micromeso.2021.111539
摘要
ZIF-8 nanocrystals were synthesized in the presence of cetyltrimethylammonium bromide, as a cationic surfactant, ([email protected]) and then modified by iron promoter ([email protected]) through a wet impregnation process. Self-assembly of surfactant in the synthesis route changed morphology of ZIF-8 nanocrystals from rhombic dodecahedron (RD) to truncated rhombic dodecahedron (TRD). The structural modifications significantly changed the adsorption properties of the nanocrystals for CO2 and CH4, so that [email protected] nanocrystals provided the highest CO2/CH4 adsorption selectivity (∼19) compared to values have ever been reported in the literature. The nanocrystals were also employed for preparation of mixed matrix membranes (MMMs) using Matrimid®5218 as the polymeric matrix. Investigation of gas transport properties of the MMMs confirmed promising separation performance of [email protected] nanocrystals for CO2/CH4 separation.
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