期刊
SURFACES AND INTERFACES
卷 12, 期 -, 页码 20-25出版社
ELSEVIER
DOI: 10.1016/j.surfin.2018.04.006
关键词
Zeolitic imidazolate frameworks; MWCNTs; Hirarchial structures; CO2 capture; Adsorption isotherms
类别
资金
- Council of Scientific Industrial Research (CSIR), Govt. of India [01 (2843)/ 16/EMR-II]
Zeolitic Imidazolate Frameworks (ZIFs) are one of the best porous materials for the selective adsorption of CO2. Hierarchical porous hybrid materials of Zn/Co-ZIFs (ZIF-8/ZIF-67) with carboxylate functionalized MWCNTs (fMWCNTs) or nitrogen doped MWCNTs (N-MWCNTs) have been synthesized through in-situ insertion of MWCNTs in ZIFs. Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Thermogravemetric analysis (TGA), Powder X-Ray diffraction and Brunauer-Emmett-Teller (BET) techniques have been used to examine the morphology, texture, phase and surface area of as prepared hybrids. These hybrids adsorb 2.07-2.48 wt% of CO2 at 298 K and 1.0 bar pressure. f-MWCNTs@Zn/Co-ZIF adsorbed more CO2 compared to f-MWCNTs@ZIF-8 or f-MWCNTs@ZIF-67. A marginal increase in CO2 uptake was observed by hybrids composed with N-MWCNTs.
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