Remarkable adsorption performance of MOF-199 derived porous carbons for benzene vapor

Environmental Research
Chenpeng WangShuiyuan Luo

Abstract

Volatile organic compounds (VOCs) are perceived as serious pollutants due to their great threat to both environment and human health. Recovery and removal of VOCs is of great significance. Herein, novel MOF-199 derived porous carbon materials (MC-T-n) were prepared by using MOF-199 as precursor, glucose as additional carbon source and KOH as activator, and then characterized. Adsorption performance of MC-T-n materials for benzene vapor was investigated. Isotherms of MC-T-n samples towards benzene and water vapor were measured. The adsorption selectivities of benzene/water were estimated by DIH (difference of the isosteric heats) equation. Results indicated that BET surface area and pore volume of MC-T-n materials reached separately 2320 m2/g and 1.05 m3/g. Benzene adsorption capacity of MC-T-n materials reached as high as 12.8 mmol/g at 25 °C, outperforming MOF-199 and some conventional adsorbents. Moreover, MC-T-n materials presented type-V isotherms of water vapor, suggesting their excellent water resistance. The isosteric heats of benzene adsorption on MC-500-6 were much greater than that of water adsorption, leading to a preferential adsorption for C6H6 over H2O. The adsorption selectivity of C6H6/H2O on MC-500-6 reached up...Continue Reading

Citations

Aug 31, 2020·Environmental Science and Pollution Research International·Onome EjeromedogheneMichael O Daramola
Jan 16, 2021·International Journal of Biological Macromolecules·Shahrzad Zirak Hassan KiadehFrank K Ko
Apr 14, 2021·ACS Applied Materials & Interfaces·Xianming ZhengPengyi Zhang
Jun 17, 2021·Journal of Environmental Sciences (China)·Shuangchun LuDegang Ma

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