乙醛
化学
吸附
丙酮
降级(电信)
挥发性有机化合物
催化作用
臭氧
傅里叶变换红外光谱
光催化
环境化学
化学工程
无机化学
有机化学
乙醇
电信
计算机科学
工程类
作者
Jiajun Yu,Xiao Wang,Guolin Lu,Haijiao Xie,Xiaofeng Xie,Jun Sun
标识
DOI:10.1016/j.jhazmat.2024.134055
摘要
The purification of oxygenated volatile organic compounds VOCs (OVOCs), important precursors of ozone and particulate matters, has triggered intensive research interests. UiO-66 with high photocatalytic activity have shown great potential. However, the lack of active sites severely limited the trapping and degradation of OVOCs. Herein, reo-UiO-66 with increased specific surface area, hierarchical porous structure and tunable acidic/basic sites was synthesized by simply adding water as the modulator. XRD, TGA and FTIR results confirmed the formation of reo-defects, which significantly affected the surface hydrophilicity and active sites of UiO-66. The adsorption of Lewis acidic acetaldehyde was enhanced by 265 times with coordinative unsaturated Zr acting as the dominant adsorption sites. The degradation efficiency of typical OVOCs (acetaldehyde and acetone) increased from 0% and 25% to 50% and 73%, respectively. This work provided a facile method to modulate the micro-environment in MOFs for the efficient capture and catalytic purification of OVOCs.
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