CuO-containing multi-walled carbon nanotubes:a novel catalyst for the catalytic ozonation of humic acid in water

被引：0

作者：

覃吴 ^{[1
]}

李欣 ^{[1
]}

机构：

[1] Department of Chemistry,Harbin Institute of Technology

来源：

Journal of Harbin Institute of Technology(New series) | 2011年 / 05期

关键词：

catalytic ozonation; humic acid; carbon nanotube; DFT;

D O I：

暂无

中图分类号：

O643.32 [催化反应];

学科分类号：

081705 ;

摘要：

CuO particles were attempted to fill in the channel of multi-walled carbon nanotubes (MWCNTs) as novel catalytic materials CuO@MWCNTs used for ozonation of humic acids (HA) in aqueous solution.Catalyst samples were characterized by transmission electron microscopy (TEM),X-ray diffraction (XRD),thermogravimetric analysis (TG) and X-ray photoelectron spectroscopy (XPS).The removal efficiency of HA was promoted in the presence of CuO@MWCNTs compared with that of Al2O3-supported CuO catalyst (CuO/Al2O3) and CuO-coating MWCNTs catalyst (CuO/MWCNTs).The strong synergetic effect in the confinement environment on CuO nanoparticles can attribute to the locally higher pressure due to the lower potential energy of reactants in the channels.Strong interaction happened between the catalyst and reactants,which promoted the decomposition of ozone and the generation of OH.The results of experimental and theoretical investigation confirmed that CuO@MWCNTs promotes the initiation and generation of OH,hence accelerating the degradation of organic pollutants.

引用

页码：19 / 25

页数：7

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