期刊
JOURNAL OF RARE EARTHS
卷 32, 期 1, 页码 17-22出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(14)60028-4
关键词
hydrothermal; POM/TiO2; rare earth elements; photocatalytic; dinitrotoluene; reaction rate
资金
- Institution of Chemical Materials
- China Academy of Engineering Physics
A series of mesoporous materials (H3PW12O40/TiO2, Y-H3PW12O40/TiO2 and La-H3PW12O40/TiO2) were prepared by a modified sol-gel-hydrothermal route, which realized the load and modification of H3PW12O40 at the same time. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), nitrogen adsorption-desorption analysis, ultraviolet-visible absorption spectrum (UV-Vis) and scanning electron microscopy (SEM). The XRD and FT-IR results displayed that the catalysts had uniform anatase phase and the primary Keggin structure of H3PW12O40 remain intact. Nitrogen adsorption-desorption analysis suggested that suitable doping of rare earth elements could increase the specific surface area from 177.9 m(2)/g (H3PW12O40/TiO2) to 229.5 (1 wt.%Y-H3PW12O40/TiO2) or 236.1 m(2)/g (1 wt.%La-H3PW12O40/TiO2). Results of UV-Vis spectra showed that the band of the 1 wt.%Y-H3PW12O40/TiO2 and 1 wt.%La-H3PW12O40/TiO2 have an obvious redshift compared with the H3PW12O40/TiO2. Additionally, the composites were used as heterogeneous photocatalysts to the degradation of dinitrotoluene (DNT). It is the first time that polyoxometalate (POM) is applied in the degradation of explosive wastewater.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据