期刊
APPLIED CATALYSIS A-GENERAL
卷 476, 期 -, 页码 1-8出版社
ELSEVIER
DOI: 10.1016/j.apcata.2014.02.001
关键词
Photocatalysis; Zn(1-x)MnxS solid solution; Reusability of the photocatalyst; Effect of Mn on photocatalytic activity of Zn(1-x)MnxS; Kinetic study
资金
- Grants-in-Aid for Scientific Research [12F02363] Funding Source: KAKEN
Water dispersible Zn(1-x)MnxS solid solution photocatalysts stabilized with L-aspartic acid were synthesized by coprecipitation. Their photocatalytic activity was evaluated using methylene blue as a model pollutant. X-ray diffraction and Raman spectroscopy indicated the catalysts had a cubic crystal structure. The gradual increase in zinc sulphide (ZnS) lattice constant with increasing Mn2+ dopant concentration was due to the high ionic radius of Mn2+. Raman spectra exhibited two peaks at 260 and 345 cm(-1). Ultraviolet-visible absorption spectra of the catalysts exhibited a strong excitonic peak at 270 nm, which was blue shifted compared with that of bulk ZnS (340 nm). This was attributed to quantum confinement and coupling effects. The hydrophilic L-aspartic acid on the photocatalyst surface had a positive effect on photocatalytic activity. The effects of dye and dopant concentrations on photocatalytic activity were investigated. (C) 2014 Elsevier B.V. All rights reserved.
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