期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 147, 期 3, 页码 1146-1156出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.06.071
关键词
Inorganic compounds; Nanostructures; Semiconductors; Chemical synthesis; Heterostructures
资金
- National Natural Science Foundation of China [51102160, 51272148]
- Fundamental Research Funds for the Central Universities [GK201402009, GK201401003]
- College Students' Innovative Projects of the State Ministry of Education [201310718034, cx13035]
- Japan Society for the Promotion of Science (JSPS)
TiO2/BiOCl nanocomposite photocatalysts were synthesized by a simple chemical coprecipitation method. Transmission electron microscopic (TEM) observations confirm that anatase TiO2 nanoparticles with diameters of about 5-10 nm were loaded on the BiOCl nanosheets with the exposed {001} facets. Adsorption and photocatalytic activity of the samples were evaluated by the degradation of Rhodamine B (RhB) and methyl orange (MO) in the dark and under simulated solar light, respectively. Pure BiOCl and TiO2/BiOCl nanocomposite photocatalysts showed high adsorption ability for RhB and a relatively poor adsorption ability for MO. The results of the photodegradation experiments indicated that 20 wt% TiO2/BiOCl nanocomposite shows the highest photocatalytic activity for RhB, whereas 15 wt% TiO2/BiOCl nanocomposite photocatalyst shows the highest photocatalytic activity for MO. On the basis of experimental results, the mechanisms for the enhanced adsorption capacity and photocatalytic activity are discussed. In particular, the 20 wt% TiO2/BiOCl nanocomposite photocatalyst shows good chemical stability and photocatalytic activity during five consecutive cycles of RhB photodegradation. The TiO2/BiOCl nanocomposite photocatalyst could also be easily recovered by sedimentation due to higher density of BiOCl (7.72 g cm(-3)) compared to that of TiO2 (4.23 g cm(-3)). (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