期刊
MATERIALS LETTERS
卷 194, 期 -, 页码 172-175出版社
ELSEVIER
DOI: 10.1016/j.matlet.2017.02.048
关键词
TiO2; CdS; Carbon materials; Semiconductors; Photocatalysis
资金
- National Natural Science Foundation of China [21477019, 51473033]
- Science and Technology Commission of Shanghai Municipality [16JC1400700]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
The construction of semiconductor nanocomposites has been considered as one of the efficient methods to improve photocatalytic activity. Herein, we have prepared the ternary reduced graphene oxide (rGO)-TiO2-CdS nanocomposites by firstly hydrolyzing tetrabutyl titanate in GO solution to prepare GO-TiO2 precursor, and then hydrothermally treating GO-TiO2/Cd(NO3)(2)/L-cysteine solution. Typically, rGO-TiO2-0.55CdS (Cd/Ti molar ratio: 0.55/1) consists of TiO2 spheres (similar to 1 mu m) and rGO framework, whose surfaces were uniformly decorated with CdS nanoparticles (similar to 30 nm). Under the illumination of visible-light, rGO-TiO2-0.55CdS can degrade 90.3% methylene blue (MB) dye and 65.3% parachlorophenol (4-CP) in 60 min, which are higher than those (55.9% for MB and 28.4% for 4-CP) by the binary rGO-TiO2. In addition, the recycling experiment confirms that rGO-TiO2-0.55CdS nanocomposite is essentially stable. Therefore, rGO-TiO2-CdS nanocomposites have great potential as effective and stable visible light -driven photocatalysts. (C) 2017 Elsevier B.V. All rights reserved.
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