Influence of semiconductor/insulator/semiconductor structure on the photo-catalytic activity of Fe3O4/SiO2/polythiophene core/shell submicron composite

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2014专题

	Influence of semiconductor/insulator/semiconductor structure on the photo-catalytic activity of Fe3O4/SiO2/polythiophene core/shell submicron composite
	Zhang, Fan ; Shi, Yuanji ; Zhao, Zongshan ; Song, Weijie ; Cheng, Yang
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2014
卷号	150 页码:472
中文摘要	The Fe3O4/SiO2/polythiophene (FSP) submicron composite (SC) with a structure of semiconductor/insulator/semiconductor (SIS) was obtained. The characterization results showed that the FSP SC had a spherical core/shell shape with an average diameter of 506 nm. The high saturated magnetization value (similar to 39 emu/g) ensured the easy separation of FSP SC from aqueous solution. The photo-catalytic activity of the FSP SC was evaluated by the degradation of methyl orange (MO) under UV-irradiation in the presence of H2O2. Due to the SIS structure, the degradation rate constant by FSP SC (0.02177 min(-1)) was 6.4, 1.6, and 2.5 times higher than that of Fe3O4/polythiophene (FP), polythiophene (P), and TiO2, respectively. The repetition results suggested the good photochemical stability of FSP SC. The mechanism was proposed by investigating the energy band variation of the SIS structure, the transfer of light generated carriers and the formation of effective hydroxyl radicals in the photo-catalysis progress. (C) 2014 Elsevier B.V. All rights reserved.
公开日期	2015-09-20
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/11854]
专题	宁波材料技术与工程研究所_2014专题
推荐引用方式 GB/T 7714	Zhang, Fan,Shi, Yuanji,Zhao, Zongshan,et al. Influence of semiconductor/insulator/semiconductor structure on the photo-catalytic activity of Fe3O4/SiO2/polythiophene core/shell submicron composite[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,150:472.
APA	Zhang, Fan,Shi, Yuanji,Zhao, Zongshan,Song, Weijie,&Cheng, Yang.(2014).Influence of semiconductor/insulator/semiconductor structure on the photo-catalytic activity of Fe3O4/SiO2/polythiophene core/shell submicron composite.APPLIED CATALYSIS B-ENVIRONMENTAL,150,472.
MLA	Zhang, Fan,et al."Influence of semiconductor/insulator/semiconductor structure on the photo-catalytic activity of Fe3O4/SiO2/polythiophene core/shell submicron composite".APPLIED CATALYSIS B-ENVIRONMENTAL 150(2014):472.