Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity

doi:10.1016/j.materresbull.2018.01.007

ISL OpenIR > 青海盐湖研究所知识仓储

	Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity
	Zheng, Xiaogang; Huang, Min; You, Yaohui; Peng, Hao; Wen, Jing
	2018-05
发表期刊	MATERIALS RESEARCH BULLETIN
ISSN	0025-5408
卷号	101 页码:20-28
关键词	Alpha-fe2o3@ceo2 Visible-light Harvesting Core-shell Structure Heterojunction Interfaces
摘要	CeO2-coated alpha-Fe2O3 nanoparticles (alpha-Fe2O3@CeO2) with the enhanced photocatalytic activity were synthesized by a hydrothermal route and performed for the visible light driven photo-degradation of methylene blue (MB). The photocatalytic activity of alpha-Fe2O3@CeO2 is greatly affected by the thickness of CeO2 shell under the same conditions. The core-shell structured alpha-Fe2O3@CeO2 sample exhibited a narrower band gap energy in comparison to the pure alpha-Fe2O3 and CeO2 bulks, leading to the excellent photocatalytic activity and stability for the degradation of MB under visible light irradiation after five cycle times. The core-shell structured alpha-Fe2O3@CeO2 sample presented higher degradation activity than that of the supported 8-Fe/CeO2 bulks with optimized alpha-Fe2O3 loading of 8%. It can be ascribed to the Ce4+/Ce3+ redox couple and the heterojunction interfaces of core-shell structured alpha-Fe2O3@CeO2 sample, which can promote the electrons transfer and restrain the photoexcited electron-hole recombination, leading to the excellent degradation activity under visible light irradiation.
DOI	10.1016/j.materresbull.2018.01.007
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6438
专题	青海盐湖研究所知识仓储
推荐引用方式 GB/T 7714	Zheng, Xiaogang,Huang, Min,You, Yaohui,et al. Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity[J]. MATERIALS RESEARCH BULLETIN,2018,101:20-28.
APA	Zheng, Xiaogang,Huang, Min,You, Yaohui,Peng, Hao,&Wen, Jing.(2018).Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity.MATERIALS RESEARCH BULLETIN,101,20-28.
MLA	Zheng, Xiaogang,et al."Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity".MATERIALS RESEARCH BULLETIN 101(2018):20-28.

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