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Core-shell structured alpha-Fe2O3@CeO2 heterojunction for the enhanced visible-light photocatalytic activity
Zheng, Xiaogang1; Huang, Min1; You, Yaohui1; Peng, Hao2; Wen, Jing3
2018-05-01
Source PublicationMATERIALS RESEARCH BULLETIN
Volume101Pages:20-28
SubtypeArticle
AbstractCeO2-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.
KeywordAlpha-fe2o3@ceo2 Visible-light Harvesting Core-shell Structure Heterojunction Interfaces
WOS HeadingsScience & Technology ; Technology
WOS KeywordSELECTIVE OXIDATION ; FE2O3 NANOPARTICLES ; ASSISTED SYNTHESIS ; BENZYL ALCOHOL ; RHODAMINE-B ; WASTE-WATER ; BISPHENOL-A ; DEGRADATION ; CEO2 ; PERFORMANCE
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000428098600004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6438
Collection青海盐湖研究所知识仓储
Affiliation1.Neijiang Normal Univ, Coll Chem & Chem Engn, Neijiang 641100, Sichuan, Peoples R China
2.Yangtze Normal Univ, Coll Chem & Chem Engn, Chongqing 408100, Peoples R China
3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
Recommended Citation
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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