Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance

doi:10.1016/j.mtchem.2022.100942

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	Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance
	Wang, S.1,2; Gao, H.1,2,3; Jin, Y.1; Chen, X.1,2,5; Wang, F.4; Yang, H.3; Fang, L.5; Tang, S.1,2; Li, D.6
刊名	Materials Today Chemistry
	2022-06-01
卷号	24
关键词	Aluminum compounds Aromatic compounds Cerium oxide Charge carriers Energy gap Ions Light Manganese Manganese oxide Oxides Photocatalytic activity Strontium compounds Al-ions Defect engineering Light response Light response ability Mn ions Near ultraviolet Organic dye P-n heterojunctions Polyacrylamide gel method Response ability
DOI	10.1016/j.mtchem.2022.100942
英文摘要	The M(M = Ca, Sr, Ba)Al12O19, MAl12O19:Mn, and MAl12O19:Mn:Ce photocatalysts have been synthesized successfully through a polyacrylamide gel method. The Mn ion prefer to occupy the position of Al ion in SrAl12O19, while there is no evidence revealing that the Mn ion occupies the Al ion position in (Ca, Ba)Al12O19. The one-pot polyacrylamide gel method utilizes the fast nucleation, growth, and heterostructure construction of the MAl12O19 to deliberately immobilize the desired fine spherical particles of Mn3O4 or Mn3O4 and CeO2 on the surface of MAl12O19 nanosheets. All the MAl12O19:Mn:Ce photocatalysts exhibited outstanding photocatalytic activities for the degradation of methylene blue than that of M(M = Ca, Sr, Ba)Al12O19 and MAl12O19:Mn photocatalysts under near ultraviolet and visible light irradiation. The improved photocatalytic activity of n-p-n type double p-n heterojunction MAl12O19:Mn:Ce photocatalysts can be attributed to the synergistic effect among the M(M = Ca, Sr, Ba)Al12O19, CeO2, and Mn3O4, which not only improves the visible light response ability and enhances the migration and separation efficiency of charge carriers but also retains the strong the oxidation or reduction capacity of charge carriers. This work may provide a n-p-n type double p-n heterojunction photocatalytic system into the development and design high efficient heterojunction photocatalysts for the degradation of organic dyes and environmental protection. © 2022 Elsevier Ltd
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158481]
专题	兰州理工大学
作者单位	1.School of Electronic and Information Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing; 404000, China; 2.Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-warning in Three Gorges Reservoir Area, Chongqing Three Gorges University, Chongqing, Wanzhou; 404000, China; 3.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 4.College of Materials Science and Engineering, Sichuan University, Chengdu; 610064, China; 5.Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Sichuan, Mianyang; 621900, China; 6.School of Science, Chongqing University of Posts and Telecommunications, Nan'an District, Chongqing; 400065, China
推荐引用方式 GB/T 7714	Wang, S.,Gao, H.,Jin, Y.,et al. Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance[J]. Materials Today Chemistry,2022,24.
APA	Wang, S..,Gao, H..,Jin, Y..,Chen, X..,Wang, F..,...&Li, D..(2022).Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance.Materials Today Chemistry,24.
MLA	Wang, S.,et al."Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance".Materials Today Chemistry 24(2022).