Effect of amorphous alumina and α-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides

doi:10.1016/j.ijleo.2019.03.147

CORC > 兰州理工大学 > 兰州理工大学

	Effect of amorphous alumina and α-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides
	Wang, Shifa 1; Wei, Xuefeng 1; Gao, Huajing 2,3; Wei, Yong 1
刊名	Optik
	2019-05-01
卷号	185 页码:301-310
关键词	Aluminum metallography Aluminum oxide Azo dyes Charge transfer Color Fluorescence Gamma rays Infrared spectroscopy Irradiation Light absorption Manganese compounds Phase transitions Photocatalytic activity Sintering X ray photoelectron spectroscopy Electrochemical characterizations Excellent photocatalytic activities Fluorescence properties MnAl2O4 Photo catalytic degradation Polyacrylamide gel method Sintering temperatures Synergistic effect
ISSN号	00304026
DOI	10.1016/j.ijleo.2019.03.147
英文摘要	A series of the alumina decorated MnAl2O4 photocatalysts were synthesized via a gamma-ray irradiation assisted polyacrylamide gel method and were evaluated for the photocatalytic degradation of congo red dye under simulated sunlight irradiation. The structural, infrared spectroscopy, X-ray photoelectron spectroscopy and color performance analysis found that the Al ion incomplete enter the host lattice of MnAl2O4 and the color properties of as-prepared samples strongly dependent on the sintering temperature. The optical, fluorescence and electrochemical characterization reveals that a small amounts of organic impurities and amorphous alumina can helps in increasing light absorption, reducing the Eg value, suppressing electron hole pair recombination and promoting charge transfer and separation. A small amounts of organic impurities and amorphous alumina decorated MnAl2O4 photocatalysts exhibits an excellent photocatalytic activity due to the synergistic effect of light absorption, organic impurity, the phase transition of alumina, Eg value, charge transportation and separation efficiency. The possible photocatalytic mechanism of the alumina decorated MnAl2O4 photocatalyst for degradation of congo red dye have been discussed on the basis of the characterization results. © 2019 Elsevier GmbH
WOS研究方向	Optics
语种	英语
出版者	Elsevier GmbH
WOS记录号	WOS:000476692600042
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114213]
专题	兰州理工大学
作者单位	1.School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing; Wanzhou; 404000, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Shifa,Wei, Xuefeng,Gao, Huajing,et al. Effect of amorphous alumina and α-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides[J]. Optik,2019,185:301-310.
APA	Wang, Shifa,Wei, Xuefeng,Gao, Huajing,&Wei, Yong.(2019).Effect of amorphous alumina and α-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides.Optik,185,301-310.
MLA	Wang, Shifa,et al."Effect of amorphous alumina and α-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides".Optik 185(2019):301-310.