Effect of amorphous alumina and alpha-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 alpha-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
卷号	185 页码:301-310
关键词	MnAl2O4 Polyacrylamide gel method Light absorption Phase transition Synergistic effect
ISSN号	0030-4026
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.
资助项目	major cultivation projects of Chongqing Three Gorges University[18ZDPY01]
WOS研究方向	Optics
语种	英语
出版者	ELSEVIER GMBH
WOS记录号	WOS:000476692600042
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32247]
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Wang, Shifa
作者单位	1.Chongqing Three Gorges Univ, Sch Elect & Informat Engn, Chongqing 404000, Wanzhou, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 3.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shifa,Wei, Xuefeng,Gao, Huajing,et al. Effect of amorphous alumina and alpha-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 alpha-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 alpha-alumina on optical, color, fluorescence properties and photocatalytic activity of the MnAl2O4 spinel oxides".OPTIK 185(2019):301-310.