Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N- O and C- O functional groups decorating spinel type magnesium aluminate

doi:10.1039/c8ce01474d

CORC > 兰州理工大学 > 兰州理工大学

	Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N- O and C- O functional groups decorating spinel type magnesium aluminate
	Wang, Shifa 1; Gao, Huajing 2,3; Wei, Yong 1; Li, Yanwu 1; Yang, Xiaohong 4; Fang, Leiming 5; Lei, Li 6
刊名	CRYSTENGCOMM
	2019-01-14
卷号	21 期号:2 页码:263-277
ISSN号	1466-8033
DOI	10.1039/c8ce01474d
英文摘要	MgAl2O4 with a spinel structure was successfully synthesized using a gamma-ray irradiation assisted polyacrylamide gel method. The samples were synthesized at different calcining temperatures to study the effects on the phase purity, optical, color and fluorescence properties and photocatalytic activity of the as-prepared samples. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analysis indicates that the calcining temperature has an obvious influence on the crystallinity and the formation of the MgAl2O4 spinel phase. Transmission electron microscopy (TEM) observation shows that the primary crystal of the MgAl2O4 nanoparticles is only 30 nm and exhibits a higher uniformity than those of MgAl2O4 nanoparticles fabricated using the conventional polyacrylamide gel method. Optical properties show that the optical energy gap (Eg) of the MgAl2O4 nanoparticles increases with the increasing calcining temperature, mainly due to the interaction between the N-O and C-O functional groups and the calcining temperature. An abnormal result for the color parameter of the MgAl2O4 xerogel powders calcined at 900 degrees C indicates the enhancement of the crystallinity and the phase purity of the MgAl2O4 nanoparticles. The fluorescence spectra indicates that the emission intensity of the emission peak at 395 nm decreases with the increasing calcining temperature. The photocatalytic activity of the MgAl2O4 nanoparticles prepared at different calcining temperature were then tested for photocatalytic degradation of the methylene blue (MB) dye. The result indicates that the MgAl2O4 xerogel powders calcined at 800 degrees C exhibit the highest photocatalytic activity, and that this is relevant to the light absorption ability, band edge position, separation and utilization efficiency of the photogenerated carriers of the as-prepared sample. The fluorescence and photocatalytic mechanisms show that a small number of N-O and C-O functional groups in the presence of the MgAl2O4 nanoparticles can help to improve the fluorescence properties and photocatalytic activity of the MgAl2O4 nanoparticles.
WOS研究方向	Chemistry ; Crystallography
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000454942600005
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32168]
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
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; 4.Lanzhou Jiaotong Univ, Bowen Coll, Lanzhou 730101, Gansu, Peoples R China; 5.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China; 6.Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shifa,Gao, Huajing,Wei, Yong,et al. Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N- O and C- O functional groups decorating spinel type magnesium aluminate[J]. CRYSTENGCOMM,2019,21(2):263-277.
APA	Wang, Shifa.,Gao, Huajing.,Wei, Yong.,Li, Yanwu.,Yang, Xiaohong.,...&Lei, Li.(2019).Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N- O and C- O functional groups decorating spinel type magnesium aluminate.CRYSTENGCOMM,21(2),263-277.
MLA	Wang, Shifa,et al."Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N- O and C- O functional groups decorating spinel type magnesium aluminate".CRYSTENGCOMM 21.2(2019):263-277.