Structural and Optical Properties of Ultra-thin g-C3N4 nanotubes based g-C3N4/Ag/Ag2CrO4 ternary composite photocatalyst with Z-scheme carrier transfer mechanism

doi:10.1016/j.optmat.2021.111608

	Structural and Optical Properties of Ultra-thin g-C3N4 nanotubes based g-C3N4/Ag/Ag2CrO4 ternary composite photocatalyst with Z-scheme carrier transfer mechanism
	Yu, Fucheng 1; Cui, Junpeng 1; Zhou, Yadong 1; Li, Yuanmeng 1; Liu, Zhengyan 1; He, Ling 1; Zhang, Jianbin 1; Tang, Xianxi 1; Liu, Yangshuo 2
刊名	Optical Materials
	2021-11-01
卷号	121
关键词	Chromium compounds Electronic properties Image enhancement Metal nanoparticles Nanotubes Optical properties Organic pollutants Photocatalytic activity Silver compounds Silver nanoparticles Urea Ag nanoparticle decoration Carrier transfer Composite photocatalysts G-C3N4 nanotube Photogenerated carriers Structural and optical properties Ternary composites Transfer mechanisms Ultra-thin Wall thickness
ISSN号	09253467
DOI	10.1016/j.optmat.2021.111608
英文摘要	Ultra-thin g-C3N4 nanotubes with a wall thickness of about 10 nm were prepared by calcining a supramolecular precursor synthesized from cyanuric acid, melamine and urea. After Ag nanoparticles were deposited on the surface of g-C3N4 nanotubes and partially oxidized to Ag2CrO4, a g-C3N4/Ag/Ag2CrO4 ternary nanocomposite was obtained. The structural, optical and electronic properties of the composite were investigated. Compared with pure g-C3N4 nanotubes and g-C3N4 nanotubes decorated with Ag nanoparticles, the photocatalytic performance of the ternary composite is much improved due to its large specific surface area and effective separation efficiency of photo-generated electron-hole pairs. Furthermore, the composite not only promotes the effective separation of photo-generated carriers, but also inhibits the photocorrosion of its Ag2CrO4 component. A Z-scheme photo-generated carrier transfer mechanism with strong redox ability between the components in the g-C3N4/Ag/Ag2CrO4 ternary composite is confirmed by constructing the band structure of the composite. The high photocatalytic degradation performance of organic pollutants after several cycle tests makes it possible to be applied in practice. © 2021
WOS研究方向	Materials Science ; Optics
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000705869800005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150934]
专题	材料科学与工程学院土木工程学院
作者单位	1.School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing and Finishing, Wuhan Textile University, Wuhan; 430073, China
推荐引用方式 GB/T 7714	Yu, Fucheng,Cui, Junpeng,Zhou, Yadong,et al. Structural and Optical Properties of Ultra-thin g-C3N4 nanotubes based g-C3N4/Ag/Ag2CrO4 ternary composite photocatalyst with Z-scheme carrier transfer mechanism[J]. Optical Materials,2021,121.
APA	Yu, Fucheng.,Cui, Junpeng.,Zhou, Yadong.,Li, Yuanmeng.,Liu, Zhengyan.,...&Liu, Yangshuo.(2021).Structural and Optical Properties of Ultra-thin g-C3N4 nanotubes based g-C3N4/Ag/Ag2CrO4 ternary composite photocatalyst with Z-scheme carrier transfer mechanism.Optical Materials,121.
MLA	Yu, Fucheng,et al."Structural and Optical Properties of Ultra-thin g-C3N4 nanotubes based g-C3N4/Ag/Ag2CrO4 ternary composite photocatalyst with Z-scheme carrier transfer mechanism".Optical Materials 121(2021).