Structure and photocatalytic properties of the composite of Al-doped porous ZnO hollow micro-spheres and Ag nanoparticles

doi:10.1117/1.JNP.15.046002

	Structure and photocatalytic properties of the composite of Al-doped porous ZnO hollow micro-spheres and Ag nanoparticles
	Yu, Fucheng 1; Wang, Bolong 1; Cui, Junpeng 1; Nan, Dongmei 1; Li, Yuanmeng 1; Liu, Zhengyan 1; Tang, Xianxi 1; He, Ling 1; Zhang, Jianbin 1; Liu, Yangshuo 2
刊名	JOURNAL OF NANOPHOTONICS
	2021-10-01
卷号	15 期号:4
关键词	polystyrene template porous ZnO hollow micro-spheres Al-doping Ag nanoparticles photocatalysis
ISSN号	1934-2608
DOI	10.1117/1.JNP.15.046002
英文摘要	Al-doped porous ZnO hollow micro-spheres were prepared using a sol-gel method with a template of agglomerates of polystyrene (PS) nanospheres, and the composite of these ZnO hollow micro-spheres and Ag nanoparticles was prepared with further photo-deposition. The effects of Al doped on the structure and the optical properties of the specimen were investigated by means of x-ray diffractometer, SEM, TEM, an UV-Vis diffuse reflectance analyzer, and photoluminescence (PL) spectroscopy. Different doping concentrations of Al affect not only the existing form of Al atoms in the crystal but also the concentration of the intrinsic defects of ZnO, thus influencing the morphology of the hollow micro-spheres. The appropriate amount of Al doping provides the hollow spheres with a porous, loose morphology, showing the largest specific surface area, which significantly improves the absorbance of light and the number of reaction sites in photocatalysis. For the composite specimen, the introduction of Ag nanoparticles improves the absorbance of light in the visible region because of the surface plasmon resonance: in the PL measurements, because many electrons in the ZnO crystal flow to the surface of Ag nanoparticles due to the difference of energy levels between Ag and ZnO crystals, the intensity of the intrinsic and defect-related emissions of ZnO is reduced. The photocatalytic properties of the specimens were evaluated with the degradation of a methyl orange dye solution under simulated solar irradiation at room temperature. The specimen of porous ZnO hollow micro-spheres with 3% Al dopant concentration demonstrates excellent photocatalytic performance due to its large specific surface area. However, with the designed energy structure, the composite of porous ZnO hollow micro-spheres and Ag nanoparticles exhibits the best photocatalytic performance among the specimens tested by separating electrons and holes in the ZnO crystal. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)
WOS研究方向	Science & Technology - Other Topics ; Optics
语种	英语
出版者	SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
WOS记录号	WOS:000756604400002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155002]
专题	材料科学与工程学院土木工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou, Peoples R China; 2.Wuhan Text Univ, Hubei Key Lab Biomass Fibers & Ecotext Chem, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Yu, Fucheng,Wang, Bolong,Cui, Junpeng,et al. Structure and photocatalytic properties of the composite of Al-doped porous ZnO hollow micro-spheres and Ag nanoparticles[J]. JOURNAL OF NANOPHOTONICS,2021,15(4).
APA	Yu, Fucheng.,Wang, Bolong.,Cui, Junpeng.,Nan, Dongmei.,Li, Yuanmeng.,...&Liu, Yangshuo.(2021).Structure and photocatalytic properties of the composite of Al-doped porous ZnO hollow micro-spheres and Ag nanoparticles.JOURNAL OF NANOPHOTONICS,15(4).
MLA	Yu, Fucheng,et al."Structure and photocatalytic properties of the composite of Al-doped porous ZnO hollow micro-spheres and Ag nanoparticles".JOURNAL OF NANOPHOTONICS 15.4(2021).