title: Photocatalytic degradation and toxic effects of Ag-doped ZnO nanocrystallites.
abstract: Ag-doped ZnO nanocrystallites were synthesized from the precursor of Ag-doped zinc nitrate hexahydrate by applying hybrid induction and laser heating (HILH) techniques. The physical properties of prepared nanocrystallites were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). Silver ions doping can greatly improve the photocatalytic efficiency of ZnO nanocrystallites. This was attributed to the change of surface properties of metal ions doped semiconductor, such as O vacancies, crystal deficiencies and increased specific surface area (SSA). Increasing the amount of silver ions resulted in increased lattice deficiency and hence enhanced the photocatalytic activity. UV-Vis methods were used to detect intermediates during the degradation of DBP. The results demonstrated that the degradation rate of DBP changed over time in line, this process was basically completed in 60 mins. The acute toxicities of several silver ions doped ZnO nanocrystallites were also investigated in this study by using Scenedesmus quadricauda.
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Qi
authors.forename: Yulong
authors.initials: Y
authors.lastname: Hu
authors.forename: Hongfang
authors.initials: H
authors.lastname: Liu
authors.forename: Zehua
authors.initials: Z
authors.lastname: Dong