The photoreduction method was used to reduce Ag+ in AgCl to Ag0,and at the same time,it was successfully loaded on the surface of titanate BaTiO3 to prepare BaTiO3/Ag/AgCl ternary composite photocatalyst with high performance.Using X-ray diffraction (XRD),field emission scanning electron microscope (FE-SEM),X-ray electron spectroscopy (XPS),ultraviolet-visible diffuse reflectance spectroscopy and fluorescence spectroscopy,the phase structure,morphology,valence state of element and optical properties of the photocatalyst were characterized.The performance of the photocatalyst was explored by degrading rhodamine B (Rh B) solution under visible light.The results shown that AgNO3 was used as the silver source and HCl as the precipitant to obtain AgCl,and load it on the surface of BaTiO3.When n(AgNO3)∶n(BaTiO3)=20∶100 and the photoreduction time was 30min,the obtained 20% BaTiO3/Ag/AgCl had the best performance.After 75min of visible light irradiation,the degradation rate of Rh B reached 98.1%.The capture agent experiment shown that O-2 was the main active species.
Su Xiaoyan, Fan Guodong, Pan Qianhong, Li Nan, Zhang Han
. Preparation and performance of BaTiO3/Ag/AgCl composite photocatalyst[J]. New Chemical Materials, 2021
, 49(12)
: 204
-209
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.12.043
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