期刊
RSC ADVANCES
卷 6, 期 5, 页码 3600-3607出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra22912j
关键词
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资金
- National Natural Science Foundation of China for Youths [21407065, 21507046]
- Natural Science Foundation of Jiangsu Province for Youths [BK20140533]
- China Postdoctoral Science Foundation [2014M551520, 2015T80514]
- Jiangsu University Scientific Research Funding [14JDG052]
In this study, a new type of high-performance visible light photocatalyst Fe2O3/Ag3VO4 was prepared by a two-step method. Fe2O3 was prepared by a solvothermal method first and then the Fe2O3/Ag3VO4 photocatalyst was synthesized with different mass ratios by a simple chemical precipitation method. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-vis absorption spectroscopy (in DRS mode), and electrochemical impedance spectroscopy (EIS) were applied to characterize the as-prepared samples. The results showed that the as-prepared photocatalyst was uniform in the shape of particles. Photocatalytic properties of the as-prepared samples were evaluated by degrading RhB under visible light. The results showed that 1% Fe2O3/Ag3VO4 composite presented the highest photocatalytic activity. After 60 min, 96.1% of RhB was degraded by 1% Fe2O3/Ag3VO4 composite. Finally, trapping experiments confirmed that the hole (h(+)) and superoxide free radical (center dot O-2(-)) were the main active species in degrading RhB.
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