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Efficient F-Doped BiVO4 Photocatalyst Synthesized by One-Step Alcohol-Hydrothermal Method |
Author Name | Affiliation | E-mail | JIANG Hai-Yan | College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | ZHANG Fan | College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | YU Shu-Guang | College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, China | yushuguang_2000@163.com | LI Yu-Zhen | College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China | liyuzhen123456@126.com |
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Abstract: F-doped BiVO4 photocatalysts were fabricated by using a simple one-step alcohol-hydrothermal method with NH4F as the precursor of the dopant. The physicochemical properties of the photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis), and photoluminescence spectra (PL). Their photocatalytic activities were determined through the degradation of phenol in the presence of a small amount of H2O2 under visible-light illumination. It is found that compared to the un-doped BiVO4 sample, the F-doped BiVO4 samples retained the monoclinic structure and had higher crystallinity, surface oxygen vacancy densities and separation efficiency of photogenerated charge carriers, stronger optical absorbance performances, and lower bandgap energies. Among these F-doped BiVO4 samples, the F-doped BiVO4 sample (nominal nF/nBi=1.0, bandgap energy=2.43 eV) exhibited the best photocatalytic performance (the conversion of phenol up to 95% in 90 min), due to the highest crystallinity, surface oxygen vacancy density, and separation efficiency of photogenerated charge carriers, the strongest optical absorbance performance, and the lowest bandgap energy. |
Keywords: one-step alcohol-hydrothermal method F-doped BiVO4 photocatalysis phenol photodegradation |
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JIANG Hai-Yan,ZHANG Fan,YU Shu-Guang,LI Yu-Zhen.Efficient F-Doped BiVO4 Photocatalyst Synthesized by One-Step Alcohol-Hydrothermal Method[J].Chinese Journal of Inorganic Chemistry,2019,35(4):695-702. |
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