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Efficient F-Doped BiVO4 Photocatalyst Synthesized by One-Step Alcohol-Hydrothermal Method
Author NameAffiliationE-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 
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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Chinese Journal of Inorganic Chemistry