Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 27    No. 9    September 2017

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Effects of Ni doping contents on photocatalytic activity of B-BiVO4 synthesized through sol-gel and impregnation two-step method
Min WANG, Guang-jun YANG, Mei-yan YOU, Yuan-hua XIE, You-zhao WANG, Jin HAN, Tong ZHU

School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110165, China

Abstract:To enhance the photocatalytic activity of B-BiVO4, Ni-doped B-BiVO4 photocatalyst (Ni-B-BiVO4) was synthesized through sol-gel and impregnation method. The photocatalysts were characterized by XPS, XRD, SEM, EDS, BET and UV-Vis DRS techniques. The results showed that single or double doping did not change the crystalline structure and morphology, but the particle size decreased with Ni doping. The band gap energy absorption edge of Ni-B-BiVO4 shifted to a longer wavelength compared with undoped, B or Ni single doped BiVO4. More V4+ and surface hydroxyl oxygen were observed in BiVO4 after Ni-B co-doping. When the optimal mass fraction of Ni is 0.30%, the degradation rate of MO in 50 min is 95% for 0.3Ni-B-BiVO4 sample which also can effectively degrade methyl blue (MB), acid orange (AOII) II and rhodamine B (RhB). The enhanced photocatalytic activity is attributed to the synergistic effects of B and Ni doping.


Key words: co-doping; Ni doping; BiVO4; photocatalyst; sol-gel method; impregnation method

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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