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2018 Volume 43 Issue 5
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YANG Jing-jing1, WEI Ying-ying1, HE Yong-ping2, JIANG Zhi-yong1, HAN Yu-hua1, ZHANG Jing1, YANG Bing1. On Photocatalytic Degradation of Methylene Blueby SiC/BiVO4 Composite[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(5): 31-36. doi: 10.13718/j.cnki.xsxb.2018.05.006
Citation: YANG Jing-jing1, WEI Ying-ying1, HE Yong-ping2, JIANG Zhi-yong1, HAN Yu-hua1, ZHANG Jing1, YANG Bing1. On Photocatalytic Degradation of Methylene Blueby SiC/BiVO4 Composite[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(5): 31-36. doi: 10.13718/j.cnki.xsxb.2018.05.006
shu

On Photocatalytic Degradation of Methylene Blueby SiC/BiVO4 Composite

  • 1. Department of Environmental and Quality Inspection, Chongqing Chemical Industry Vocational College, Chongqing 401228, China;
    2. Chongqing Petroleum Co., Ltd., China National Aviation Fuel, Chongqing 401120, China

More Information
  • Received Date: 26/11/2017
  • This paper reports the results of the photocatalytic degradation efficiency of methylene blueunder filament lamp irradiation using a composite catalyst of SiC/BiVO4 with different mass ratios. It was found that the SiC/BiVO4 heterostructure with the ratio of 2:1 exhibited the best photocatalytic degradation efficiency reaching up to 90% for 60 min irradiation, and the photo-degradationrate constant was determined to be 0.02305 min-1, which is 22 times higher than that of pure SiC. Meanwhile, the good distribution of BiVO4, strong light absorption and low carrier recombination were observed in the heterostructure by scanning electron microscope (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The results demonstrate that SiC and BiVO4 have appropriate band-edges in forming an efficient heterojunction, which benefits for the enhanced photocatalytic degradation performance and will prove to be helpful in designing new photocatalytic systems.
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On Photocatalytic Degradation of Methylene Blueby SiC/BiVO4 Composite

  • Received Date: 26/11/2017

Abstract: This paper reports the results of the photocatalytic degradation efficiency of methylene blueunder filament lamp irradiation using a composite catalyst of SiC/BiVO4 with different mass ratios. It was found that the SiC/BiVO4 heterostructure with the ratio of 2:1 exhibited the best photocatalytic degradation efficiency reaching up to 90% for 60 min irradiation, and the photo-degradationrate constant was determined to be 0.02305 min-1, which is 22 times higher than that of pure SiC. Meanwhile, the good distribution of BiVO4, strong light absorption and low carrier recombination were observed in the heterostructure by scanning electron microscope (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The results demonstrate that SiC and BiVO4 have appropriate band-edges in forming an efficient heterojunction, which benefits for the enhanced photocatalytic degradation performance and will prove to be helpful in designing new photocatalytic systems.

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