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Citation: ZHANG Yue, ZHAO Xue-Jiao, DUAN Yuan-Shou, SU Xiu-Rong. Ag2O Doped Bi2MoO6: Preparation and Photocatalytic Activity for Fulvic Acid Degradation[J]. Chinese Journal of Inorganic Chemistry, ;2015, (5): 939-946. doi: 10.11862/CJIC.2015.108 shu

Ag2O Doped Bi2MoO6: Preparation and Photocatalytic Activity for Fulvic Acid Degradation

  • 1.

    College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong 271018, China

  • Corresponding author: SU Xiu-Rong, 
  • Received Date: 5 December 2014
    Available Online: 15 February 2015

    Fund Project: 国家自然科学基金(No.U1362202) (No.U1362202)山东省自然科学基金(No.ZR2011BQ014) (No.ZR2011BQ014)中央高校基本科研业务费专项资金(No.12CX04093A)资助项目。 (No.12CX04093A)

  • We use ammonium molybdate, bismuth nitrate and silver nitrate as raw materials, hexadecyl trimethyl ammonium bromide(CTAB) as auxiliary surfactant to synthesize photocatalyst Ag2O-Bi2MoO6 via hydrothermal method. The photocatalyst was characterized by XRD, SEM and UV-Vis spectroscopy. The photocatalytic oxidation of fulvic acid in water was performed over the catalyst. The results show that the surface of pure bismuth molybdate is smooth while on the surface of Ag2O-Bi2MoO6 there are some well-distributed small grains. The XRD pattern of Ag2O-Bi2MoO6 shows diffraction peaks of Ag2O. Compared with the pure sample, Ag2O-Bi2MoO6 has much higher photocatalytic activity under visible light, and when its doping level is 1.5%, it shows the highest activity. The best catalyst concentration is 0.6 g·L-1. The decrease in pH value of the solvent and initial concentration of fulvic acid will promote the removal of fulvic acid. The degradation process of fulvic acid conforms the first order kinetics, and the fitting equation is y=-0.0195x. A Photobacterium phosphoreum toxicity test results show that the toxicity of the 2 h photocatalytic degradation product is reduced by about 90% compared to the un-degraded fulvic acid.
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