Study on application of (NH4)3PW11O39Sn/TiO2 composites in photocatalytic degradation of dye-containing wastewater
YUE Lin1, ZHANG Ying2, JIANG Yong-feng2, SUN Wen-hui1, LI Zai-xing1, LIAN Jing1, LUO Xiao1
1. Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2. School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
Abstract: (NH4)3PW11O39Sn is loaded on TiO2 that is prepared through bio-template method,and the product (NH4)3PW11O39Sn/TiO2 composite with porous structure is obtained.The microstructure and morphology of the composite are characterized by XRD,DRS,SEM,TEM and XPS.Calculated by means of Tauc Plot method,the energy gap and absorption wavelength of (NH4)3PW11O39Sn/TiO2 are 2.45 eV and 506 nm,respectively.The effects of the dosage ratio of (NH4)3PW11O39Sn/TiO2,initial pH and the solution concentration on the photocatalytic degradation of AR3R are investigated by the visible light photocatalytic performance experiments.The results show that the degradation efficiency of AR3R reaches the best over the composite that the mass ratio of (NH4)3PW11O39Sn and TiO2 is 1:1.The degradation rate of AR3R can reach around 100% after reacting for 30 min under visible light.It is demonstrated by free radical capture experiments that h+ and·OH are the key active radicals while·O2- plays a supplementary role during the photocatalytic degradation process.
岳琳, 张迎, 蒋永丰, 孙文会, 李再兴, 廉静, 罗晓. (NH4)3PW11O39Sn/TiO2复合材料光催化降解染料废水的研究[J]. 现代化工, 2020, 40(3): 152-156,161.
YUE Lin, ZHANG Ying, JIANG Yong-feng, SUN Wen-hui, LI Zai-xing, LIAN Jing, LUO Xiao. Study on application of (NH4)3PW11O39Sn/TiO2 composites in photocatalytic degradation of dye-containing wastewater. Modern Chemical Industry, 2020, 40(3): 152-156,161.
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