大比表面积TiO2 纳米球的合成及其可见光降解Cr(VI) 和双酚A的协同作用机理

doi:10.3969/j.issn.1007-2861.2014.03.008

Abstract

Abstract: Titanium dioxide (TiO^₂) nanospheres were successfully synthesized by sol-gel combination with hydrothermal treatment using octadecylamine template and tetrabutyl titanate precursor, and the effects of calcination temperature on the morphology of titanium dioxide. The results show that at the calcination temperature of 350 C, the prepared TiO₂ nanospheres get the best morphology and their specific surface area can reach 159.878 m²/g, three time higher than that of Degussa P25 (54.041 m²/g). Moreover, photocatalytic properties of the TiO₂ nanospheres were tested through degradation of Cr(VI) and bisphenol
A (BPA) under visible light. The results show that the TiO₂ nanospheres can effectively degrade Cr(VI) and BPA in water, and the two pollutants’ degradation has synergistic effect. In addition, TiO₂ nanospheres surface area determines its photocatalytic properties, and TiO2 nanospheres prepared under 350 C calcination conditions have optimal photocatalytic.

Key words: bisphenol A (BPA), TiO₂, visible light photocatalysis

CLC Number:

O 613

TRONGANH Nguyen, WANG Yu-jia, WANG Bin, CHENG Ling-li,DING Nan, JIAO Zheng. Synthesis of TiO2 nanospheres with large surface area for visible light synergistic catalytic degradation of Cr(VI) and bisphenol A[J]. Journal of Shanghai University（Natural Science Edition）, 2015, 21(4): 490-502.

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Synthesis of TiO2 nanospheres with large surface area for visible light synergistic catalytic degradation of Cr(VI) and bisphenol A

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