负载型纳米TiO_2光催化降解溴甲酚绿的研究

Study on Degradation of Bromocresol Green Photocatalyzed by the Supported Nanometer TiO_2

采用平均粒径约为5nm,主要结构为锐钛矿型的纳米TiO2为光催化剂,以泡沫型复合镍板为载体对纳米TiO2进行了固定,并对固定后的纳米TiO2降解溴甲酚绿的能力进行了研究。实验结果表明:利用高压汞灯作为光源,以泡沫型复合镍板为载体的纳米TiO2对溴甲酚绿具有较好的降解能力。随着光照时间的增长,溴甲酚绿的分解越彻底。在提供氧的条件下,负载型纳米TiO2杀菌能力大大增强。实验还发现,在酸性环境下,负载型纳米TiO2对溴甲酚绿的降解较彻底。

Abstract：Nanometer TiO2, the major structure of which is anatase, with the average particle diameter about 5nm, was fixed on the composite board of Ni-Foam. And the ability to degrade bromocresed green was studied. The results showed that Nanometer TiO2 with carrier of composite board of Ni-Foam has fine ability to degrade bromocresed green with the light of mercury lamp, and the decomposition is more thorough with the increase of the time. With the supply of oxygen, the degrading ability of the supported nanometer TiO2 was increased markedly. And in acidic aquatic environment it was improved also.