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负载型TiO₂/蛇纹石光催化降解4BS染料的研究

Photocatalytic Degradation of 4BS Dyes Using TiO₂/Serpentinite

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【Author】 XU Min, XU Ri-hong, LI Li-qiong (School of Biological and Chemical Engineering, Guangzhou University, Guangzhou 510405)

【机构】广州大学生物与化学工程学院化学系；广州大学生物与化学工程学院化学系广州510405；广州510405；广州510405；

【摘要】以蛇纹石为载体,利用TiOSO4为前驱体,采用水解-沉积法将TiO2超细粒子包覆在蛇纹石表面制得TiO2/蛇纹石负载型光催化剂。探讨了pH值、焙烧温度及光催化剂中TiO2与蛇纹石比例对偶氮直接耐酸大红4BS水溶液的光催化脱色降解的影响。结果表明,在pH为2～4,500℃条件下有明显地脱色效果。更多还原

【Abstract】 TiO₂/serpentinite was obtained by hydrolysis-precipitating method using TiOSO₄and natural serpentinite. The photocatalytic degradation of organic dyes 4BS were studied in TiO₂/serpentinite. Results showed the dyes were remarkably decolored in pH 2-4 and temperature 500℃ under a 500w high pressure mercury lamp.更多还原