摘要：以四氯化钛为前驱体,采用水解沉淀法在海泡石粉体上负载纳米TiO₂,从而制备纳米TiO₂-海泡石复合材料,并以罗丹明B废水为降解对象,通过试验研究各种影响因素对纳米TiO2-海泡石复合粉体材料光催化性能的影响。结果表明:当各影响因素在适当的反应条件下时,纳米TiO₂-海泡石复合粉体材料对罗丹明B废水的光降解率达到95%以上。

关键词： 海泡石；纳米TiO_2；光催化；降解

Abstract：TiO₂ nano-particles were loaded on the supporting body of sepiolite particles by the hydrolysis precipitation method using TiCl₄ as precursor and the nano-meter TiO₂ -sepiolite composite powder was prepared. The influence of the elements on the photocatalytic activities of TiO₂ films were investigated by the degradation of rhodamine B. The results indicated that the degradation rate of the composite powder for rhodamine B was more than 95% in the proper conditions. 

Keywords：sepiolite； TiO₂ nano-particles； photo-catalysis； degradation