微乳液法制备TiO_2纳米粉体及其光催化性能研究

Study on Micro-emulsion Synthesis of TiO_2 Nanopowders and Its Photocatalysis Property

本文以TiC l4为原料,采用阴离子表面活性剂十六烷基三甲基溴化铵为主的微乳体系制备了TiO2的前驱物,并在500℃合成了平均粒径为10nm的纳米锐钛型TiO2微粉,同时利用纳米TiO2粉体对染料罗丹明B进行了光催化降解,研究了其光催化性能,表明在1 h内对罗丹明B的光催化降解率可达98%以上。

Using TiCl4 as starting materials, precursors of TiO2 were prepared by a microemulsion technique in abutanol/hexadecyl trimethyl ammonium bromide （ CTAB ）/cyclohexane/water microemulsion. The anatase TiO2 nanopowders with average diameter of 10nm were synthesized at 500℃ for 2h. The photocatalysis property of as-prepared powders was studied and the results showed that the photocatalysis degradation rate of rhodamine B could reach 98% in the presence of TiO2 nanopowders.