纳米V^(5+)/TiO_2制备及光催化性能研究

STUDY ON V^(5+) DOPED TiO_2 POWDERS ON THE PHOTOCATALYTIC PROPERTY

钒改性TiO2光催化性能有很大的争议,基于此,本文采用溶胶—凝胶法制备了0.8%掺杂量的光催化剂,通过XRD、TEM和TG—DTA测试进行表征,并将所制备催化剂应用于氯苯的降解实验。结果表明:掺杂V5+为0.8%的TiO2光催化剂,3h即可使得氯苯的降解率达到28%,动力学研究表明,该反应满足伪一级动力学。

There are great disputes about the photocatalytic property of V^5＋ doped TiO2 powders. In this paper, V^5＋ doped TiO2 photocatalyst was made by sol -gel method. The structure was characterized through TEM and XRD. And MBA degradation experiment was carried out to investigate the photocatalytic performance of the catalysts. The results indicated that the better degradation effect was reached 28% in 3 hours and the reaction is obeyed the first order.