纳米TiO_2合成及其吸附催化降解甲醛的研究

The Synthesis of Nanomaterial Titanium Dioxide and the Studies on Its Adsorption and Catalytic Degradation of Formaldehyde

本文以TiCl_4为前躯体合成了具有紫外-可见光活性的纳米TiO_2.以纳米TiO_2对甲醛的吸附降解率为指标,用单因素法优化其合成条件.结果表明,最佳合成工艺为:以盐酸为溶剂,氨水为沉淀剂,pH值为10,煅烧温度为600℃.在此条件下制备的TiO_2具有优良的吸附甲醛性能,并且对其有很好的紫外-可见光催化降解活性.

In this paper, nano-TiO,, which has UV-visible light activity was synthesized using TIC14 as precursor. With the adsorption degradation rate of nano-TiO2 for formaldehyde as an indicator, the single factor method is applied to optimize the synthesis conditions of nano-TiO,. The results show that the optimal synthesis conditions are： hydrochloric acid as the solvent, ammonia as the precipitating agent, pH value is 10, and calcination temperature is 600℃. The obtained nano-TiO_, has excellent adsorption performance for formaldehyde and good UV-visible light catalytic degradation activity.