TiO_2/凹土光催化剂降解活性深蓝K-R动力学

Dynamics of TiO_2/Attapulgite Photocatalyst Decolorizing Reactive Deep Blue K-R

通过溶胶-凝胶法制备纳米TiO2,并将其负载在凹土上,制得TiO2/凹土光催化剂,用其处理活性深蓝K-R模拟印染废水,通过改变溶液初始浓度,考察TiO2/凹土光催化剂对活性深蓝K-R模拟印染废水的脱色情况,并进行动力学研究。结果表明:溶液初始浓度越低相对去除率越高,但绝对去除量随初始浓度的增大而增大;光催化降解符合一级动力学方程。

TiO2/Attapulgite photocatalyst loaded different TiO2 was prepared through attapulgite loading TiO2 Nanopowder synthesized by Sol-gel, using the samples of TiO2/attapulgite prepared as photocatalysts to decolorize reactive deep blue K - R. The effects of some factors, such as reactive deep blue K - R initial concentration, and light intensity on the photodegradation are discussed. The experimental results show that relatively decolorization ratio increases as initial concentration reduces, but absolute quantity increases as initial concentration increases; the degradation reaction can be expressed by the first-order dynamics equation.