论文部分内容阅读
研究了以自制掺铁的锐钛矿型TiO2(即A-TiO2)光催化降解对硝基苯酚的动力学过程。结果表明:在可见光照射下,对硝基苯酚溶液为20mg·L-1、溶液调节为酸性(pH=2)、自制的掺铁0.1%(摩尔分数)A-TiO2的投入量1.0g·L-1、室温下搅拌下反应200min的条件下,对硝基苯酚的光催化降解的表观反应速率常数k(0.0050min-1)和降解率(64.52%)最大,拟合可见光下铁掺杂TiO2降解对硝基苯酚为一级反应。
The kinetic process of photocatalytic degradation of p-nitrophenol with anatase-type TiO2 (A-TiO2) made by ourselves was studied. The results showed that under the visible light irradiation, the dosage of p-nitrophenol solution was 20 mg · L-1, the solution was adjusted to be acidic (pH = 2), the amount of homemade 0.1% -1, the apparent reaction rate constants k (0.0050min-1) and the degradation rate (64.52%) of p-nitrophenol under photocatalytic degradation under the conditions of 200min stirring at room temperature were the best. Degradation of p-nitrophenol by TiO2 is a first order reaction.