摘要
以新型载银ＴｉＯ２为催化剂，采用高压汞灯为光源对染料水溶液进行光催化降解、实验结果表明。采用ＴｉＯ２催化剂使直接耐酸大红（３５ｍｇ／Ｌ）．直接耐晒翠蓝（５０ｍｇ／Ｌ）和直接黑（５０ｍｇ／Ｌ）染料溶液脱至无色的时间分别为３５ｍｉｎ、６０ｍｉｎ及６０ｍｉｎ，而采用载银ＴｉＯ２催化剂，上述染料溶液脱至无色的时间分别为２０ｍｉｎ、３０ｍｉｎ及２０ｍｉｎ。探讨了ｐＨ、光强、催化剂用量及灼烧温度等对催化降解的影响。
Photodegradation of dyes in aqueous solution wasinvestigated by irradiating with a 300 watts highpressure mercury lamp and using silver loaded titanium as a catalyst. The results show that theAg loaded TiO2 had a higher catalytic activitythan a pure TiO2. An aqueous solution containing50 mg/L of dye could be decoloured over a Agloaded TiO2 catalyst with a 40- 60 min irradiation, which was 15-40 min less than that in thecase of using a pure TiO2 as a catalyst. The effects of tempreture,pH, photo-intensity andquantity of catalyst agent were also investigated.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第2期15-18,共4页
Environmental Science
基金
国家自然科学基金
