摘要
以ＰｂＴｉＯ＿３为光催化剂，对多种水溶性染料的光催化降解反应进行了研究，结果表明：光降解脱色效率与染料溶液的ｐＨ值、光照时间、光源种类及催化剂用量等因素有关。染料溶液浓度为１０ｍｇ／Ｌ，ｐＨ＝６，催化剂用量为１００ｍｇ／５０ｍＬ，直接以太阳光作光源，光照１ｈ以后，脱色率达９０％以上，有机染料中硫和氮元素转化为ＳＯ和ＮＯ的生成率分别为８５％和６５％。
The photocatalytic destruction and decolorization of several water-soluble dyesunder natural sun light and 450W high pressure Hg-lamp irradiation in the presence of photo-catalyst PbTiO_3 were studied.The experiments show that the efficiency of decolorization isrelated to the pH value of dye solution,irradiation time,as well as the intensity of irradia-tion. After irradiation with sun light for 1h,the decolorizing efficiency was up to 90% whenthe concentration of dyes was 10mg/L and the amount of catalyst was 100mg in 50mL dyesolution.
出处
《应用化学》
CAS
CSCD
北大核心
1995年第6期29-32,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金及天津市21世纪青年科学基金资助项目
关键词
水溶性染料
光催化降解
钛酸铅
water-soluble dye ,photocatalytic destruction,PbTiO_3,band gap
