摘要
为了研究以天然斜发沸石负载TiO2 制备光催化剂 ,以对甲基橙溶液的光催化降解为光催化功能检验 ,太阳光为光源 ,对催化剂的合成条件及其催化活性的影响因素进行了探讨 .用脱色率及COD去除率对催化剂进行了性能评价 ,以XRD、IR及比表面积对样品进行了表征 .研究结果表明 :由钛酸四丁酯与斜发沸石复合制备的催化剂在 1 2 0℃下干燥 6h后经 2 0 0℃焙烧具有最大的光催化活性 ;甲基橙溶液的降解率随着TiO2 /沸石、外加氧化剂H2 O2 的增多而增大 ,但过量的H2 O2 也会抑制沸石载TiO2 的光催化活性 ;甲基橙溶液的 pH值为 2～
This paper studied preparing photocatalyst supported on natural clinoplilolite,photocatalysis degrading to methyl orange solution as photocatalysis function test,solar as light resource,explored the synthesize condition and affect factors of its catalysis activity.The capability of catalyst was evaluated by decolor rate and COD removal rate.The samples was described by XRD、IR and specific surface area.Studied result showed that catalyst prepared by combination of tetrabutyl titanate and natural clinoplilolite dryed under 120℃ for 6 hours then calcined under 200℃ had the best photocatalysis activity.Degrading rate of methyl orange solution increased with the quantity of TiO 2/zeolite and additional oxidant H 2O 2 increasing,but superfluous H 2O 2 can also restrain the photocatalysis activity of titanium dioxide supported on clinoplilolite.Methyl orange solution had the best degrading rate as pH value between 2 to 5.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第4期113-116,共4页
Environmental Science
基金
国家自然科学基金资助项目 (4 0 1 72 0 2 0 )
关键词
甲基橙
光催化降解
斜发沸石
二氧化钛
methyl orange
photocatalysis degrading
clinoplilolite
titanium dioxide
