天然斜发沸石负载TiO2的光催化性能

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120℃下干燥6h后经200℃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H₂O₂的增多而增大,但过量的H₂O₂也会抑制沸石载TiO₂的光催化活性;甲基橙溶液的pH值为2～5时具有最大的降解性.

Photocatalysis Characterization of Titanium Dioxide Supported on Natural Clinoplilolite

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 degrees C for 6 hours then calcined under 200 degrees C had the best photocatalysis activity. Degrading rate of methyl orange solution increased with the quantity of TiO2/zeolite and additional oxidant H2O2 increasing, but superfluous H2O2 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.