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以钛酸四丁酯为原料 ,采用溶胶 凝胶法制备了二氧化钛 ,用发光材料Sr2 CeO4负载二氧化钛 ,经 4 5 0℃焙烧得到不同负载量的光催化剂 .以苯为模拟气体 ,在静态反应装置中考察了该催化剂对苯氧化的催化性能 .结果表明 ,二氧化钛负载在Sr2 CeO4上能显著提高对气相苯的光催化降解性能 ,二氧化钛负载量为 1 0 %时催化剂活性最高 ,在反应的 6h内未观察到催化剂有失活的现象 .
Titanium tetrabutoxide was used as raw material to prepare titanium dioxide by sol-gel method, and titania was loaded with Sr2 CeO4 as luminescent material and calcined at 450 ℃ to obtain photocatalysts with different loadings.With benzene as the simulated gas, The results showed that titania supported on Sr2 CeO4 could significantly improve the photocatalytic degradation of benzene in the gas phase. When the titania loading was 10%, the catalyst activity was the highest. Within 6h of reaction No catalyst deactivation was observed.