%0 Journal Article
%T Photocatalytic Degradation of Ethylene over Titania-based Photocatalysts<br>TiO2/多孔硅胶对乙烯光催化降解的研究
%A LIN Lan-yu
%A HU Chun
%A WANG Zhen-yu
%A HAO Zheng-ping
%A <br>林兰钰
%A 胡春
%A 王震宇
%A 郝郑平
%J 环境科学
%D 2004
%I 
%X The photocatalytic degradation of ethylene over titania-based photocatalysts was studied under a non-circulating system using visible or near-UV light. The roles of the reaction temperature and the inlet concentration of ethylene and the influence of different light source were investigated. Then the efficiency of noble metals-doped photocatalyst was compared with that of the bare one. The experiment results indicated that when the inlet concentration was in range of 38-188 mg/m3 the photo-degradation efficiency of the bare photocatalyst dropped linearly and very slowly with the increase of inlet concentration of ethylene; the degradation efficiency increased as raising the reaction temperature; noble metals not only decreased the recombination of electron-hole pairs, but also increased the absorption for visible light, leading to the photocatalytic efficiency in several-tens times higher in visible light.
%K titania-based photocatalysts
%K noble metals
%K photocatalytic degradation
%K air purification<br>钛基催化剂
%K 贵金属
%K 光催化
%K 空气净化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=1687545576A240B2&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=E158A972A605785F&sid=03F1579EF92A5A32&eid=6270DC1B5693DDAF&journal_id=0250-3301&journal_name=环境科学&referenced_num=5&reference_num=12