%0 Journal Article
%T Photocatalytic properties of Fe3+ doped TiO2/attapulgite composite material<br>Fe3+掺杂TiO2/凹凸棒复合材料的光催化性能
%A Min Shixiong
%A Wang Fang
%A Wei Liqiang
%A Wang Yongsheng
%A Feng Lei
%A Tong Yongchun
%A Han Yuqi
%A <br>敏世雄
%A 王芳
%A 魏立强
%A 王永生
%A 冯雷
%A 佟永纯
%A 韩玉琦
%J 环境工程学报
%D 2010
%I 
%X A series of Fe~(3+) doped TiO_2/attapulgite composite photocatalyst ( Fe~(3+) -TiO_2/ATP) were synthe-sized by acid-catalyzed sol-gel process. Their photocatalytic activity was evaluated by degrading methylene blue ( MB) in aqueous solution under visible light irradiation. The influences of TiO_2 loading amounts, Fe~(3+) doping amounts and calcination temperature were studied. Based on the above results, the preparation condition of com-posite photocatalyst was optimized by the orthogonal experiments ( L_25 ( 5~3) ) . The results of photocatalytic experi-ments showed that the degradation of MB on the composite catalysts followed the Langmuir-Hinshelwood ( L-H) first-order reaction model. The optimal photocatalytic activity of composite particles was realized when the TiO_2 loading amounts was 15% , Fe~(3+) doping amounts was 0.5% and calcination temperature was 550 ℃, and the de-termined kinetic parameters k_(app) and degradation efficiency( D_t) were 6. 09 × 10~(-3)min ~(-1) and 75. 88% after 4 h of visible light irradiation, respectively. Comparing with P25 (1. 51 × 10~(-3)min~(-1)) , the apparent reaction rate con-stant increased about 4. 03 times and the photodegradation efficiency increased about 45. 05% . Furthermore, the Fe~(3+) -TiO_2/ATP composite photocatalyst exhibited easy separation property comparing with P25. The advantages of composite photocatalyst revealed its great practical potential in wastewater treatment.
%K MB
%K visible light
%K Fe~(3+)-TiO_2/ATP composite photocatalyst
%K methylene blue
%K photocatalytic degra-dation<br>可见光
%K Fe3+-TiO2/ATP光催化剂
%K MB
%K 光催化降解
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=6F527B017F4BA4F09363DC8EC451AC49&yid=140ECF96957D60B2&vid=E158A972A605785F&iid=0B39A22176CE99FB&sid=D9202C57BAB9096F&eid=1A033C02510EFBE6&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=2&reference_num=20