采用共沉淀法制备了金属离子双掺杂的TiO2光催化剂,通过XRD,TEM,BET(表面积测定)和DRS(紫外-可见漫反射)测试手段对样品进行分析,以甲基橙为目标污染物对其进行光催化降解.研究结果表明:光催化活性是多种因素协同作用的结果,煅烧温度、掺杂以及样品的光吸收对光催化性能都产生影响.金属离子双掺杂可使光催化剂在可见光区具有光响应,在荧光汞灯激发下,其催化活性优于未掺杂的样品.
参考文献
| [1] | Bhatkhande D S;Pangarkar V G;Beenackers .Photocatalytic Degradation for Environmental Application- a Review[J].Journal of Chemical Technology and Biotechnology,2001,77:102-116. |
| [2] | Wang J A;Limas-Ballesteros R .Quantitative Ddtermination of Titanium Lattice Defects and Solid-State Reaction Mechanism in Iron-Doped TiO2 Photoeatalysts[J].Journal of Physical Chemistry B,2001,105:9692-9698. |
| [3] | Kato H;Kudo A .Visible-Light-Response and Photocatalytic Activities of TiO2 and SrTiO3 Photocatalysts Codoped with Antimony and Chromium[J].Journal of Physical Chemistry B,2002,106:5029-5034. |
| [4] | Kim S J;Park Y H;Jeong Y H .Homogeneous Precipitation of TiO2 Ultrafine Powders from Aqueous TiOCl2 Solution[J].Journal of the American Ceramic Society,1999,82:927-931. |
| [5] | Kukovecz A;Konya Z;Monter D et al.UV-VIS Investigations on Co,Fe and Ni Incorporated into Sol-Gel SiO2-TiO2 Matrices[J].Journal of Molecular Structure,2001,563:403-407. |
| [6] | Reddy E P;Davydov L;Smirniotis P G .Characterization of Titania Loaded V-,Fe-,and Ct-Incorporated MCM-41[J].Journal of Physical Chemistry B,2002,106:3394-3401. |
| [7] | Serpone N;Lawless D .Spectroscopic,Photoconductivity,and Photocatalytic Studies of TiO2 Colloids[J].LANGMUIR,1994,10:643-652. |
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