报道了采用高温扩散掺杂敏化法在金红石晶体表面掺入Cr离子、有效提高可见光响应的研究结果.分别利用UV-VIS、XFA、XRD和LRS等测试手段对样品进行了分析.结果表明Cr离子掺入晶体表面后以Cr2O3的形式与基体TiO2形成固溶体Cr2TiO5，提高了可见波段的光吸收，使原来位于410nm的TiO2的吸收边移到了750nm处，实现了与太阳光谱的匹配.
The visible-light absorption of rutile was raised through doping Cr ion into the surface of rutile crystal with high-temperature-diffusion-doping-sensitization technique. TiO2:Cr specimen was analyzed by means of UV-VIS,XFA,XRD,XPS and LRS,respectively. As a result,it is shown that after Cr ion is doped into the surface of the crystal,Cr ion exists in the solid-melting-state Cr2TiO5,which induces the original absorption edge(410nm) move to 750nm,and achieves match with solar spectrum and raises optical absorption to visible-light effectively.
参考文献
| [1] | Fujishima A,Honda K.Nature,1972,238: 37-38. |
| [2] | Ghosh A K,Maruska H D.J.Electrochem.Soc.,1977,124 (10): 1516-1522. |
| [3] | Blondeau G,Froelicher M,et al.J.Electrochem.Soc.,1979,126: 1592-1596. |
| [4] | Matsumoto Y,Kurimoto J,et al.J.Electrochem.Soc.,1980,127: 2148-2152. |
| [5] | O'Regan B,Gratezal M.Nature,1991,353: 73-77. |
| [6] | Taira S,Miki T,Yanagi H.Applied Surface Science,1999,143: 23-29. |
| [7] | Lin L B,Mo S D,Lin D L.J.Phys.Chem.Solids,1993,54 (8): 907-912. |
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