| Gd3+掺杂TiO2纳米复合材料的可见光响应性能 |
| Visible Response Performance of TiO2 Nanocomposites Doped with Gd3+ |
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| 摘要: 采用溶胶-凝胶技术，在钛酸四丁酯(TBOT)的水解过程中，加入硝酸钆(Gd(NO3)3)，得到具有可见光响应活性的Gd3+/TiO2复合材料。应用TEM、XRD、TG-DTA和UV-Vis等手段对纳米TiO2复合材料进行了表征。当Gd3+的掺杂量为0.5%时，Gd3+/TiO2复合材料在550 nm附近产生宽强吸收带。Gd3+进入TiO2晶格中，形成了新的掺杂能级(Eg=1.27 eV)。适量Gd3+掺杂的纳米TiO2复合材料的光催化性能优于纯TiO2粉体材料。 |
| 关键词: Gd3+掺杂 可见光响应 光催化 溶胶-凝胶法 |
| 基金项目: |
| Abstract: The Gadolinium nitrate was added into the hydrolytic process of tetrabutyl titanate (TBOT) to synthesize the Gd3+/TiO2 composite material with visible response activity by sol-gel technology. Some means, such as TEM, XRD, TG-DTA and UV-Vis were used to character the composite material. The results showed, when the doping amount of Gd3+ was 0.5%, the maximum absorption of composite material appeared in about 550 nm, the Gd3+ might enter into the crystalline lattice of TiO2 and form a new bandwidth (Eg=1.27 eV). The photocatalytic activity of Gd3+/TiO2 composite material was better than that of pure TiO2 particles. |
| Keywords: doping with Gd3+ visible response activity photocatalysis sol-gel technology |
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| 张 霞,孟 皓,曹向会.Gd3+掺杂TiO2纳米复合材料的可见光响应性能[J].无机化学学报,2009,25(11):1947-1952. |
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