采用溶胶-凝胶法制备了系列稀土(La、Eu、Nd、Tb、Er)和硫共掺杂TiO2光催化剂RE/S/TiO2.通过紫外-可见(UV-Vis)漫反射、X射线衍射(XRD)对催化剂进行了表征.以EDTA为电子给体,考察了光催化剂在可见光照射下的制氢活性.研究结果表明,S/TiO2具有可见光活性,稀土掺杂进一步提高了S/TiO2可见光活性,其活性顺序依次为Eu/S/TiO2 ＞La/S/TiO2 ＞Nd/S/TiO2 ＞Tb/S/TiO2＞ Er/S/TiO2.与纯TiO2和S/TiO2光催化剂相比,稀土掺杂使催化剂的粒径减小,晶格畸变应力增大,从而提高了催化剂可见光制氢活性.
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