以钛酸四丁酯、硝酸铁、硝酸铬为原料,采用改进的溶胶-凝胶法制备铁-铬共掺杂的二氧化钛纳米球.对该纳米球进行了结晶结构、形貌和光吸收性质方面的表征,测试了该纳米球在紫外-可见光照射下光催化产氢活性.结果表明,在掺杂总量不变的情况下,铁-铬共掺杂二氧化钛纳米球获得最好的光催化活性(133.6 μmol/(g· h)),并且具有优秀的光催化稳定性.%The Fe-Cr codoped TiO2 nanosphere was synthesized with titanium butoxide,Fe Ⅲ) nitrate nonahydrate,Cr(Ⅲ) nitrate nonahydrate by a modified sol-gel method.The crystal structure,morphology and optical absorption property of as-prepared nanosphere were characterized.And the photocatalytic hydrogen evolution was performed under UV-visible light illumination.The results indicated that the Fe-Cr codoped TiO2 nanosphere has the best photocatalytic hydrogen evolution activity (133.6 μmol/(g· h)) and also exhibits high reusability for photocatalytic reaction.
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