Synthesis and photocatalytic properties of Cr-doped KSr2Nb3O10 for hydrogen production
Synthesis and photocatalytic properties of Cr-doped KSr2Nb3O10 for hydrogen production
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DOI：
10.1016/j.ijhydene.2011.03.050
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发表时间：
2012
影响因子：
7.2
通讯作者：
Yuchao Hu;P. Guo;Liejin Guo
中科院分区：
文献类型：
--
作者：
Yuchao Hu;P. Guo;Liejin Guo
本文采用固相法合成了一系列掺cr的层状铌酸盐，并用粉末x射线衍射、紫外-可见漫反射光谱和扫描电镜对其进行了表征。在20vol%甲醇水溶液中作为电子供体，在紫外光照射下测试了它们的光催化析氢活性。结果表明，Cr掺杂量对催化剂的光催化活性有重要影响。当掺杂量为1.25 mol%时，光催化活性最高。H+置换进一步提高了析氢速率。
A series of Cr-doped layered niobates were synthesized by solid state method in this paper and were characterized by powder X-ray diffraction, UV–vis diffuse reflection spectrum and scanning electron microscope. Their photocatalytic hydrogen evolution activities were tested in a 20vol% methanol aqueous solution as electron donor under UV light irradiation. The results proved that the Cr doping amount had an important effect on the photocatalytic activity of the catalysts. The highest photocatalytic activity was obtained when the doping amount was 1.25 mol%. H+replacement improved the hydrogen evolution rate further.