Flower−like 3D CuO microsphere acting as photocatalytic water oxidation catalyst
Flower−like 3D CuO microsphere acting as photocatalytic water oxidation catalyst
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DOI：
10.1016/s1872-2067(15)61012-9
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发表时间：
2016
影响因子：
16.5
通讯作者：
Xiaoqiang Du;Jingwei Huang;Yingying Feng;Yong Ding
中科院分区：
文献类型：
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作者：
Xiaoqiang Du;Jingwei Huang;Yingying Feng;Yong Ding
合成了花状三维CuO微球，并将其用于可见光下水的光催化氧化.通过扫描电子显微镜、透射电子显微镜、红外、粉末X射线衍射、电子色散谱、拉曼和X射线光电子能谱（XPS）对CuO微球的结构进行了表征。这是第一次证明氧化铜在近中性条件下作为光催化水氧化催化剂。CuO微球在硼酸盐缓冲溶液中的催化活性最好，O2产率为11.5%。XPS分析表明，CuO在光催化反应前后的表面性质没有发生变化，显示出良好的催化剂稳定性。提出了CuO微球光催化水氧化反应机理。
Flower−like 3D CuO microspheres were synthesized and used to photo−catalyze water oxidation under visible light. The structure of the CuO microspheres was characterized by scanning electron microscopy, transmission electron microscopy, infrared, powder X−ray diffraction, electron dispersive spectroscopy, Raman and X−ray photoelectron spectroscopy (XPS). This is the first time that a copper oxide was demonstrated as a photocatalytic water oxidation catalyst under near neutral conditions. The catalytic activity of CuO microspheres in borate buffer shows the best performance with O2yield of 11.5%. No change in the surface properties of CuO before and after the photocatalytic reaction was seen by XPS, which showed good catalyst stability. A photocatalytic water oxidation reaction mechanism catalyzed by the CuO microspheres was proposed.