Achievement of High Photocatalytic Performance to BaTi4O9 Toward Overall H2O Splitting
Achievement of High Photocatalytic Performance to BaTi4O9 Toward Overall H2O Splitting
复制标题
BaTi4O9 实现整体 H2O 分解的高光催化性能
DOI：
10.1002/cctc.201901564
复制
发表时间：
2019
期刊：
影响因子：
4.5
通讯作者：
Sakata Yoshihisa
中科院分区：
文献类型：
--
作者：
Hiramachi Yuichi;Fujimori Hirotaka;Yamakata Akira;Sakata Yoshihisa
研究了BaTi 4 O 9光催化分解水的活性。从助催化剂的评价来看，Rh0.7Cr1.3O3是优选的。然而，该助催化剂随着光催化反应的进行而降解。当CoOx作为表面上的O2析出反应的助催化剂共负载时，可以证实光催化反应的稳定进行。为了提高BaTi 4 O 9与Rh 0. 7 Cr 1. 3 O3和CoOxco-催化剂对H2O总分解的光催化活性，提出了CoOxco-催化剂的有效负载方式和条件以及BaTi 4 O 9的有效制备方法。结果表明，在较佳的制备方法和条件下制备的光催化剂对水的整体分解具有较高的光催化活性，在313 nm处的表观量子产率（AQY）达到41%。
The improvement of photocatalytic activity of BaTi4O9to overall H2O splitting was investigated. From the evaluation of co‐catalysts, Rh0.7Cr1.3O3was preferable. However, this co‐catalyst was degrading with the progress of the photocatalytic reaction. When CoOxwas co‐loaded as the co‐catalyst for O2evolution reaction over the surface, the steady progress of the photocatalytic reaction can be confirmed. Here, effective way and condition for loading CoOxco‐catalyst as well as effective preparation method of BaTi4O9were demonstrated in order to improve the photocatalytic activity of BaTi4O9with Rh0.7Cr1.3O3and CoOxco‐catalysts to the overall H2O splitting. As the results, the photocatalyst prepared by preferable method and condition showed high photocatalytic activity to the overall H2O splitting, where the apparent quantum yield (AQY) at 313 nm reached to 41 %.