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Achievement of High Photocatalytic Performance to BaTi 4 O 9 Toward Overall H 2 O Splitting
Author(s) -
Hiramachi Yuichi,
Fujimori Hirotaka,
Yamakata Akira,
Sakata Yoshihisa
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901564
Subject(s) - photocatalysis , catalysis , quantum yield , yield (engineering) , materials science , water splitting , chemistry , inorganic chemistry , physics , metallurgy , optics , organic chemistry , fluorescence
The improvement of photocatalytic activity of BaTi 4 O 9 to overall H 2 O splitting was investigated. From the evaluation of co‐catalysts, Rh 0.7 Cr 1.3 O 3 was preferable. However, this co‐catalyst was degrading with the progress of the photocatalytic reaction. When CoO x was co‐loaded as the co‐catalyst for O 2 evolution reaction over the surface, the steady progress of the photocatalytic reaction can be confirmed. Here, effective way and condition for loading CoO x co‐catalyst as well as effective preparation method of BaTi 4 O 9 were demonstrated in order to improve the photocatalytic activity of BaTi 4 O 9 with Rh 0.7 Cr 1.3 O 3 and CoO x co‐catalysts to the overall H 2 O splitting. As the results, the photocatalyst prepared by preferable method and condition showed high photocatalytic activity to the overall H 2 O splitting, where the apparent quantum yield (AQY) at 313 nm reached to 41 %.