Activation of Water-Splitting Photocatalysts by Loading with Ultrafine Rh-Cr Mixed-Oxide Cocatalyst Nanoparticles

Overview

Journal Angew Chem Int Ed Engl

Specialty Chemistry

Date 2020 Feb 12

PMID 32043742

Citations 9

Authors

Wataru Kurashige

Yutaro Mori

Shuhei Ozaki

Masanobu Kawachi

Sakiat Hossain

Tokuhisa Kawawaki

Cameron J Shearer

Akihide Iwase

Gregory F Metha

Seiji Yamazoe

Akihiko Kudo

Yuichi Negishi

Affiliations

Soon will be listed here.

Abstract

The activity of many water-splitting photocatalysts could be improved by the use of Rh -Cr mixed oxide (Rh Cr O ) particles as cocatalysts. Although further improvement of water-splitting activity could be achieved if the size of the Rh Cr O particles was decreased further, it is difficult to load ultrafine (<2 nm) Rh Cr O particles onto a photocatalyst by using conventional loading methods. In this study, a new loading method was successfully established and was used to load Rh Cr O particles with a size of approximately 1.3 nm and a narrow size distribution onto a BaLa Ti O photocatalyst. The obtained photocatalyst exhibited an apparent quantum yield of 16 %, which is the highest achieved for BaLa Ti O to date. Thus, the developed loading technique of Rh Cr O particles is extremely effective at improving the activity of the water-splitting photocatalyst BaLa Ti O . This method is expected to be extended to other advanced water-splitting photocatalysts to achieve higher quantum yields.

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