Photocatalytic Overall Water Splitting Promoted by an α–β phase Junction on Ga2O3

When Alpha met Beta: A tuneable α—β surface phase junction on Ga2O3 can significantly improve photocatalytic overall water splitting into H2 and O2 over individual α-Ga2O3 or β-Ga2O3 surface phases. This enhanced photocatalytic performance is mainly attributed to the efficient charge separation and transfer across the α–β phase junction. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.