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Parting water! Direct splitting of pure water into H2 and O2 under visible light (λ>400 nm) was achieved by using a modified TaON photocatalyst with d0 electronic configuration. Modification of a less-defective TaON (ZrO2/TaON) with core/shell-structured RuOx/Cr2O3 nanoparticles and colloidal IrO2 was found to be indispensable to achieving the reaction (see figure). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to 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.
Maeda et al. (Thu,) studied this question.