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arXiv · 1610.06564

Hydrogenated anatase: Strong photocatalytic H2 evolution without the use of a co-catalyst

Ning Liu·Christopher Schneider·Detlef Freitag·Umamaheswari Venkatesan·V. R. Reddy Marthala·Martin Hartmann·Benjamin Winter·Erdmann Spiecker·Eva Zolnhofer·Karsten Meyer·Patrik Schmuki
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Abstract

In the present work we show, how a high pressure hydrogenation of commercial anatase or anatase/rutile powder can create a photocatalyst for hydrogen evolution that is highly effective and stable without the need of any additional co-catalyst. This activation effect can not be observed for rutile. For anatase/rutile mixtures, however, a strong synergistic effect is found (similar to findings commonly observed for noble metal decorated TiO2). ESR measurements indicate the intrinsic co-catalytic activation of anatase TiO2 to be due to specific defect centers formed during hydrogenation.

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Ning Liu, Christopher Schneider, Detlef Freitag, Umamaheswari Venkatesan, V. R. Reddy Marthala, Martin Hartmann, Benjamin Winter, Erdmann Spiecker, Eva Zolnhofer, Karsten Meyer, Patrik Schmuki. 2016-10-20. Hydrogenated anatase: Strong photocatalytic H2 evolution without the use of a co-catalyst. https://doi.org/10.1002/anie.201408493

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