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

doi:10.1002/anie.201408493

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

Chemical Physics 2016-10-24 v1

Authors: 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.

Keywords

hydrogenated anatase photocatalytic hydrogen evolution co-catalyst free anatase/rutile mixture synergistic effect defect centers ESR measurements

Cite

@article{arxiv.1610.06564,
  title  = {Hydrogenated anatase: Strong photocatalytic H2 evolution without the use of a co-catalyst},
  author = {Ning Liu and Christopher Schneider and Detlef Freitag and Umamaheswari Venkatesan and V. R. Reddy Marthala and Martin Hartmann and Benjamin Winter and Erdmann Spiecker and Eva Zolnhofer and Karsten Meyer and Patrik Schmuki},
  journal= {arXiv preprint arXiv:1610.06564},
  year   = {2016}
}

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

Abstract

Keywords

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