Light-induced In-situ Ti3+Formation in TiO2Nanosheets for Photocatalytic Hydrogen Evolution

Wierzbicka E, Osuagwu B, Denisov N, Fehn D, Meyer K, Schmuki P (2020)

Publication Type: Conference contribution

Publication year: 2020

Journal

IOP Conference Series: Materials Science and Engineering IOP Publishing: Conference Series

Publisher: IOP Publishing Ltd

Book Volume: 908

Conference Proceedings Title: IOP Conference Series: Materials Science and Engineering

Event location: Paris FR

DOI: 10.1088/1757-899X/908/1/012001

Abstract

TiO2 has been the benchmark semiconductor for the production of photocatalytic H2 from aqueous media (with and without sacrificial agent). On TiO2 surfaces, the photocatalytic H2 evolution reaction in aqueous environments is kinetically severely hampered. To overcome this limitation and reach reasonable H2 generation rates, a well-elucidated approach is the use of noble metal co-catalysts. In contrast to costly noble metal approaches, it recently has been reported that titania reduction treatments can lead to a noble-metal-free photocatalytic H2 generation. So-called "grey"titania due to Ti3+ states shows intrinsically activated photocatalytic H2 evolution [1-3]. The present work demonstrates the feasibility to use in-situ photoinduced reduction to create Ti3+ states that act as intrinsic catalyst and activate hydrothermal synthetized anatase nanosheets for H2 generation to mediate the transfer of photo-induced charge carriers to the electrolyte.

Authors with CRIS profile

Ewa Wierzbicka Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Emeka Benedict Osuagwu Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Nikita Denisov Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Dominik Fehn Lehrstuhl für Anorganische und Allgemeine Chemie Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie Patrik Schmuki Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)

How to cite

APA:

Wierzbicka, E., Osuagwu, B., Denisov, N., Fehn, D., Meyer, K., & Schmuki, P. (2020). Light-induced In-situ Ti3+Formation in TiO2Nanosheets for Photocatalytic Hydrogen Evolution. In IOP Conference Series: Materials Science and Engineering. Paris, FR: IOP Publishing Ltd.

MLA:

Wierzbicka, Ewa, et al. "Light-induced In-situ Ti3+Formation in TiO2Nanosheets for Photocatalytic Hydrogen Evolution." Proceedings of the 2020 5th International Conference on Energy Materials and Applications, ICEMA 2020, Paris IOP Publishing Ltd, 2020.

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