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TiO2 Nanotubes: Nitrogen‐Ion Implantation at Low Dose Provides Noble‐Metal‐Free Photocatalytic H2‐Evolution Activity |
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| Authors: | Xuemei Zhou Dr. Volker Häublein Dr. Ning Liu Nhat Truong Nguyen Eva M. Zolnhofer Dr. Hiroaki Tsuchiya Dr. Manuela S. Killian Prof. Dr. Karsten Meyer Prof. Dr. Lothar Frey Prof. Dr. Patrik Schmuki |
| Affiliation: | 1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Erlangen, Germany;2. Fraunhofer Institute for Integrated Systems and Device Technology IISB, Erlangen, Germany;3. Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany;4. Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan |
| Abstract: | Low‐dose nitrogen implantation induces an ion and damage profile in TiO2 nanotubes that leads to “co‐catalytic” activity for photocatalytic H2‐evolution (without the use of any noble metal). Ion implantation with adequate parameters creates this active zone limited to the top part of the tubes. The coupling of this top layer and the underlying non‐implanted part of the nanotubes additionally contributes to an efficient carrier separation and thus to a significantly enhanced H2 generation. |
| Keywords: | H2 evolution ion implantation nitrogen photocatalysis TiO2 nanotubes |