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TiO 2 Nanotubes: Nitrogen‐Ion Implantation at Low Dose Provides Noble‐Metal‐Free Photocatalytic H 2 ‐Evolution Activity
Author(s) -
Zhou Xuemei,
Häublein Volker,
Liu Ning,
Nguyen Nhat Truong,
Zolnhofer Eva M.,
Tsuchiya Hiroaki,
Killian Manuela S.,
Meyer Karsten,
Frey Lothar,
Schmuki Patrik
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201511580
Subject(s) - noble metal , photocatalysis , materials science , catalysis , nitrogen , ion implantation , metal , ion , chemical engineering , nanotechnology , inorganic chemistry , chemistry , metallurgy , organic chemistry , engineering
Low‐dose nitrogen implantation induces an ion and damage profile in TiO 2 nanotubes that leads to “co‐catalytic” activity for photocatalytic H 2 ‐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 H 2 generation.