Premium
Long‐Lasting Non‐hydrogenated Dark Titanium Dioxide: Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts
Author(s) -
Ozer Lütfiye Y.,
Apostoleris Harry,
Ravaux Florent,
Shylin Sergii I.,
Mamedov Fikret,
Lindblad Andreas,
Johansson Fredrik O. L.,
Chiesa Matteo,
Sá Jacinto,
Palmisano Giovanni
Publication year - 2018
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201800097
Subject(s) - rutile , brookite , materials science , titanium dioxide , photocatalysis , visible spectrum , photochemistry , oxide , chemical engineering , graphene , absorption (acoustics) , surface modification , oxygen , doping , nanotechnology , anatase , optoelectronics , catalysis , chemistry , composite material , metallurgy , organic chemistry , engineering
Multiphase TiO 2 was stably modified by vacuum treatment for a dramatic improvement in visible‐light absorption and photocatalytic reactivity. The samples were made of rutile‐brookite, bare or N doped, and were grown on reduced graphene oxide. The stable introduction of Ti 3+ species and oxygen vacancies resulting in mitigated electron–hole recombination was identified as the main responsible factor, along with a change in surface charges.