Premium
Establishing High Photocatalytic H 2 Evolution from Multiwalled Titanate Nanotubes
Author(s) -
Yoo Jeong Eun,
Alshehri Abdulmohsen Ali,
Qin Shanshan,
Bawaked Salem Mohamed,
Mostafa Mohamed Mokhtar M.,
Katabathini Narasimharao,
Fehn Dominik,
Schmidt Jochen,
Mazare Anca,
Denisov Nikita,
Cha Gihoon,
Meyer Karsten,
Schmuki Patrik
Publication year - 2020
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.202000281
Subject(s) - photocatalysis , anatase , materials science , titanate , noble metal , hydrothermal circulation , catalysis , chemical engineering , nanotechnology , hydrothermal synthesis , nanotube , doping , nanoscopic scale , water splitting , metal , chemistry , carbon nanotube , composite material , organic chemistry , metallurgy , optoelectronics , engineering , ceramic
Black TiO 2 in various forms has been investigated for numerous photochemical applications. In photocatalytic water splitting, “grey” titania forms have been reported to reach considerable H 2 generation rates without using a noble metal co‐catalyst. Up to now, a variety of anatase powders or other morphologies has been investigated in grey and black forms. Here we describe that hydrothermal titanate/anatase nanotubes can show a strong noble metal free photocatalytic activity. For optimized “blackening” conditions, a drastically higher photocatalytic H 2 production can be obtained than for other nanoscale morphologies. This effect can further be improved with a very mild Pt doping that again shows a clearly stronger photocatalytic H 2 production than comparably loaded nanopowders.