TY - JOUR
T1 - Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films
AU - Vuorema, Anne
AU - Walsh, James J
AU - Sillanpaa, Mika
AU - Thielemans, Wim
AU - Forster, Robert J
AU - Marken, Frank
PY - 2012/7/1
Y1 - 2012/7/1
N2 - Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.
AB - Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.
UR - http://www.scopus.com/inward/record.url?scp=84861345646&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.electacta.2011.10.025
U2 - 10.1016/j.electacta.2011.10.025
DO - 10.1016/j.electacta.2011.10.025
M3 - Article
SN - 0013-4686
VL - 73
SP - 31
EP - 35
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -