TY - JOUR

T1 - UV-LED TiO2 photocatalytic oxidation of acetone vapor

T2 - Effect of high frequency controlled periodic illumination

AU - Korovin, E.

AU - Selishchev, D.

AU - Besov, A.

AU - Kozlov, D.

PY - 2015/2

Y1 - 2015/2

N2 - We investigated the effect of controlled periodic illumination on quantum efficiency of acetone vapor photocatalytic oxidation. It was demonstrated that quantum efficiency increases with the increase of light pulses frequency and decrease of the duty cycle and at some point reaches its maximum value which is equal to the quantum efficiency obtained under the same average photon flux. Several kinetic models were applied to the experimental data. The general conclusion was made that there are only two kinetically distinguishable active species on TiO2 surface with the lifetimes in 10-3-101s range.

AB - We investigated the effect of controlled periodic illumination on quantum efficiency of acetone vapor photocatalytic oxidation. It was demonstrated that quantum efficiency increases with the increase of light pulses frequency and decrease of the duty cycle and at some point reaches its maximum value which is equal to the quantum efficiency obtained under the same average photon flux. Several kinetic models were applied to the experimental data. The general conclusion was made that there are only two kinetically distinguishable active species on TiO2 surface with the lifetimes in 10-3-101s range.

KW - Controlled periodic illumination

KW - Photocatalysis

KW - Reaction kinetics simulation

KW - Titanium dioxide

KW - UV LED

UR - http://www.scopus.com/inward/record.url?scp=84906283505&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2014.07.034

DO - 10.1016/j.apcatb.2014.07.034

M3 - Article

AN - SCOPUS:84906283505

VL - 163

SP - 143

EP - 149

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

ER -