UV-LED TiO2 Photocatalytic Oxidation of Acetone Vapor: Effect of High Frequency Controlled Periodic Illumination
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Applied Catalysis B: Environmental
ISSN: 0926-3373
, E-ISSN: 1873-3883
|
| Output data |
Year: 2015,
Volume: 163,
Pages: 143-149
Pages count
: 7
DOI:
10.1016/j.apcatb.2014.07.034
|
| Tags |
Controlled periodic illumination, Photocatalysis, Reaction kinetics simulation, Titanium dioxide, UV LED |
| Authors |
Korovin E.
1,2,3
,
Selishchev D.
1,2
,
Besov A.
1,2
,
Kozlov D.
1,2,3
|
| Affiliations |
| 1 |
Novosibirsk State University, Novosibirsk, 630090, Russia
|
| 2 |
Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
|
| 3 |
Research and Educational Centre for Energoefficient Catalysis (Novosibirsk State University), Novosibirsk, 630090, Russia
|
|
Funding (3)
|
1
|
Federal Agency for Scientific Organizations
|
V.44.2.11.
|
|
2
|
Council for Grants of the President of the Russian Federation
|
НШ-1183.2014.3
|
|
3
|
Novosibirsk State University
|
|
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 10−3–101 s range.