RATE OF PHOTON-ABSORPTION AND TURNOVER NUMBER - 2 PARAMETERS FOR THE COMPARISON OF HETEROGENEOUS PHOTOCATALYTIC SYSTEMS IN A QUANTITATIVE WAY

Authors
AUGUGLIARO V SCHIAVELLO M PALMISANO L
Citation
V. Augugliaro et al., RATE OF PHOTON-ABSORPTION AND TURNOVER NUMBER - 2 PARAMETERS FOR THE COMPARISON OF HETEROGENEOUS PHOTOCATALYTIC SYSTEMS IN A QUANTITATIVE WAY, Coordination chemistry reviews, 125(1-2), 1993, pp. 173-181
Citations number
18
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Coordination chemistry reviews → ACNP
ISSN journal
00108545
Volume
125
Issue
1-2
Year of publication
1993
Pages
173 - 181
Database
ISI
SICI code
0010-8545(1993)125:1-2<173:ROPATN>2.0.ZU;2-O
Abstract
In order to correctly compare the performance of different photocataly tic systems using polycrystalline semiconductor oxides, two parameters are proposed: the rate of photon absorption (rpa) and the turnover nu mber (tn). From these quantities the quantum yield (qy), which indicat es the efficiency of the absorbed photons for promoting a reaction eve nt, can be determined. The phenol photodegradation reaction, carried o ut in aqueous dispersions of polycrystalline TiO2 (anatase) of differe nt preparation methods and sources, has been used as ''test reaction'' in order to determine the tn, rpa and qy values.