Powder semiconductor photocatalysis in aqueous solution: An overview of kinetics-based reaction mechanisms

Research output: Contribution to journalLiterature review

62 Citations (Scopus)

Abstract

A brief, historical overview of 10 apparently different, although in some cases, upon inspection, closely related, popular proposed reaction mechanisms and their associated rate equations, is given and in which the rate expression for each mechanism is derived from basic principles, Appendix A. In Appendix B, each of the 5 main mechanisms are tested using datasets, comprising initial reaction rate vs. organic pollutant concentration, [P] and incident irradiance, ρ, data, reported previously for TiO2, where P is phenol, 4-chlorophenol and formic acid. The best of those tested, in terms of overall fit, simplicity, usefulness and versatility is the disrupted adsorption kinetic model proposed by Ollis. The usual basic assumptions made in constructing these mechanisms are reported and the main underlying concerns explored.
Original languageEnglish
Pages (from-to)66-105, Impact Factor: 2.5
Number of pages40
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume310
Early online date21 Apr 2015
DOIs
Publication statusPublished - 2015

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