ACTIVATION-ENERGIES IN SEMICONDUCTOR PHOTOCATALYSIS FOR WATER-PURIFICATION - THE 4-CHLOROPHENOL TIO2 O-2 PHOTOSYSTEM

Andrew Mills, R. Davies

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The variation in the activation energy for the initial stage of photomineralization of 4-chlorophenol (4-CP), sensitized by Degussa P25 TiO2 was investigated as a function of P-O2 and [4-CP]. A model was developed based on the incorporation of Arrhenius-type functions in a general rate equation for the initial stage of photomineralization. Values of the essential constants in the model were derived from a few simple experiments. Positive, negative and zero apparent activation energies were predicted using the model, and verified experimentally, under moderate reaction conditions. The general applicability of the model is briefly discussed.
Original languageEnglish
Pages (from-to)173-178
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume85
Publication statusPublished - 1995

Fingerprint

Dive into the research topics of 'ACTIVATION-ENERGIES IN SEMICONDUCTOR PHOTOCATALYSIS FOR WATER-PURIFICATION - THE 4-CHLOROPHENOL TIO2 O-2 PHOTOSYSTEM'. Together they form a unique fingerprint.

Cite this