PHOTOMINERALISATION OF 4-CHLOROPHENOL SENSITIZED BY TITANIUM-DIOXIDE - A STUDY OF THE EFFECT OF ANNEALING THE PHOTOCATALYST AT DIFFERENT TEMPERATURES

Andrew Mills, S. Morris

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

The results of a study of the variation in photocatalytic activity of TiO2, as measured by its ability to photomineralise 4-chlorophenol, as a function of temperature used to anneal the TiO2, are reported. Heat treatment of the TiO2 leads to a marked decrease in its photocatalytic activity at annealing temperatures above 600-degrees-C. This decrease is associated with a concomitant drop in the specific surface area of the TiO2, owing to particle sintering, rather than the anatase to rutile transformation, which occurs largely at temperatures above 700-degrees-C. There is a reasonable correlation between photocatalytic activity and the surface area of the aggregate particles in the dispersions of the different heat-treated TiO2 samples.
Original languageEnglish
Pages (from-to)285-289
Number of pages5
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume71
Publication statusPublished - 1993

Fingerprint

Dive into the research topics of 'PHOTOMINERALISATION OF 4-CHLOROPHENOL SENSITIZED BY TITANIUM-DIOXIDE - A STUDY OF THE EFFECT OF ANNEALING THE PHOTOCATALYST AT DIFFERENT TEMPERATURES'. Together they form a unique fingerprint.

Cite this