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

Paper ID Volume ID Publish Year Pages File Format Full-Text
26583 43965 2015 40 PDF Available
Title
Powder semiconductor photocatalysis in aqueous solution: An overview of kinetics-based reaction mechanisms
Abstract

•Ten mechanisms considered, including basic proofs and corrections.•Many published datasets used to test the models.•Validity of usual assumptions considered.•Best mechanism at present identified.

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.

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Keywords
Titania; Photocatalysis; Slurries; Dispersions; Mechanisms; Kinetics; Models
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 310, 1 September 2015, Pages 66–105
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us