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Enhanced Oxidation of Air Contaminants on an Ultra-Low Density UV-Accessible Aerogel Photocatalyst

Published online by Cambridge University Press:  10 February 2011

M. Dreyer ,
G. K. Newman ,
L. Lobban ,
S. J. Kersey ,
R. Wang  and
J. H. Harwell
M. Dreyer
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019, mdreyer@ou.edu
G. K. Newman
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019, jnewman@ou.edu
L. Lobban
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019, llobban@ou.edu
S. J. Kersey
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019
R. Wang
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019
J. H. Harwell
Affiliation:
School of Chemical Engineering and Materials Science, University of Oklahoma, OK 73019
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Abstract

This research developed new forms of photocatalysts that could potentially move photocatalytic degradation of air contaminants into the main stream of industrially used remediation technologies. Tests of the photocatalytic activity of the TiO2 aerogel catalysts have been carried out using both acetone and methane as the air contaminant. For comparison, the same tests were carried out on a standard (non-aerogel) anatase powder. Despite having very low crystallinity, the aerogel decontaminates the air far more effectively than an equal volume of the anatase powder which indicates that a much larger fraction of the aerogel is activated by the UV light. Experimental data were used to determine adsorption equilibrium constants for acetone, and to determine reaction rate constants assuming a Langmuir-Hinshelwood type rate expression.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 141
Copyright
Copyright © Materials Research Society 1997

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References

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