Journal
JOURNAL OF CATALYSIS
Volume 233, Issue 2, Pages 405-410Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2005.05.011
Keywords
mesoporous; photocatalyst; acetaldehyde; AgBr/Al-MCM-41; visible-light irradiation; UV irradiation
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A-Br/Al-MCM-41 catalyst was active for the photooxidation of acetaldehyde in the gas phase under visible and UV light. Upon visible light illumination. continuous production of CO2 with a decrease in CH3CHO concentration was observed without the destruction of AgBr. The crystallite sizes of AgBr increased, as seen from powder X-ray diffraction after photocatalytic reaction Under both visible and UV irradiation. It appears that AgBr together with Ago is the photoactive species in the decomposition of CH3CHO, and the high-surface-area Al-MCM-41 helps in high dispersion of AgBr on the support. (c) 2005 Elsevier Inc. All rights reserved.
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