Beilstein J. Nanotechnol.2014,5, 1071–1072, doi:10.3762/bjnano.5.119
degradation. In recent years, the interest in photocatalytic organic conversion has risen, which is reflected by a report on photo-epoxidation. And last but not least, one of the studies of this Thematic Series aims for a fundamental understanding of the photophysical process by optical modeling.
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Beilstein J. Nanotechnol.2014,5, 566–576, doi:10.3762/bjnano.5.67
, National Chiao Tung University, Hsin Chu 300, Taiwan 10.3762/bjnano.5.67 Abstract The light irradiation parameters, including the wavelength spectrum and intensity of light source, can significantly influence a photocatalytic reaction. This study examines the propylene photo-epoxidation over V-Ti/MCM-41
photocatalyst by using artificial sunlight (Xe lamp with/without an Air Mass 1.5 Global Filter at 1.6/18.5 mW·cm−2) and ultraviolet light (Mercury Arc lamp with different filters in the range of 0.1–0.8 mW·cm−2). This is the first report of using artificial sunlight to drive the photo-epoxidation of propylene
both PO formation and C3H6 consumption in log–log scale. The light utilization with a mercury arc lamp is better than with a xenon lamp. The selectivity to PO remains practically unchanged with respect to NLU, suggesting that the photo-epoxidation occurs through the same mechanism under the conditions
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Figure 1:
The spectrum of: (a) UV–vis absorption of V-Ti/MCM-41, and emission of (b) 200 W mercury arc lamp, ...