TY - JOUR
T1 - Photo-oxidation by singlet oxygen generated on nanoporous silicon in a LED-powered reactor
AU - Lapkin, Alexei
AU - Boddu, V M
AU - Aliev, G N
AU - Goller, B
AU - Polisski, S
AU - Kovalev, D
PY - 2008
Y1 - 2008
N2 - An annular flow photochemical reactor illuminated by UV and green (524 nm) light emitting diodes (LEDs) was characterised by a chemical actinometer. Very high efficiency of absorption of photons, most likely promoted by the specific orientation of LED elements in the reactor, was calculated based on the measured actinometry results. Generation of singlet oxygen mediated by nanoporous silicon under illumination by Ar+ laser, UV and green LEDs was demonstrated by indirect measurement of suppression of porous Si photoluminescence, and by direct measurements of singlet oxygen luminescence. The efficiency of reactor in singlet oxygen mediated reactions was tested using reaction of decomposition of diphenylbenzofuran. Estimated quantum yield of chemical reaction is about 34%.
AB - An annular flow photochemical reactor illuminated by UV and green (524 nm) light emitting diodes (LEDs) was characterised by a chemical actinometer. Very high efficiency of absorption of photons, most likely promoted by the specific orientation of LED elements in the reactor, was calculated based on the measured actinometry results. Generation of singlet oxygen mediated by nanoporous silicon under illumination by Ar+ laser, UV and green LEDs was demonstrated by indirect measurement of suppression of porous Si photoluminescence, and by direct measurements of singlet oxygen luminescence. The efficiency of reactor in singlet oxygen mediated reactions was tested using reaction of decomposition of diphenylbenzofuran. Estimated quantum yield of chemical reaction is about 34%.
UR - http://www.scopus.com/inward/record.url?scp=38649098742&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.cej.2007.04.013
U2 - 10.1016/j.cej.2007.04.013
DO - 10.1016/j.cej.2007.04.013
M3 - Article
SN - 1385-8947
VL - 136
SP - 331
EP - 336
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 2-3
ER -