期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 371, 期 -, 页码 125-134出版社
ELSEVIER
DOI: 10.1016/j.molcata.2013.01.033
关键词
Zinc phthalocyanine; Benzylthio; Fluorescence lifetime; Gold nanoparticles; Electrospinning
资金
- Department of Science and Technology (DST) through DST/NRF South African Research Chairs Initiative
- National Research Foundation (NRF) of South Africa through DST/NRF South African Research Chairs Initiative
- Rhodes University
The heterogeneous photocatalytic activity of Zn(II) phthalocyanine-gold nanoparticle conjugates immobilized on electrospun polystyrene fibers was investigated using 4-chlorophenol and Orange G as model pollutants. The phthalocyanine-gold nanoparticle conjugates were synthesized via a ligand exchange reaction and characterized using spectroscopic and microscopic techniques. The interaction between the gold nanoparticles and phthalocyanines did not restrict the formation of excited singlet states, triplet states and hence the formation of singlet oxygen required for photocatalysis. The conjugates showed significantly higher singlet oxygen quantum yields and enhanced photocatalytic activity compared to the phthalocyanines. It was concluded that hybrid electrospun fibers provide great potential as active photocatalysts for oxidizing organic pollutants using singlet oxygen as an oxidant. (C) 2013 Elsevier B.V. All rights reserved.
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