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Catalytic activity of metal-based nanoparticles for photocatalytic water oxidation and reduction

Title
Catalytic activity of metal-based nanoparticles for photocatalytic water oxidation and reduction
Authors
Fukuzumi S.Yamada Y.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2012
Journal Title
Journal of Materials Chemistry
ISSN
0959-9428JCR Link
Citation
vol. 22, no. 46, pp. 24284 - 24296
Indexed
SCOPUS WOS scopus
Abstract
Precious-metal catalysts, predominantly platinum (Pt), have been used to minimize the overpotentials for both the oxidation and reduction of water. This article focuses on the catalytic activity of non-Pt metal nanoparticles for the photocatalytic oxidation and reduction of water. Efficient photocatalytic hydrogen evolution was made possible by using ruthenium nanoparticles (RuNPs) instead of platinum nanoparticles (PtNPs) under basic conditions (pH 10) with 2-phenyl-4-(1-naphthyl)quinolinium ion (QuPh+-NA) as an organic photocatalyst and dihydronicotinamide adenine dinucleotide (NADH) as an electron source. Nickel nanoparticles (NiNPs) can also be used as a non-precious metal catalyst in the photocatalytic hydrogen evolution with QuPh+-NA and NADH maintaining 40% of the catalytic activity of PtNPs. On the other hand, some metal-based nanoparticles can also act as catalysts for photocatalytic water oxidation. Iridium hydroxide nanoparticles (Ir(OH)xNPs) formed during the thermal oxidation of water by (NH4)2[Ce IV(NO3)6] as an oxidant and cobalt hydroxide nanoparticles (Co(OH)xNPs) were produced during the photocatalytic oxidation of water with Ru(bpy)3 2+ as a photocatalyst and persulphate as a sacrificial oxidant using Ir and Co complexes with organic ligands as precatalysts. The catalytic activity and stability of Ir(OH) xNPs and Co(OH)xNPs were improved significantly as compared with Ir and Co precatalysts. © The Royal Society of Chemistry 2012.
DOI
10.1039/c2jm32926c
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자연과학대학 > 화학·나노과학전공 > Journal papers
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