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Sol-gel preparation of AuCu and Au4Cu nanocluster alloys in silica thin films

Title
Sol-gel preparation of AuCu and Au4Cu nanocluster alloys in silica thin films
Authors
Gwak J.-H.Kim S.-J.Lee M.
Ewha Authors
김성진이민영
SCOPUS Author ID
김성진scopus; 이민영scopus
Issue Date
1998
Journal Title
Journal of Physical Chemistry B
ISSN
1089-5647JCR Link
Citation
vol. 102, no. 40, pp. 7699 - 7704
Indexed
SCOPUS WOS scopus
Abstract
Using sol-gel processing and high-temperature annealing, metal alloy nanoclusters of AuCu and Au4Cu in SiO2 thin films were synthesized. The crystallographic data show that the lattice parameters of those nanocluster alloys, both showing the fcc structure, are very close to the bulk values. The nanocrystals obtained by annealing at 900°C were nearly spherical in shape, having the AuCu size of ca. 23 nm in radius and the Au4Cu size of ca. 35 nm. The peaks of the optical spectra of the samples annealed at 700-900°C are located at 555 nm for AuCu and at 562 nm for Au4Cu.
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자연과학대학 > 화학·나노과학전공 > Journal papers
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