Umeda H, Mezaki Y, Oshio A, Kaneko Y, Okamoto R, Kusumoto S, Kunimura S. Gold Nanoparticles Produced by Low-temperature Heating of the Dry Residue of a Droplet of an HCl Acidic Solution of HAuCl
4·4H
2O in a Low Vacuum.
ANAL SCI 2021;
37:1427-1432. [PMID:
33840681 DOI:
10.2116/analsci.20p458]
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Abstract
An easy method is presented for producing gold nanoparticles. We show that by performing simultaneous low-temperature heating of a quartz glass substrate on which the dry residue of a 10 μL droplet of an HCl acidic solution of HAuCl4·4H2O is deposited and a counter substrate using Peltier devices in a low vacuum produced by a rotary pump, gold nanoparticles with sizes ranging from about twenty to one hundred and several tens of nanometers are produced on the counter substrate. In this study, an application of a gold nanoparticle substrate produced by this method to the sample holder for surface-enhanced Raman scattering analysis is also shown.
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