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Dynamic control of gold nanoparticle morphology in a microchannel flow reactor by glucose reduction in aqueous sodium hydroxide solution

Author:
Ishizaka, Takayuki, Ishigaki, Atsushi, Kawanami, Hajime, Suzuki, Akira, Suzuki, Toshishige M.
Source:
Journal of colloid and interface science 2012 v.367 no.1 pp. 135-138
ISSN:
0021-9797
Subject:
glucose, nanogold, nanoparticles, optical properties, particle size, sodium hydroxide
Abstract:
Continuous flow synthesis of gold nanoparticles was demonstrated using a microchannel reactor with glucose reduction in aqueous alkaline medium. Particle size, morphology, and visual/optical properties of the dispersion liquid were controlled dynamically by tuning of the rate of NaOH addition. Characteristic star-like nanoparticles formed spontaneously as a quasi-stable state, but they changed the morphology to round shape and showed spectral change over time.
Agid:
1007885