Formation of Silver Nanoprisms and Their Optical Properties

Abstract

Abstract: Silver nanoprisms have been prepared by a soft solution approach under microwave irradiation from the solution of silver nitrate(AgNO₃) in the presence of poly(N-vinyl-2-pyrrolidone) without any other reducing agent.The reaction process was followed by X-ray powder diffraction, TEMand UV-Vis spectroscopy.The results showed that silver nanoprisms were formed from the spherical nanoparticles.Most of them were triangular(edge length 50-100 nm) or truncated triangular nanoprisms and two distinct quadrupole plasmon resonances in UV-Vis spectra were observed.With reaction progress, the colloid solution with a interesting color was obtained.The influences of the PVP/AgNO₃mass ratio, solid content and inorganic precursor on the optical properties and morphology of silver nanoparticles were investigated.

Key words: Silver colloid, Nanoprism, Absorption spectrum

CLC Number:

O611.4

TrendMD:

HE Rong, QIAN Xue-Feng, YIN Jie, ZHU Zi-Kang, WANG Hai-Lin . Formation of Silver Nanoprisms and Their Optical Properties[J]. Chem. J. Chinese Universities, 2003, 24(8): 1341.

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Formation of Silver Nanoprisms and Their Optical Properties

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