Predicting the Size of Silver Nanoparticles from Their Optical Properties

被引：113

作者：

Amirjani, Amirmostafa ^{[1
]}

Firouzi, Farzad ^{[1
]}

Haghshenas, Davoud Fatmehsari ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Mat & Met Engn, Tehran, Iran

来源：

PLASMONICS | 2020年 / 15卷 / 04期

关键词：

Localized surface plasmon resonance (LSPR); Mie theory; Size measurement; Refractive index; Silver nanoparticles; SURFACE-PLASMON RESONANCE; MIE THEORY; AG; NANOSTRUCTURES; SCATTERING; SHAPE; NANOCRYSTALS; CONSTANTS; AU; CU;

D O I：

10.1007/s11468-020-01121-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, localized surface plasmon resonance (LSPR) of the spherical silver nanoparticles (AgNPs) was evaluated based on experimental and theoretical viewpoints. In the experimental phase, a facile seed-mediated method was employed to synthesize spherical AgNPs with different sizes. As expected, an increase in the size of AgNPs resulted in a red-shift in LSPR peak position from 390 to 460 nm. Besides, the theoretical LSPR peak position of AgNPs was derived from Mie theory using different refractive indices databases. A comparison between the experimentally obtained data and the theoretical predictions indicated that "Palik" database can lead to a more reliable data regarding the size of AgNPs. Finally, a relation was established for the prediction and estimation of AgNPs' size through a simple measurement of LSPR position with a UV-Vis spectrometer.

引用

页码：1077 / 1082

页数：6

共 33 条

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Amirjani, Amirmostafa ;

Koochak, Niloofar Namazi ;