Gamma radiation induced modifications in Au-polypyrrole nanocomposites: Detailed Raman and X-ray studies

被引：30

作者：

Ali, Yasir ^{[1
]}

Kumar, Vijay ^{[1
,3
]}

Sonkawade, R. G. ^{[2
]}

Dhaliwal, A. S. ^{[1
]}

Swart, H. C. ^{[3
]}

机构：

[1] St Longowal Inst Engn & Technol, Dept Phys, Longowal 148106, Punjab, India

[2] BBA Univ, Sch Phys Sci, Lucknow 226025, Uttar Pradesh, India

[3] Univ Free State, Fac Nat & Agr Sci, Dept Phys, ZA-9300 Bloemfontein, South Africa

来源：

VACUUM | 2014年 / 99卷

基金：

新加坡国家研究基金会;

关键词：

Electrochemical synthesis; Cyclic voltammetery; Composite; Gamma radiation; GOLD NANOPARTICLES; IRRADIATION; POLYMER; FILMS; REDUCTION; SILICA;

D O I：

10.1016/j.vacuum.2013.06.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A facile electrochemical synthesis of Au-polypyrrole (Au-PPy) composite films has been reported. The synthesized composite films were irradiated with a 1.25 MeV Co-60 gamma radiation with doses ranging from 500 to 1500 kGy and the corresponding changes in structural properties of the composites were studied. The structural investigation of Au-PPy composite films were performed by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and micro-Raman spectroscopic techniques. XRD studies showed the variation in peak intensities after gamma irradiation. Different parameters like crystallite size, micro strain, dislocation density and distortion parameters were calculated from XRD spectra. Observed results indicate the formation of an ordered system in the irradiated composite films. SEM micrograph showed significant interactions between the Au-particles and PPy film after gamma irradiation. Raman spectra show an overall increase in peak intensity after gamma irradiation. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：265 / 271

页数：7

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