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One-step synthesis of Ag–reduced graphene oxide nanocomposites and their surface-enhanced Raman scattering activity

Published online by Cambridge University Press:  07 October 2014

S. Lin
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
X. S. Zhao
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Y. F. Li
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
C. Liang*
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
K. Huang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Y. Sheng
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
H. Wang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
C. X. Ye
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
X. Xu
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Y. F. Zhou
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
D. Y. Fan
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Y. F. Shang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
H. J. Yang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
R. Zhang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Y. G. Wang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
M. Lei
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
*
a) Author to whom correspondence should be addressed. Electronic mail: [email protected]

Abstract

Ag–reduced graphene oxide (Ag/rGO) nanoparticle composites were synthesized through a facile one-step hydrothermal reaction using GO and silver carbonate (Ag2CO3) as raw materials. The homogeneous silver nanospheres with an average size of 50 nm well dispersed on the surface of rGO were obtained without other additives. During the formation process, GO both promotes the dispersion of Ag2CO3 in aqueous solution and acts as the substrate of silver cations, and the hydrolysis of Ag2CO3 provides silver cations and alkaline condition. Moreover, GO further serves as reducing agent to generate elemental silver in the alkaline condition. The as-prepared materials exhibit excellent surface-enhanced Raman scattering activities when used to detect the Raman signals of R6G absorbed on the Ag/rGO substrate.

Type
Technical Articles
Copyright
Copyright © International Centre for Diffraction Data 2014 

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