Multiwalled carbon nanotubes/silver nanocomposite as effective SERS platform for detection of methylene blue dye in water

Title:	Multiwalled carbon nanotubes/silver nanocomposite as effective SERS platform for detection of methylene blue dye in water
Authors:	Ngo, Xuan Dinh Tran, Quang Huy Le, Van Vu Le, Thi Tam Anh-Tuan Le
Keywords:	Silver nanoparticles;MWCNTs-Ag composite;Carbon nanotubes;Surface-enhanced Raman scattering;Methylene blue
Issue Date:	2016
Publisher:	ĐHQGHN
Abstract:	In this work, a functional nanocomposite consisting of silver nanoparticles and multiwalled carbon nanotubes (MWCNTs-Ag) was successfully synthesized using a two-step chemical process. The MWCNTs-Ag nanocomposite has been studied as a surface-enhanced Raman scattering (SERS) sensing platform for detection of methylene blue (MB) dye in an aqueous medium. The obtained results reveal that the MWCNTs-Ag nanocomposite exhibits higher SERS detection activity than that of pure Ag-nanoparticles (Ag-NPs). The calculated enhancement factors are 1.51 x 10 6 for pure Ag-NPs and 4.68 x 10 6 for the MWCNTs-Ag nanocomposite. MB detection has been achieved as low as 1 ppm. The SERS enhancement of the MWCNTs-Ag nanocomposite can be attributed to the combination of both an electromagnetic (EM) effect and a chemical effect (CE). With exhibited properties, the MWCNTs-Ag nanocomposite can be effectively used for detection of various organic dyes in water solution
Description:	p. 84-89
URI:	http://repository.vnu.edu.vn/handle/VNU_123/58328
ISSN:	2468-2284
Appears in Collections:	Advanced Materials and Devices