Analytical control of Rhodamine B by SERS using reduced graphene decorated with copper selenide

被引：28

作者：

Moreno, Virginia ^{[1
,2
]}

Murtada, Khaled ^{[1
,2
]}

Zougagh, Mohammed ^{[2
,3
]}

Rios, Angel ^{[1
,2
]}

机构：

[1] Univ Castilla La Mancha, Fac Sci & Chem Technol, Dept Analyt Chem & Food Technol, Ciudad Real 13071, Spain

[2] Reg Inst Appl Sci Res IRICA, Ciudad Real 13071, Spain

[3] Univ Castilla La Mancha, Dept Analyt Chem & Food Technol, Fac Pharm, Albacete, Spain

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 223卷

关键词：

Reduced graphene oxide; Copper selenide; Supercritical carbon dioxide; SERS; Rhodamine B; Chili powder; WALLED CARBON NANOTUBES; SUPERCRITICAL FLUIDS; CHILI-POWDER; RAMAN; NANOPARTICLES; COMPOSITES; EXTRACTION; ROUTE;

D O I：

10.1016/j.saa.2019.117302

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A novel approach for the decoration of reduced graphene oxide with copper selenide (CuSe-rGO), using supercritical carbon dioxide (sc-CO2) as a medium, was developed and proposed as a new substrate for surface-enhanced Raman spectroscopy (SERS) to determine Rhodamine B in chili powder. The synthesized materials graphene oxide (GO), reduced graphene oxide ( rGO) and CuSe-rGO were characterized by Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). All SERS spectra were obtained by using a portable Raman spectrometer. The procedure presented involves a simple and rapid sample pretreatment in order to determine Rhodamine B in chili powder, with a limit of quantification of 44.5 ng g(-1). The recovery values of the proposed method resulted in the 96% to 99% range, with RSD values from 2.4% to 3.0%. The developed SERS active hybrid substrate has an enhancement factor higher than those using gold or silver nanoparticles, providing a clear improvement in the sensitivity. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：7

共 35 条

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