SERS-active composite based on rGO and Au/Ag core-shell nanorods for analytical applications

被引：28

作者：

Yu, Jiawen ^{[1
,2
]}

Ma, Yanan ^{[1
,2
]}

Yang, Congxing ^{[1
,2
]}

Zhang, Hang ^{[1
,2
]}

Liu, Lijun ^{[3
]}

Su, Jun ^{[1
,2
]}

Gao, Yihua ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Ctr Nanoscale Characterizat & Devices, Luoyu Rd 1037, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Luoyu Rd 1037, Wuhan 430074, Peoples R China

[3] Cent S Univ, Sch Life Sci, Ctr Biol Expt, Changsha 410017, Hunan, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 254卷

基金：

中国国家自然科学基金;

关键词：

rGO-Au@AgNRs; Au@Ag nanorods; Reduced graphene oxide; SERS; Pesticide detection; ENHANCED RAMAN-SCATTERING; GRAPHENE OXIDE; GOLD NANORODS; RHODAMINE; 6G; SURFACE; NANOSTRUCTURES; NANOPARTICLES; FABRICATION; SUBSTRATE; PLATFORM;

D O I：

10.1016/j.snb.2017.07.034

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This work demonstrated a new method to synthesize the functional hybrid material composed of reduced graphene oxide and Au/Ag core-shell nanorods (rGO-Au@AgNRs). The hybrid material can detect rhodamine-6G (R6G) with an enhancement factor (EF) up to (5.0 +/- 0.2) x 10(8), 4 fold higher than that of the rGO-AuNRs. Comparing with SERS-active substrate Au@Ag (without rGO), the Raman intensity of R6G on the rGO-Au@AgNRs has significant enhancement, especially at the Raman peak of 611 cm(-1), around 17 times. We also use rGO-Au@AgNRs to monitor the pesticide thiram at a low level similar to 10(-7) M and RSD 7.5% at the 561 cm(-1). The limit of detection (LOD) of thiram using rGO-Au@AgNRs was low to 5.12 x 10(-3) M, which suggested that the rGO-Au@AgNRs has potential applications in the detection of environment pollutants etc. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：182 / 188

页数：7

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