Sensitive determination of capsaicin on Ag/Ag2O nanoparticles/reduced graphene oxide modified screen-printed electrode

被引：43
作者：
Wang, Yan [1 ]
Huang, Binbin [1 ]
Dai, Wanlin [1 ]
Ye, Jianshan [1 ]
Xu, Bin [2 ]
机构：
[1] South China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] Hainan Inst Food Control, 9 Yaogu Yi Rd, Haikou 570311, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2016年 / 776卷
基金：
中国国家自然科学基金;
关键词：
Capsaicin determination; Ag/Ag2O/reduced graphene oxide; Screen-printed electrode; Differential pulse stripping voltammetry; STRIPPING VOLTAMMETRIC DETERMINATION; PERFORMANCE LIQUID-CHROMATOGRAPHY; GLASSY-CARBON ELECTRODE; AG NANOPARTICLES; SILVER NANOPARTICLES; HYDROGEN-PEROXIDE; PEPPERS; DIHYDROCAPSAICIN; NANOCOMPOSITE; SENSOR;
D O I：
10.1016/j.jelechem.2016.06.031
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Ag/Ag2O-loaded poly(sodium4-styrenesulfonate) (PSS) functionalized reduced graphene oxide (rGO) composite (Ag/Ag2O-PSS-rgO) with high catalytic activity was synthesized for sensitive determination of capsaicin. The prepared composite was characterized by Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS). The obtained images revealed the good distribution of Ag/Ag2O on the PSS-rGO and confirmed the successful synthesis of the nanocomposite. Adsorptive stripping voltammetry (AdsSV) and differential pulse stripping voltammetry (DPSV) were used to study the electrochemical performance of the prepared sensor, and showed excellent electro-catalytic activity to the redox reaction of capsaicin due to the synergistic effect between Ag/Ag2O and PSS-rGO. Under the optimized conditions, the linear range of capsaicin was found to be 1.0-60 mu M with a detection limit of 0.40 mu M (S/N = 3). (C) 2016 Elsevier B.V. All rights reserved.
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收藏
页码：93 / 100
页数：8
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