Synthesis of Pb nanowires-Au nanoparticles nanostructure decorated with reduced graphene oxide for electrochemical sensing

Wenhao Dong; Yipeng Ren; Yanyan Zhang; Yuan Chen; Cong Zhang; Zhixue Bai; Rui Ma; Qiang Chen

doi:10.1016/j.talanta.2017.01.017

Synthesis of Pb nanowires-Au nanoparticles nanostructure decorated with reduced graphene oxide for electrochemical sensing

Talanta. 2017 Apr 1:165:604-611. doi: 10.1016/j.talanta.2017.01.017. Epub 2017 Jan 7.

Authors

Wenhao Dong¹, Yipeng Ren², Yanyan Zhang¹, Yuan Chen¹, Cong Zhang¹, Zhixue Bai¹, Rui Ma¹, Qiang Chen³

Affiliations

¹ a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
² Institution of Entomology, College of Life Science, Nankai University, Tianjin 300071, China.
³ a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China. Electronic address: qiangchen@nankai.edu.cn.

PMID: 28153305
DOI: 10.1016/j.talanta.2017.01.017

Abstract

Graphene sheets are a sp²-hybridized carbon material that offer extraordinary electrical conductivity and excellent thermal and mechanical properties. They are expected to find use in a wide variety of applications. In this study, a new novel electrocatalyst, a Pb nanowires-Au nanoparticles nanocomposite decorated with reduced graphene oxide (rGO-Pb NWs-Au NPs), was successfully synthesized by an effective and simple approach. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy were employed to observe the as-prepared nanomaterial. In addition, the electrochemical behaviors of a rGO-Pb NWs-Au NPs-modified glassy carbon (GC) electrode were evaluated by cyclic voltammetry and chronoamperometry. The final prepared sensor exhibited favorable electroreduction activity towards H₂O₂ with a remarkable sensitivity of 552.43µAmM^-1cm^-2, a wide linear range of 0.005-1.25mM, a detection limit of 0.6µM and a rapid response time (within 5s). Moreover, the sensor also exhibited good reproducibility, selectivity and stability. Therefore, the present work also provides a potential practicable approach to fabricate various of non-enzymatic amperometric sensors, such as sensors for the detection of glucose, urea, ascorbic acid and dopamine.

Keywords: Au nanoparticles; Hydrogen peroxide sensor; Pb nanowires; Reduced graphene oxide.

MeSH terms

Biosensing Techniques / methods
Electrochemical Techniques / methods*
Electrodes*
Gold / chemistry*
Graphite / chemistry*
Lead / chemistry*
Metal Nanoparticles / chemistry*
Nanocomposites / chemistry
Nanowires / chemistry*
Oxides / chemistry

Substances

Oxides
Lead
Gold
Graphite