Synthesis of Pb nanowires-Au nanoparticles nanostructure decorated with reduced graphene oxide for electrochemical sensing.
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 H2O2with 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.
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Wenhao
W
Dong
Institution of Entomology, College of Life Science, Nankai University, Tianjin 300071, China.
Yipeng
Y
Ren
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Yanyan
Y
Zhang
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Yuan
Y
Chen
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Cong
C
Zhang
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Zhixue
Z
Bai
a The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Weijin Road No. 94, Tianjin 300071, China.
Rui
R
Ma
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.
Qiang
Q
Chen
D015374:Biosensing Techniques / Q000379:methods; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry
D010087:Oxides; D007854:Lead; D006046:Gold; D006108:Graphite
Au nanoparticles; Hydrogen peroxide sensor; Pb nanowires; Reduced graphene oxide