title: Preparation and characterization of AuNPs/CNTs-ErGO electrochemical sensors for highly sensitive detection of hydrazine.
abstract: A highly sensitive electrochemical sensor of hydrazine has been fabricated by Au nanoparticles (AuNPs) coating of carbon nanotubes-electrochemical reduced graphene oxide composite film (CNTs-ErGO) on glassy carbon electrode (GCE). Cyclic voltammetry and potential amperometry have been used to investigate the electrochemical properties of the fabricated sensors for hydrazine detection. The performances of the sensors were optimized by varying the CNTs to ErGO ratio and the quantity of Au nanoparticles. The results show that under optimal conditions, a sensitivity of 9.73μAμM(-1)cm(-2), a short response time of 3s, and a low detection limit of 0.065μM could be achieved with a linear concentration response range from 0.3μM to 319μM. The enhanced electrochemical performances could be attributed to the synergistic effect between AuNPs and CNTs-ErGO film and the outstanding catalytic effect of the Au nanoparticles. Finally, the sensor was successfully used to analyse the tap water, showing high potential for practical applications.
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
authors.forename: Zhenting
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
authors.forename: Yongjiao
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
authors.forename: Pengwei
authors.initials: P
authors.lastname: Li
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
authors.forename: Wendong
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Lian
authors.affiliation: Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China. Electronic address: hujie@tyut.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.affiliation: Ecole Normale Supérieure, CNRS-ENS-UPMC UMR 8640, Paris 75005, France. Electronic address: yong.chen@ens.fr.
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
mesh_terms: D055664:Electrochemical Techniques; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006834:Hydrazines / Q000032:analysis* / Q000737:chemistry; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*
chemical_list: D006834:Hydrazines; D037742:Nanotubes, Carbon; D010087:Oxides; C029424:hydrazine; D006046:Gold; D006108:Graphite
keywords: Au nanoparticles; Carbon nanotubes; Hydrazine sensor; Reduced graphene oxide