title: High performance of electrocatalytic oxidation and determination of hydrazine based on Pt nanoparticles/TiO2 nanosheets.
abstract: In this work, highly dispersed Pt nanoparticles (PtNPs) were deposited on the surface of the TiO2 nanosheets (TiO2NSs) by the photodeposition method in the presence of methanol as holes scavengers. The results indicated that PtNPs were distributed on TiO2NSs successfully with the diameter of ca. 5-9 nm. The electrochemical experiments such as electrochemical impedance spectroscopy and cyclic voltammetry were used to study the electrochemical properties of the PtNPs/TiO2NSs modified glassy carbon electrode (GCE). The as-prepared PtNPs/TiO2NSs/GCE presents excellent electrocatalytic activity for hydrazine. The sensor can be used to determine hydrazine at low potential with a wide linear range, high sensitivity, and fast response time. Moreover, the sensor exhibits good selectivity and reproducibility. In addition, the recoveries were 100.1-105.3% for hydrazine in the tap water, indicating the PtNPs/TiO2NSs/GCE should be a promising sensor for the determination of hydrazine in real samples.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Yue
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Wenxiu
authors.initials: W
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Miao
authors.initials: M
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Xiangjian
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China. Electronic address: jbjia@ciac.ac.cn.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Jia
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D006834:Hydrazines / Q000032:analysis* / Q000737:chemistry; D007700:Kinetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D006834:Hydrazines; C009495:titanium dioxide; C029424:hydrazine; D010984:Platinum; D014025:Titanium
keywords: Electrocatalytic activity; Hydrazine sensor; Photodeposition; Pt nanoparticles; TiO(2) nanosheets