title: PdCo alloy nanoparticle-embedded carbon nanofiber for ultrasensitive nonenzymatic detection of hydrogen peroxide and nitrite.
abstract: PdCo alloy nanoparticle-embedded carbon nanofiber (PdCo/CNF) prepared by electrospinning and thermal treatment was employed as a high-performance platform for the determination of hydrogen peroxide and nitrite. The as-obtained PdCo/CNF were characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Electrochemical impedance spectroscopy, cyclic voltammetry and differential pulse voltammetry were employed to investigate the electrochemical behaviors of the resultant biosensor. The proposed PdCo/CNF-based biosensor showed excellent analytical performances toward hydrogen peroxide (detection limit: 0.1 μM; linear range: 0.2 μM-23.5 mM) and nitrite (detection limit: 0.2 μM; linear range: 0.4-30 μM and 30-400 μM). The superior analytical properties could be attributed to the synergic effect and firmly embedment of well-dispersed PdCo alloy nanoparticles. These attractive electrochemical properties make this robust electrode material promising for the development of effective electrochemical sensors.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin 130022, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin 130022, China.
authors.forename: Qiaohui
authors.initials: Q
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin 130022, China.
authors.forename: Xueping
authors.initials: X
authors.lastname: Zhang
authors.affiliation: College of Chemistry and Chemical Engineering, Jiangxi Normal University, Jiangxi 330027, China.
authors.forename: Haoqing
authors.initials: H
authors.lastname: Hou
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin 130022, China. Electronic address: youty@ciac.jl.cn.
authors.forename: Tianyan
authors.initials: T
authors.lastname: You
mesh_terms: D000497:Alloys / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D053768:Metal Nanoparticles; D057139:Nanofibers / Q000737:chemistry*; D009573:Nitrites / Q000032:analysis*; D010165:Palladium / Q000737:chemistry*
chemical_list: D000497:Alloys; D009573:Nitrites; D003035:Cobalt; D010165:Palladium; D002244:Carbon; D006861:Hydrogen Peroxide
keywords: Biosensor; Carbon nanofiber; Electrochemistry; PdCo alloy nanoparticle