title: Electrospun carbon nanofibers decorated with Ag-Pt bimetallic nanoparticles for selective detection of dopamine.
abstract: Electrospun nanoporous carbon nanofibers (pCNFs) decorated with Ag-Pt bimetallic nanoparticles have been successfully synthesized by combining template carbonization and seed-growth reduction approach. Porous-structured polyacrylonitrile (PAN) nanofibers (pPAN) were first prepared by electrospinning PAN/polyvinylpyrrolidone (PVP) blend solution, followed by subsequent water extraction and heat treatment to obtain pCNFs. Ag-Pt/pCNFs were then obtained by using pCNFs as support for bimetallic nanoparticle loading. Thus, the obtained Ag-Pt/pCNFs were used to modify glassy carbon electrode (GCE) for selective detection of dopamine (DA) in the presence of uric acid (UA) and ascorbic acid (AA). This novel sensor exhibits fast amperometric response and high sensitivity toward DA with a wide linear concentration range of 10-500 μM and a low detection limit of 0.11 μM (S/N = 3), wherein the interference of UA and AA can be eliminated effectively.
authors.affiliation: State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, P. R. China.
authors.forename: Yunpeng
authors.initials: Y
authors.lastname: Huang
authors.forename: Yue-E
authors.initials: YE
authors.lastname: Miao
authors.forename: Shanshan
authors.initials: S
authors.lastname: Ji
authors.forename: Weng Weei
authors.initials: WW
authors.lastname: Tjiu
authors.forename: Tianxi
authors.initials: T
authors.lastname: Liu
mesh_terms: D002244:Carbon / Q000737:chemistry*; D004298:Dopamine / Q000032:analysis*; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D005898:Glass / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010984:Platinum / Q000737:chemistry*; D016062:Porosity; D014961:X-Ray Diffraction
chemical_list: D010984:Platinum; D002244:Carbon; D006046:Gold; D004298:Dopamine