title: Glucose oxidase-loaded amorphous FeNi-Pt fan-shaped nanostructures and their electrochemical behaviors.
abstract: Glucose oxidase (GOD) loaded amorphous FeNi-Pt fan-shaped nanostructures with the average length of ∼ 7 μm have been synthesized for improving the electrochemical activity of enzyme electrode materials. The electrochemical oxidation of glucose solution has been successfully facilitated using FeNi-Pt fan-shaped nanostructures to load GOD due to their fan-shaped constitution and amorphous nanostructure. Chitosan could provide better response of nanostructure electrode than nafion. Compared with glassy carbon electrode (GCE) modified by chitosan/Fe(40)Ni(40)-Pt(20)/GOD/GCE (GOD-loaded Fe(40)Ni(40)-Pt(20) nanoalloys using chitosan as immobilization-agent), chitosan/Fe(45)Ni(45)-Pt(10)/GOD/GCE presents smaller oxidation and reduction peak potential separation at 0.2912 V. No any electrochemical response can be observed when FeNi-Pt was absent in this electrode system. Additionally, a group of parallel experiments were tested when chitosan was changed to nafion. When Fe(40)Ni(40)-Pt(20) nanostructure was employed to the electrode system, the oxidation and reduction peaks potentials were -0.7341 V and -0.4943 V, respectively, with a peak potential separation of 0.3371 V.
authors.affiliation: Department of Chemistry, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China.
authors.forename: Na
authors.initials: N
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China; Shanghai Key Lab Development & Application MetalFunction Material, Tongji University, Shanghai 200092, China. Electronic address: m_wen@tongji.edu.cn.
authors.forename: Ming
authors.initials: M
authors.lastname: Wen
authors.affiliation: Department of Chemistry, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China; Shanghai Key Lab Development & Application MetalFunction Material, Tongji University, Shanghai 200092, China.
authors.forename: Qingsheng
authors.initials: Q
authors.lastname: Wu
mesh_terms: D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D005949:Glucose Oxidase / Q000378:metabolism*; D007501:Iron / Q000737:chemistry*; D060328:Magnetic Phenomena; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D009532:Nickel / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D010984:Platinum / Q000737:chemistry*; D013696:Temperature
chemical_list: D010984:Platinum; D009532:Nickel; D007501:Iron; D005949:Glucose Oxidase
keywords: Amorphous nanostructure; Chitosan; Electrochemical; Electrode material; GOD