title: Nickel oxide microfibers immobilized onto electrode by electrospinning and calcination for nonenzymatic glucose sensor and effect of calcination temperature on the performance.
abstract: Nickel oxide microfibers (NiO-MFs) were directly immobilized onto the surface of fluorine tin oxide (FTO) electrode by electrospinning and calcination without using any immobilization matrix for nonenzymatic glucose sensor. Morphology and structure of NiO-MFs were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction pattern (XRD). The electrochemical and electrocatalytic performances of the NiO-MFs modified electrodes prepared at different calcination temperatures ranging from 300 to 500°C were evaluated by cyclic voltammetry (CV). The CV results have demonstrated that NiO-MFs modified electrode prepared at 300°C displayed distinct increase in electrocatalytic activity toward the oxidation of glucose, which is explored to develop an amperometric nonenzymatic glucose sensor. The NiO-MFs prepared at 300°C based amperometric nonenzymatic glucose sensor has ultrasensitive current (1785.41 μA mM(-1) cm(-2)) response and low detection limit of 3.3×10(-8) M (signal/noise ratio (S/N)=3), which are among the best values reported in literature. Additionally, excellent selectivity and stability have also been obtained.
authors.affiliation: Key Laboratory of Polyoxometalates Science of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, Jilin, PR China.
authors.forename: Fei
authors.initials: F
authors.lastname: Cao
authors.forename: Shu
authors.initials: S
authors.lastname: Guo
authors.forename: Huiyan
authors.initials: H
authors.lastname: Ma
authors.forename: Decai
authors.initials: D
authors.lastname: Shan
authors.forename: Shengxue
authors.initials: S
authors.lastname: Yang
authors.forename: Jian
authors.initials: J
authors.lastname: Gong
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D003217:Conductometry / Q000295:instrumentation*; D004566:Electrodes; D004595:Electroplating / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005947:Glucose / Q000032:analysis*; D005949:Glucose Oxidase; D008863:Microspheres; D009532:Nickel / Q000737:chemistry*; D012399:Rotation; D013696:Temperature
chemical_list: D009532:Nickel; C028007:nickel monoxide; D005949:Glucose Oxidase; D005947:Glucose