title: A novel non-enzymatic glucose sensor modified with Fe2O3 nanowire arrays.
abstract: Fe(2)O(3) was generally considered to be biologically and electrochemically inert, and its electrocatalytic functionality has been rarely realized directly in the past. In this work, Fe(2)O(3) nanowire arrays were synthesized and electrochemically characterized. The as prepared Fe(2)O(3) nanomaterial was proved to be an ideal electrode material due to the intrinsic peroxidase-like catalytic activity. The Fe(2)O(3) nanowire array modified glucose sensor exhibited excellent biocatalytic performance towards the oxidation of glucose with a response time of <6 s, a linear range between 0.015-8 mM, and sensitivity of 726.9 μA mM(-1)cm(-1). Additionally, a high sensing selectivity towards glucose oxidation in the presence of ascorbic acid (AA) and dopamine (DA) has also been obtained at their maximum physiological concentrations, which makes the Fe(2)O(3) nanomaterial promising for the development of effective electrochemical sensors for practical applications.
authors.affiliation: School of Biochemical and Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Cao
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry; D001786:Blood Glucose / Q000032:analysis*; D002384:Catalysis; D004298:Dopamine / Q000737:chemistry; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D004798:Enzymes / Q000378:metabolism; D005290:Ferric Compounds / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction
chemical_list: D001786:Blood Glucose; D004798:Enzymes; D005290:Ferric Compounds; C000499:ferric oxide; D001205:Ascorbic Acid; D004298:Dopamine