title: Ultrathin graphitic carbon nitride nanosheets: a novel peroxidase mimetic, Fe doping-mediated catalytic performance enhancement and application to rapid, highly sensitive optical detection of glucose.
abstract: In this article, we demonstrate for the first time that ultrathin graphitic carbon nitride nanosheets (g-C3N4) possess peroxidase activity. Fe doping of the nanosheets leads to peroxidase mimetics with greatly enhanced catalytic performance and the mechanism involved is proposed. We further demonstrate the novel use of such Fe-g-C3N4 as a cheap nanosensor for simple, rapid, highly selective and sensitive optical detection of glucose with a pretty low detection limit of 0.5 μM.
authors.affiliation: State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China. sunxp@ciac.jl.cn.
authors.forename: Jingqi
authors.initials: J
authors.lastname: Tian
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.forename: Abdullah H
authors.initials: AH
authors.lastname: Qusti
authors.forename: Abdulrahman O
authors.initials: AO
authors.lastname: Al-Youbi
authors.forename: Xuping
authors.initials: X
authors.lastname: Sun
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry / Q000378:metabolism*; D015374:Biosensing Techniques; D002384:Catalysis; D002712:Chlorides / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry; D005947:Glucose / Q000032:analysis*; D006108:Graphite / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D009195:Peroxidase / Q000737:chemistry / Q000378:metabolism; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001672:Biocompatible Materials; D002712:Chlorides; D005290:Ferric Compounds; D009570:Nitriles; D010087:Oxides; C011206:cyanogen; D006108:Graphite; D006861:Hydrogen Peroxide; D009195:Peroxidase; D005947:Glucose; C024555:ferric chloride