title: Polyoxometalate-grafted graphene nanohybrid for electrochemical detection of hydrogen peroxide and glucose.
abstract: The electrochemical performances of electrochemical biosensors largely depend on electrode characteristics, such as size, composition, surface area, and electron and ion conductivities. Herein, highly efficient electrocatalytic polyoxometalate (POM) was directly deposited on polymeric ionic liquid (PIL)-functionalized reduced graphene oxide (rGO) in a simple manner. The nano-sized POM with PIL functional groups was uniformly distributed on the surface of rGO sheets. The unique nanostructure of the resultant POM-g-rGO nanohybrids enabled well-defined multiple redox reaction of POMs and rapid electron transfer. In particular, as-prepared nanohybrids demonstrated high electrocatalytic activity for the electrochemical detection of H2O2 and glucose molecules in flow-injection biosensor device with high sensitivity, rapid response time, and low detection limit.
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea.
authors.forename: MinHo
authors.initials: M
authors.lastname: Yang
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 25913, Republic of Korea.
authors.forename: Dong Seok
authors.initials: DS
authors.lastname: Kim
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea.
authors.forename: Tae Jae
authors.initials: TJ
authors.lastname: Lee
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea.
authors.forename: Seok Jae
authors.initials: SJ
authors.lastname: Lee
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea. Electronic address: kglee@nnfc.re.kr.
authors.forename: Kyoung G
authors.initials: KG
authors.lastname: Lee
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 25913, Republic of Korea. Electronic address: bgchoi@kangwon.ac.kr.
authors.forename: Bong Gill
authors.initials: BG
authors.lastname: Choi
mesh_terms: D055664:Electrochemical Techniques; D005947:Glucose / Q000032:analysis*; D006108:Graphite / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties; D017973:Tungsten Compounds / Q000737:chemistry*; D000099294:Polyoxometalates
chemical_list: D005947:Glucose; D006108:Graphite; D006861:Hydrogen Peroxide; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates
keywords: Electrochemical sensor; Graphene; Ionic liquid; Nanohybrid; Polyoxometalate