title: Nanopillar films with polyoxometalate-doped polyaniline for electrochemical detection of hydrogen peroxide.
abstract: Design and fabrication of electrodes is key in the development of electrochemical sensors with superior electrochemical performances. Herein, an enzymeless electrochemical sensor is developed for detection of hydrogen peroxide based on the use of highly ordered polyoxometalate (POM)-doped polyaniline (PANI) nanopillar films. The electrodeposition technique enables the entrapment of POMs into PANI during electropolymerization to produce thin coatings of POM-PANI. Electrochemical investigations of the POM-PANI/nanopillar electrode showed well-defined multiple pairs of redox peaks and rapid electron transfer. The nanopillar structure facilitated the diffusion of the electrolyte and thus, enhanced the redox reaction. In particular, the POM-PANI/nanopillar electrode was incorporated into a flow injection biosensor and it demonstrates its electrocatalytic activity to detect hydrogen peroxide 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. bgchoi@kangwan.ac.kr.
authors.forename: Dong Seok
authors.initials: DS
authors.lastname: Kim
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 25913, Republic of Korea. bgchoi@kangwan.ac.kr.
authors.forename: Jo Hee
authors.initials: JH
authors.lastname: Yoon
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 25913, Republic of Korea. bgchoi@kangwan.ac.kr.
authors.forename: Seok Bok
authors.initials: SB
authors.lastname: Hong
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea.
authors.forename: Soon Woo
authors.initials: SW
authors.lastname: Jeong
authors.affiliation: Device Process Technology Team, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea.
authors.forename: Dong Eun
authors.initials: DE
authors.lastname: Yoo
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.
authors.forename: Kyoung G
authors.initials: KG
authors.lastname: Lee
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 25913, Republic of Korea. bgchoi@kangwan.ac.kr.
authors.forename: Bong Gill
authors.initials: BG
authors.lastname: Choi
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D004563:Electrochemistry; D004566:Electrodes; D006861:Hydrogen Peroxide / Q000032:analysis* / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D017973:Tungsten Compounds / Q000737:chemistry*; D000099294:Polyoxometalates
chemical_list: D000814:Aniline Compounds; D006861:Hydrogen Peroxide; D017973:Tungsten Compounds; C416807:polyaniline; C102296:polyoxometalate I; D000099294:Polyoxometalates