title: Solvent-assisted morphology confinement of a nickel sulfide nanostructure and its application for non-enzymatic glucose sensor.
abstract: Morphology-controlled synthesis of nickel sulfide (Ni3S2) was performed directly on Ni foam using thioacetamide as a sulfur ion source. Various morphologies of nickel sulfide were fabricated using a hydrothermal process by adjusting the solvent composition of ethanol and water. In the water-dominant condition, a dendrite structure was obtained; otherwise, a flaky structure was achieved. A hierarchical cauliflower-like structure was obtained at a solvent mixture composition of 1:1 and was used as non-enzymatic glucose sensor. The hierarchical Ni3S2 electrode showed a high level of electro-catalytic activity toward the oxidation of glucose (16,460μAmM(-1)cm(-2)) over a wide range of detection (0.0005-3mM) and a low detection limit (0.82μM) with excellent selectivity in the presence of several electroactive species.
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Soochan
authors.initials: S
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Sang Ha
authors.initials: SH
authors.lastname: Lee
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Misuk
authors.initials: M
authors.lastname: Cho
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea. Electronic address: yklee@skku.edu.
authors.forename: Youngkwan
authors.initials: Y
authors.lastname: Lee
mesh_terms: D015374:Biosensing Techniques / Q000379:methods; D001786:Blood Glucose / Q000032:analysis*; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D006801:Humans; D057230:Limit of Detection; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D009532:Nickel / Q000737:chemistry*
chemical_list: D001786:Blood Glucose; D009532:Nickel; C017558:nickel sulfide
keywords: Biosensor; Glucose; Hierarchical cauliflower; Nickel sulfide; Solvent assist