Electrodeposition and electrocatalytic properties of Pt/Ni-Co nanowires for non-enzymatic glucose detection

Mahshid, S. S ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2012.10.186
  3. Publisher: 2013
  4. Abstract:
  5. A nanowire arrays system consisting of an ordered configuration of Pt, Ni and Co was constructed in single-bath solution through pulse electrodeposition. This structure was evaluated as a potential amperometric non-enzymatic sensor to detect glucose in alkaline solution. We observed a strong and fast amperometric response at low applied potential of 0.4 V vs. SCE over linear ranges of 0-0.2 mM and 0.2-8 mM glucose with sensitivities of 1125 and 333 μA mM-1 cm-2, respectively. We also observed a low detection limit for glucose of 1 μM. Correlation of the electronic and geometric modifications with the electrochemical performance characteristics enhanced catalytic activity of the electrode by applying the Ni and Co components to Pt nanowires structure. The electrode showed good analytical performance and high selectivity with no interference from other oxidable species, demonstrating its promise for developing an effective glucose sensor
  6. Keywords:
  7. High selectivity ; Electrodeposition ; Nanowires ; Non-enzymatic ; Alkaline solutions ; Amperometric ; Amperometric response ; Analytical performance ; Applied potentials ; Electrocatalytic properties ; Electrochemical performance ; Enhanced catalytic activity ; Glucose detection ; Glucose oxidation ; Linear range ; Low detection limit ; Nanowire arrays ; Ordered configuration ; Pt nanowires ; Pulse electrodeposition ; Electrochemical electrodes ; Glucose sensors ; Platinum ; Glucose
  8. Source: Journal of Alloys and Compounds ; Volume 554 , 2013 , Pages 169-176 ; 09258388 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0925838812019895