Loading...

Template-based electrodeposition of Pt/Ni nanowires and its catalytic activity towards glucose oxidation

Mahshid, S. S ; Sharif University of Technology | 2011

1336 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.electacta.2011.09.083
  3. Publisher: 2011
  4. Abstract:
  5. An electro-catalysis non-enzymatic electrode is proposed based on alloyed Pt/Ni nanowire arrays (NWAs) for the detection of glucose. The Pt/Ni NWAs were prepared by pulse electrodeposition of Pt and Ni within a nano-pore polycarbonate (PC) membrane followed by a chemical etching of the membrane. The electrode structure is characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The resulting Pt/Ni NWAs electrode shows high electrocatalytic activities towards the oxidation of glucose in alkaline solution. Consequently, a sensitive amperometric detection of glucose is achieved under 0.45 V vs. SCE with a low detection limit of 1.5 μM within a wide linear range from 2 μM to 2 mM (R = 0.997). Furthermore, the oxidable species such as ascorbic acid and uric acid show no significant interference in determination of glucose. Finally, the experiment results reveal a very good reproducibility and high stability for the proposed Pt/Ni NWAs electrode
  6. Keywords:
  7. Pt/Ni nanowires ; Alkaline solutions ; Amperometric detection ; Ascorbic acids ; Chemical etching ; Electrocatalytic activity ; Electrode structure ; Glucose oxidation ; High stability ; Low detection limit ; Nanowire arrays ; Non-enzymatic ; Pulse electrodeposition ; Reproducibilities ; Template-based ; Uric acids ; Wide-linear range ; Alkalinity ; Catalytic oxidation ; Electrodeposition ; Glucose ; Ketones ; Nanowires ; Organic acids ; Platinum ; Scanning electron microscopy ; Transmission electron microscopy ; Catalyst activity
  8. Source: Electrochimica Acta ; Volume 58, Issue 1 , 2011 , Pages 551-555 ; 00134686 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S001346861101485X