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Catalytic activity of TiO 2 nanotubes modified with carbon and Pt nanoparticles for detection of dopamine
766 viewed

Catalytic activity of TiO 2 nanotubes modified with carbon and Pt nanoparticles for detection of dopamine

Mahshid, S

Catalytic activity of TiO 2 nanotubes modified with carbon and Pt nanoparticles for detection of dopamine

Mahshid, S ; Sharif University of Technology | 2011

766 Viewed
  1. Type of Document: Article
  2. DOI: 10.1149/1.3653214
  3. Publisher: 2011
  4. Abstract:
  5. Catalytic activity of carbon/Pt nanoparticles modified TiO 2 nanotubes electrode was studied by using dopamine contained solutions. The TiO 2 nanotubes electrode was prepared using anodizing method in aqueous solution. The electrochemical pulse method was then applied for electrodeposition of Pt nanoparticles onto the TiO 2 nanotubes. Further modification was achieved by decomposition of polyethylene glycol in a tube furnace to have a carbon/Pt nanoparticles modified TiO 2 nanotubes electrode. The final modified electrode could successfully detect the electro-oxidation of dopamine in a ImM contained solution using cyclic voltametry method. Also, a high sensitivity towards the oxidation of dopamine in a phosphate buffer solution (pH 7.00) was achieved using the carbon/Pt TiO 2 nanotubes electrode. The electro-oxidation currents of dopamine were linearly related to the concentration in range of 1.0×10 -6 to 3.5×10 -5M. Furthermore, the modified electrode could directly distinguish the oxidation response of dopamine, ascorbic acid and uric acid in their simultaneous presence
  6. Keywords:
  7. A-carbon ; Anodizing methods ; Ascorbic acids ; Cyclic voltametry ; High sensitivity ; Modified electrodes ; Oxidation response ; Phosphate buffer solutions ; Pt nanoparticles ; Pulse methods ; TiO ; Tube furnaces ; Uric acids ; Amines ; Catalyst activity ; Medical applications ; Nanoparticles ; Neurophysiology ; Organic acids ; Oxidation ; Platinum ; Polyethylene glycols ; Sensors ; Titanium dioxide ; Nanotubes
  8. Source: ECS Transactions ; Volume 35, Issue 35 , 2011 , Pages 53-62 ; 19385862 (ISSN) ; 9781607682950 (ISBN)
  9. URL: http://ecst.ecsdl.org/content/35/35/53