Fabrication of Vertically aligned Copper Nanotubes as a Novel Electrode for Enzymatic Biofuel Cells. (10th June 2015)

• Record Type: Journal Article
• Authors: Kashyap, Diwakar; Yadav, Raghvendra Singh; Gohil, Smita; Venkateswaran, PS; Pandey, Jitendra K.; Kim, Gyu Man; Kim, Young Ho; Dwivedi, Prabhat K.; Sharma, Ashutosh; Ayyub, Pushan; Goel, Sanket
• Is Part Of: Electrochimica acta. Volume 167(2015)
• Page Start: 213
• Page End: 218
• Publication Date: 2015-06-10
• Subjects: Direct Electron Transfer (DET) -- Biofuel cell -- Enzyme Immobilization -- Copper Nanotube -- Electrochemical Impedance Spectroscopy (EIS); Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.03.164
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Herein, Laccase catalysed oxygen reduction reaction on polyaniline coated copper nanotube bio-cathode was studied. The copper nanotubes were grown in anodic aluminium oxide template on which conductive polymer polyaniline was electrodeposited. Laccase was covalently immobilized using a linker molecule glutraldehyde. The effective wiring of enzyme with bio-cathode was confirmed by linear sweep voltammetry, chronoamperometry and open circuit potential measurement. All electro analysis was performed in conventional three electrode system using platinum wire counter electrode and Ag/AgCl reference electrode. The bio-cathode in air saturated phosphate buffer showed maximum OCP and current of 0.59 V and 140.12 μAcm −2 respectively. Moreover, electrochemical impedance analysis confirmed decrease in charge transfer resistance with the immobilization of enzyme on CuNTs/polyaniline electrode. The bio-cathode showed reproducibility and stability over the period of examination.