Electrocatalytic Performance of Chemically Synthesized PIn-Au-SGO Composite toward Mediated Biofuel Cell Anode

Ruma Perveen; Inamuddin; Sufia Ul Haque; Abu Nasar; Abdullah M Asiri; Ghulam Md Ashraf

doi:10.1038/s41598-017-13539-1

Electrocatalytic Performance of Chemically Synthesized PIn-Au-SGO Composite toward Mediated Biofuel Cell Anode

Sci Rep. 2017 Oct 17;7(1):13353. doi: 10.1038/s41598-017-13539-1.

Authors

Ruma Perveen¹, Inamuddin^{2

3}, Sufia Ul Haque¹, Abu Nasar¹, Abdullah M Asiri^{4

5}, Ghulam Md Ashraf⁶

Affiliations

¹ Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India.
² Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia. inamuddin@rediffmail.com.
³ Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah, 21589, Saudi Arabia. inamuddin@rediffmail.com.
⁴ Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
⁵ Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah, 21589, Saudi Arabia.
⁶ King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia. ashraf.gm@gmail.com.

Abstract

The proposed work intended to make an intellectual contribution to the domain of green nanotechnology which emphasizes the chemical synthesis of a conducting nanocomposite based on the incorporation of gold nanoparticles (Au) into the redox matrix of polyindole (PIn) along with the subsequent improvement in the overall properties of the composite by the addition of sulfonated graphene oxide (SGO). The bioanode was developed by the deposition of the PIn-Au-SGO nanocomposite with subsequent immobilization of ferritin (Frt) and glucose oxidase (GOx) on the glassy carbon electrode (GC). The successful application of the PIn-Au-SGO nanocomposite toward the development of a ferritin-mediated glucose biofuel cell anode was studied by the electrochemical characterization of the constructed bioanode (GC-PIn-Au-SGO/Frt/GOx) for the bioelectrocatalytic oxidation of glucose. The maximum current density obtained by the modified bioanode was found to be 17.8 mA cm^-2 at the limiting glucose concentration of 50 mM in 0.1 M K₄Fe(CN)₆ at a scan rate of 100 mVs^-1. The lifetime of the concerned bioelectrode when stored at 4 °C was estimated to be 53 days approximately. The appreciable results of the structural and electrochemical characterization of the PIn-Au-SGO based bioelectrode reveal its potential applications exclusively in implantable medical devices.