Development of Apple Tissue Based Biocathode and MWCNT−Pt−Au Nanomaterial Based Bioanode Biofuel Cell

Abstract

A biofuel cell (BFC) was fabricated by combining multiwalled carbon nanotube ‐platinum‐gold (MWCNT−Pt−Au) hybrid nanomaterial, glucose oxidase (GOx) and benzoquinone included carbon felt electrode (CFE) bioanode with apple tissue included CFE biocathode. The working parameters of bioanode were optimized both experimentally and chemometrically. For the biocathode, apple, banana and pear tissues were tried and best power output was obtained with apple tissue. By combining MWCNT−Pt−Au/GOx/CFE bioanode with apple tissue based biocathode, single cell, double cell with membrane and with salt‐bridge BFCs were formed. The best power output with highest current density were obtained with single cell BFC.

Electro-Nano Diagnostic Platform Based on Antibody–Antigen Interaction: An Electrochemical Immunosensor for Influenza A Virus Detection

“…For this purpose, activated MWCNTs were used. First of all, in order to perform the acid activation procedure, the proper amount of MWCNT powder was sonicated in 40 mL of acid mixture including H 2 SO 4 /HNO 3 (3:1 v/v) for 6 h. After that, the activated MWCNT powder was rinsed with pure water, centrifuged, and then dried in a vacuum oven at 50 • C for 14 h. Then, platinum nanoparticle (PtNP) and gold nanoparticle (AuNP) or only AuNP deposition procedure on MWCNT was started with the sonication of 20 mg activated MWCNT in the presence of 20 mL of the Au and Pt nanoparticle solutions (for MWCNT-Au-Pt) or only AuNp (for MWCNT-Au) solution, which were prepared according to previous studies [35,36]. After the sonication step for 4 h, the mixture was annealed at 150 • C for 4 h to increase functionality.…”

“…Therefore, sensitive, accurate, and practical systems for swine flu diagnosis are tremendously needed. To date, electrochemical immunosensors containing many different modifying materials have been developed for the detection of H1N1 [14,35]. Veerapandian et al reported the development of an electrochemical sensor platform composed of methylene blue-electro-adsorbed graphene oxide nanostructures modified with monoclonal antibodies against the H proteins of H1N1 [36].…”