Journal of Nanomedicine & Nanotechnology

Detection of H2O2 based on multi-porous SnO2 nanofiber carbon nanotube nanocomposite with facilitated electron transfer of redox protein

24^th World Congress on Nanomaterials and Nanotechnology

July 12-13, 2018 Bangkok, Thailand

A K M Kafi

Universiti Malaysia Pahang, Malaysia

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

A novel H2O2 biosensor is fabricated using multi-porous SnO2 nanofiber/carbon nanotubes (CNTs) composite as a matrix for the immobilization of redox protein onto glassy carbon electrode. The Multi-Porous Nanofiber (MPNFs) of SnO2 is synthesized by electro-spinning technique from the tin precursor. This nanofiber shows high surface area and good electrical conductivity. The SnO2 nanofiber/CNT composite increases the efficiency of biomolecule loading due to its high surface area. The morphology of the nanofiber has been evaluated by Scanning Electron Microscopy (SEM). A direct electron transfer between the proteinâ??s redox center and the glassy carbon electrode is established after fabrication of the electrode. The fabricated electrode shows excellent electro-catalytic reduction to H2O2.The catalysis currents increases linearly to the H2O2 concentration in a wide range of 1.0Ã?10-6-1.4Ã?10-4 M and the lowest detection limit was 30 nM (S/N=3).