Ashwini, R and Mohanta, Z and Kumar, MKP and Santosh, MS and Srivastava, C (2021) Enhanced heterogeneous electron transfer kinetics in Graphene Oxide produced from mechanically milled Graphite. In: Carbon Trends, 5 .
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Abstract
Controlled structural and chemical defects were induced on to graphene oxide (GO) by mechanical milling of the precursor graphitic sheets for different times followed by their chemical oxidation. Raman, XRD, FTIR, XPS and AFM measurements was carried out as an evidence to study the structural and chemical modifications. Milling induces in plane and edge plane defects on graphitic sheets which influence oxidation degree, sp3/sp2 hybridization and functional groups constitution on produced GO. The influence of these structural variations towards electrochemical heterogenous electron transfer (HET) kinetics was explored using redox probe potassium ferricyanide and through non-enzymatic electrochemical detection of Hydrogen Peroxide (H2O2). The increased in-plane and edge plane functionalities actively enhanced the HET kinetics on GO and therefore it's the sensing ability significantly.
| Item Type: | Journal Article |
|---|---|
| Publication: | Carbon Trends |
| Publisher: | Elsevier Ltd |
| Additional Information: | The copyright for this article belongs to the author. |
| Keywords: | Ball milling; defects; graphene oxide; heterogenous electron transfer (HET) kinetics; sp3/sp2 hybridization |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Biosystems Science and Engineering Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 07 Aug 2023 07:20 |
| Last Modified: | 07 Aug 2023 07:20 |
| URI: | https://eprints.iisc.ac.in/id/eprint/82816 |
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