Gamma radiation assisted reduction of graphene oxide in Persea americana Mill. seed extract: characterization and oxygen reduction reaction in alkaline and neutral media
Nkosingiphile E. Zikalala, Shohreh Azizi, Nomvano Mketo, Ali. A. Zinatizadeh, Touhami Mokrani, Malik M. Maaza
TL;DR
This paper explores using gamma radiation with avocado seed extract to efficiently reduce graphene oxide into a material useful for oxygen reduction reactions.
Contribution
A novel gamma radiation-assisted green synthesis method for producing rGO using Persea americana seed extract is introduced.
Findings
Gamma irradiation with Persea americana seed extract effectively reduces graphene oxide to rGO.
The surface area of green-reduced GO is six times higher than the original GO.
The rGO electrode shows a 2e− pathway mechanism in both alkaline and neutral media.
Abstract
Reduced graphene oxide (rGO) exhibits salient properties and thus are applicable in various fields. The major bottleneck to its applications, however, is the long synthesis method that also requires the use of toxic chemicals and high temperatures. Moreover, the surface area of the obtained rGO is often less than that of the starting material, graphene oxide (GO), a phenomenon that compromises its application. In the current study, gamma (γ) irradiation technique where aprotic solvents were substituted with Persea americana Mill. seed extract was investigated for its efficacy in reducing GO to rGO by optimizing the total irradiation dose. The successful synthesis of rGO was confirmed with UV-vis spectrophotometry (UV-vis), Fourier Transform Infrared (FTIR) spectroscopy, and Transmission Electron Microscopy (TEM), among others. The X-ray diffraction (XRD) suggested the dominace of…
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Taxonomy
TopicsGraphene research and applications · Graphene and Nanomaterials Applications · Electrocatalysts for Energy Conversion