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Assessment of antioxidant activity of pure graphene oxide (GO) and composite V2O5/GO using DPPH radical and H2O2 scavenging assays
In this research, the Co precipitation method was utilized to synthesize a nanocomposite of vanadium oxide (V 2 O 5 ) and graphene oxide (GO). Pure GO was synthesized by the modified hammers method. Using a 1:2 ratio of GO and V 2 O 5 and heating in the oven at 70 °C leading to the formation of V 2...
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| Published in: | Journal of sol-gel science and technology 2023-12, Vol.108 (3), p.840-849 |
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| Main Authors: | , , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | In this research, the Co precipitation method was utilized to synthesize a nanocomposite of vanadium oxide (V
2
O
5
) and graphene oxide (GO). Pure GO was synthesized by the modified hammers method. Using a 1:2 ratio of GO and V
2
O
5
and heating in the oven at 70 °C leading to the formation of V
2
O
5
/GO nanocomposite. By grafting of GO on V
2
O
5
surface, a high range of graphene oxidation in V
2
O
5
/GO allowed for better reduction with V
2
O
5
metal-oxide. The scanning electron microscope (SEM) images and X-ray diffraction (XRD) spectra provide evidence of the distinct phase of graphene oxide formation. The antioxidant activity of V
2
O
5
/GO nanocomposite was conducted in two vitro assays, focusing on neutralization of 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and H
2
O
2
radicals. The uniqueness of the nanocomposite was evident from its concentration-dependent antioxidant activities. Interestingly, the V
2
O
5
/GO samples has showed 60% antioxidant performance in the H
2
O
2
assays compared to its constituent.
Highlights
Nanocomposite of V
2
O
5
/GO was synthesized by grafting of GO on V
2
O
5
surface.
The oxidation of graphene within the V
2
O
5
/GO system facilitated improved reduction when combined with V
2
O
5
metal oxide.
The distinctiveness of the nanocomposite became apparent through its antioxidant activities, which were dependent on its concentration.
It is noteworthy that the V
2
O
5
/GO samples exhibited a 60% higher antioxidant performance in the H
2
O
2
tests compared to their individual components. |
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| ISSN: | 0928-0707 1573-4846 |
| DOI: | 10.1007/s10971-023-06231-6 |