1. Sustainable GQDs for potential application in engineering using corn powder as green precursor.
- Author
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Jegannathan, Pushpa, Yousefi, Amin Termeh, Kadri, Nahrizul Adib, and Basirun, Wan Jefrey
- Subjects
VERY large scale circuit integration ,CORN ,METAL powders ,POWDERS ,QUANTUM dots ,RAMAN spectroscopy - Abstract
An alternative way to produce Graphene Quantum Dots (GQDs) economically is proposed in this study where corn powder was used as a green precursor to fabricate GQDs in a hassle less one-step route. These GQDs showed a stable, size-dependent in aqueous solution. The size of GQDs obtained from this work is approximately measure from 0.21 to 5.20 nm. The XRD patterns showed a broad peak at 22 Å. Furthermore, the UV-vis absorption spectrum has a broad peak around the range of 250–350 nm which is ascribed to the typical absorption of n-π* transition of the carbonyl groups. The said sample also exhibited bright green photoluminescence under an UV light. The Raman spectra displayed a D band around 1375 cm
−1 and G band around 1578 cm−1 . The performed analysis confirms that the GQDs by this method has a similar result compared to the other methods. This suggests that corn powder as a precursor can be used to fabricate GQDs in a simplistic and environment-friendly way for potential application in sensors, very large scale integration and energy generation technology. [ABSTRACT FROM AUTHOR]- Published
- 2020
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