2023
DOI: 10.34312/jpj.v5i1.19048
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The Effect of Hydrothermal Temperature and Time of Urea-Doping on the Optical Properties of Lemongrass-Based Carbon Dots

Rahmania Nalwi,
Akhiruddin Maddu,
Mersi Kurniati
et al.

Abstract: CDs sourced from spiced lemongrass have been produced by hydrothermal method at hydrothermal temperatures of 120 ℃, 140 ℃, 160 ℃ and 180 ℃. The addition of urea as a nitrogen source was carried out in the synthesis of carbon nanoparticles at a hydrothermal temperature of 180 ℃ for two hours and three hours to see the effect on the optical properties of the CDs. The addition of urea gave a different effect on the two CDs. But the energy band gap (Eg) of the two becomes narrower. For two hours of hydrothermal du… Show more

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