| Abstract |
This study aims to synthesize carbon dots from a natural resource and will be used to detect
a latent fingerprint on a non-porous surface. The carbon dots (CDs) were prepared by adding luminol
to coconut water and ethanol via a hydrothermal method. Luminol enhances the chemiluminescence
of the CDs, which show more distinct blue light under a UV lamp compared with bare CDs. To
detect the latent fingerprint, luminol carbon dots (N-CDs) were combined with commercial starch
and stirred at room temperature for 24 h. Their characteristics and optical properties were measured
using EDX-SEM, HR-TEM, FTIR, XPS, UV–visible absorption, and fluorescence. In this research,
it was found that the N-CDs had a d-spacing of 0.5 nm and a size of 12.9 nm. The N-CDs had a
fluorescence intensity 551% higher than the standard normally used. N-CDs can be used to detect
latent fingerprints on a non-porous surface and are easy to detect under a UV lamp at 395 nm.
Therefore, luminol has a high potential to increase sensitive and stable traces of chemiluminescence
from the green CDs for forensic latent fingerprint detection. |
Publication
Journal Publication
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