Blue, green, red luminescence and infrared response of green synthesized graphene oxide nanoparticles obtained by control numeric assisted laser ablation from lemon peels

In this work, the properties of graphene oxide nanoparticles (GONs) obtained by laser ablation were studied. To obtain the GONs, different laser powers were analyzed. Changes in the chemical and physical properties of the GONs were observed. The morphological analysis was carried out with field emission scanning electron microscopy and transmission electron microscopy. With these microscopies, the formation of layers or flakes of graphene was confirmed. The quantification of the elements present in the GONs was obtained by energy dispersive spectroscopy and showed the composition of graphene oxide. The crystallinity of the GONs was characterized through selected area electron diffraction patterns. Fourier-transform infrared spectroscopy shows the characteristic signals associated with the collection of graphene oxide and also shows the presence of functional groups that can allow the use of these particles in the development of biochemical devices. Raman analysis demonstrates the collection of graphene oxide and fullerenes. Ultraviolet-visible spectroscopy shows four main bands of absorption that were related to graphene oxide and fullerenes. Photoluminescence analysis demonstrates the luminescent properties of the GONs. Four main emissions were observed at 435, 481, 670, and 860 nm and were related to the characteristic graphene oxide emissions and the presence of fullerenes.