The Fundamental of Reduced Graphene Oxide with Nanosilver Composite Films Using the Spin Coating Technique
Engineering and Technology Journal,
2022, Volume 40, Issue 8, Pages 1023-1028
AbstractGraphene oxide synthesis by hummers method and reduction by the green chemical method using green tea. Preparation films with reduced graphene oxide (rGO) and Silver Nanoparticles (AgNPs) by a spin coating method. The preparation films and Nanomaterial characteristics with X-Ray diffraction (XRD) GO has a peak at (2θ = 11.22̊ ). While rGO has a wider peak at (2θ = 26.2̊ ). The (rGO +AgNPs) films have five obvious diffraction angles. In Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX), flaky sheet (rGO), and spherical (AgNPs) with Nanosize about ~20 nm, the peaks of EDX indicated the presence of Carbon, silver, and oxygen. The energy gap was calculated from the absorbance spectrum and seemed to decrease with increasing AgNPs.
- The preparation films have good properties in electronic devices, with an energy gap decreasing from 3.4 to 3.1ev with the increase of AgNPs.
- The extinction coefficient has the maximum value in the visible region.
- The absorption coefficient shows the highest value at 300nm for rGO: AgNPs, and it
- The increase of silver nanoparticle concentration increases the extinction coefficient values, similar to absorption coefficient behavior.
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