The Fundamental of Reduced Graphene Oxide with Nanosilver Composite Films Using the Spin Coating Technique

Alaloosi, Hamsa A.; Noori, Farah T. M.; Jidran, Abdulhadi K.

doi:10.30684/etj.v40i8.2205

	The Fundamental of Reduced Graphene Oxide with Nanosilver Composite Films Using the Spin Coating Technique
Engineering and Technology Journal
Article 3, Volume 40, Issue 8, 2022, Pages 1023-1028 PDF (825.24 K)
DOI: 10.30684/etj.v40i8.2205
Authors
Hamsa A. Alaloosi^* ¹; Farah T. M. Noori²; Abdulhadi K. Jidran³
¹Laser and Optoelectronics Engineering Dept, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq
²Laser and Optoelectronics Engineering Dept, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
³Physics Dept, Baghdad University-Iraq, Baghdad, Iraq
Abstract
Graphene 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.
Highlights
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.
Keywords
Green synthesis; Hummers methods; spin coating; nanomaterial

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