Synthesis and Characterization of Au/Fe₃O₄ NCs Decorated Graphene Oxide via Pulsed Laser Ablation Technique | ||
| Egyptian Journal of Solids | ||
| Volume 47, Issue 1, 2025, Pages 139-153 PDF (1.6 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejs.2025.360245.1055 | ||
| Authors | ||
| Basma saied1; Horia Fawzy2; Mohammed Diab3; Saied Abdallah4; Sohair Negm* 1 | ||
| 1basic science department, shoubra faculty of engineering, benha university | ||
| 2basic science ,shoubra faculty of engineering, benha university | ||
| 3basic science department, Faculty of Engineering (Shoubra), Banha University, Cairo, Egypt | ||
| 4basic science department, Faculty of Engineering (Shoubra), Benha University, Egypt. | ||
| Abstract | ||
| The demand for nanocomposites (NCs) of graphene and magnetite materials decorated with gold nanoparticles is increasing on account of their applications in science and technology. First, graphene oxide (GO) was prepared using the pulsed laser ablation technique in liquid (PLAL) and then loaded with magnetite (Fe₃O₄) that was prepared by the same technique to form Fe₃O₄/GO nanocomposite (NCs). The Au/Fe₃O₄ NCs were also synthesized and added by volume ratio to the GO solution to form Au/Fe₃O₄/GO NCs. We investigated the functional groups in the three samples using Fourier transform infrared spectroscopy (FTIR). We measured the optical absorption spectra of the samples using UV-visible light. From these optical spectra, we calculated the optical conductivity (σ), absorption coefficient (α), and other related optical properties. We improved the optical absorption and other optical parameters while decreasing the band gap (Eg) from 4.1 eV to 3 eV for the three samples. These materials are suitable for photonic applications, drug delivery applications, and water treatment applications. | ||
| Keywords | ||
| graphene oxide (GO); magnetite (Fe₃O₄); gold/magnetite NCs; and the pulsed laser ablation technique | ||
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