Synthesis of Graphene Oxide Nanoparticles by Laser Ablation System

Abstract

In this study, graphene oxide (GO) and reduced graphene oxide were synthesized by pulsed Nd:YAG laser with a fundamental wavelength (1064 nm) focused on the pure graphite target which was immersed in distilled water. Different pulse energies were applied in two cases; with and without magnetic field. The synthesized GO and rGO nanoparticles were characterized by UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM) with and without magnetic field. The data show the presence of a magnetic field which illustrated increasing oxygen functional groups of GO. This caused a change in the morphology of the surface of GO, increasing crystallite size from 12.19 nm to 71.2 nm. The interlayer distance (d-space) was reduced from 0.4 nm to 0.25 nm and the absorption peaks that appeared in the spectrum were reduced and shifted toward smallest wavelengths, while the stretching vibration of the O-H group peak was shifted toward largest wavelengths.

Removing of Methylene Blue Dye from its Aqueous Solutions Using Polyacrylonitrile/Iron Oxide/Graphene Oxide

“…However, because of the poor contact between the iron catalyst and the carrier materials, most iron-containing catalysts are not practical and increase iron leaching after cyclic use numerous times, resulting in catalytic stability and decreased activity. [13][14][15] The carbon atom is one of the most abundant atoms on Earth, appearing naturally in a variety of forms and as a component in a large number of compounds known as allotropes of carbon [16].These potential characteristics have been used in a variety of applications, including electronics, batteries, sensors, and composite materials. The preparation of hydrogels with exceptional mechanical characteristics drew a large number of people.…”

Influence of a Magnetic Field on the Structure, Morphology and Gas Sensing Characteristics of ZnO: Al Thin Films Prepared by Pulsed Laser Ablation

“…The added impurities may be associated with increased oxygen vacancies caused by the ZnO: Al lattice, which is the main factor in the gas sensing mechanism [30], [31]. Figures (9) and (10) illustrate the resistance variation of ZnO: Al0.3 wt% and ZnO: Al0.5 wt% samples prepared without and with the magnetic field, respectively, when exposed to 100 ppm concentration of H2S. The AZO-based sensors were tested at different working temperatures (150, 200, 250, and 300 °C).…”

Graphene Oxide: A Key Solution for Future: Recent Achievements as A New Adsorbent for Water Treatment Applications: Review

“…The modified and improved methods are the traditional and popular techniques that are used to produce GO in the present time. Furthermore, there are novel attempts to synthesize GO using novel technologies such as, electrochemical [31], microwave [32], ultrasonic [33], and laser ablation [34].…”