Nanocarbon Hybrid Films of Reduced Graphene Oxide and N-Doped Graphene Quantum Dots as a Metal-Free Platform for Graphene-Enhanced Raman Scattering.

Hybrid films of reduced graphene oxide (RGO) and nitrogen-doped graphene quantum dots (N-GQDs) were obtained by processing colloidal dispersions of graphene oxide (GO) and N-GQDs. N-GQDs/RGO films with well-dispersed nanophases were prepared by mechanical spraying of an 80:20 v/v ratio of N-GQDs:GO dispersion on glass substrates at 315 °C. In contrast, multilayer assemblies of N-GQDs/RGO films resulted from the two-step process consisting of a GO film prepared by spin coating on a glass substrate and the subsequent mechanical spraying of the N-GQD dispersion at 300 °C.

A simple synthesis of ZnO:CoO nanocomposites by pulsed laser irradiation in liquid.

Nanocomposite materials are emerging in popularity due to their enhanced performance over the constituent materials. In this work, we report the fabrication of zinc oxide: cobalt oxide nanocomposites in a simple, fast and room temperature synthesis with good productivity. The nanocomposites synthesized were characterized by SEM, XPS and UV-Visible spectroscopy to analyze their morphology, composition, chemical states, optical absorption, band gap etc.

Nanostructured SnS Thin Films from Laser Ablated Nanocolloids: Structure, Morphology, Optoelectronic and Electrochemical Properties.

Tin disulfide (SnS ) is a binary chalcogenide semiconductor having applications in solar cells, energy storage, and optoelectronics. SnS thin films were deposited by spraying the nanocolloids synthesized by pulsed laser ablation in liquid. The structure, morphology, and optoelectronic properties were studied for films obtained from two liquid media (ethanol and isopropanol) and after heat treatments at various temperatures.

Effects of Liquid Medium and Ablation Wavelength on the Properties of Cadmium Sulfide Nanoparticles Formed by Pulsed-Laser Ablation.

Pulsed-laser ablation in liquid (PLAL) is a green synthesis technique to obtain semiconductor nanomaterials in colloidal form. Herein, cadmium sulfide (CdS) nanoparticles were synthesized by the pulsed-laser ablation of a CdS target in different liquid media by using λ=532 and 1064 nm outputs from a pulsed (10 ns, 10 Hz) Nd:YAG laser at different ablation fluence values. The morphology, structure, crystalline phase, elemental composition, optical, and luminescent properties of CdS nanomaterials were analyzed by using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV/Vis absorption spectroscopy, and fluorescence spectroscopy.