A novel method for ZnO@NiO core–shell nanoparticle synthesis using pulse laser ablation in liquid and plasma jet techniques

Abstract

Given their versatile nature and wide range of possible applications, core–shell nanoparticles (NPs) have received considerable attention. This paper proposes a novel method for synthesizing ZnO@NiO core–shell nanoparticles using a hybrid technique. The characterization demonstrates the successful formation of ZnO@NiO core–shell nanoparticles, which have an average crystal size of 13.059 nm. The results indicate that the prepared NPs have excellent antibacterial activity against both Gram-negative and Gram-positive bacteria. This behavior is primarily caused by the accumulation of ZnO@NiO NPs on the bacteria's surface, which results in cytotoxic bacteria and a relatively increased ZnO, resulting in cell death. Moreover, the use of a ZnO@NiO core–shell material will prevent the bacteria from nourishing themselves in the culture medium, among many other reasons. Finally, the PLAL is an easily scalable, cost-effective, and environmentally friendly method for the synthesis of NPs, and the prepared core–shell NPs could be used in other biological applications such as drug delivery, cancer treatment, and further biomedical functionalization.

Bio-synthesized ZnO nanoparticles and sunlight-driven photocatalysis for environmentally-friendly and sustainable route of synthetic petroleum refinery wastewater treatment

“…From Fig. 2 (b), E g values are 3.16, and 3.07 eV for Green-ZnO, and ZnO-Chem respectively 47 – 49 . It denotes a widening of the optical BG for the Green-ZnO compared to Chem-ZnO.…”

Two–step pulsed laser ablation for preparation NiO@ZnO core-shell nanostructure and evaluation of their antibacterial activity

“…In recent years, a new class of hybrid NPs has been developed, namely, core-shell NPs, which comprise two or more single nanomaterial types [12,13]. Researchers have found that the majority of NPs' physical characteristics are dependent on their nanostructured surface due to the characteristics of NPs that assist in enhancing the number of dangling bonds, which influences their physicochemical qualities [14]. These features could be improved even further by using a coating material to build the outer shell of this nanostructured form.…”

Engineering NiO Thin Film Properties using Ag9+ Ion Irradiation at Various Fluences

“…6 For many of these applications, NiO must be deposited as a thin film with a well-regulated microstructure. There are several physical and chemical approaches including sputtering, 7 pulsed laser deposition, 8 electron-beam evaporation 9 and sol-gel, 10 spray pyrolysis 11 and anodic deposition 12 that have been used to synthesize NiO films, respectively. In comparison to other synthesis approaches, the sol-gel method has several advantages, including cost effectiveness, straightforward implementation, high quality thin films, and the synthesis of films with significant surface areas.…”