ZnO Nanoparticles: Green Synthesis, Properties and Applications
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2018, Vol 41, Issue 3
Abstract
In this paper, a review, there are presented “Green” routes used in the synthesis of ZnO nanoparticles because they are more eco-friendly alternatives in comparison with chemical and/or physical techniques. Microorganisms, bacteria, enzymes and plant extracts also allow a controlled synthesis and function as stabilizing or hydrolytic agents. The chemical solvents are toxic, and these methods suffer various disadvantages due to the involvement of high temperature and pressure conditions during nanoparticle synthesis. The ZnO nanoparticles are of significant interest as they provide many practical applications in various fields: drugs, cosmetics, textile, electronic and optoelectronic, photocatalysis. The most important application of ZnO nanoparticles would be as antibacterial agents. The increased surface area and smaller size of these particles make them an ideal antibacterial agent. In addition to the green synthesis of ZnO nanoparticles along with their antimicrobial activity the mechanism of this activity was also reviewed. The green synthesis of ZnO nanoparticles from Azadirachta indica, Aloe vera, Murraya koenigii and Anisochilus carnosus were also highlighted.
Authors and Affiliations
Mariana BUŞILĂ
The Use of Systems Analysis in Environmental Engineering
The depletion of energy resources has been of primary concern in the `70s and `80s. In recent years, the decline of the environment due primarily to our energy-related activities has become severe and raises serious conc...
The Influence of the Thermomagnetic Treatments on the Hardness Number of Steels and the Superficial Layers Nitrided Durability
Two types of steels subjected to a nitriding thermo-chemical treatment after thermomagnetic treatments. The structural aspects into superficial layer of these steels are studied during friction process by using of an Ams...
Zinc Layer Removal at the Steel Appliances Scraps
All appliances contain an important quantity of steel and iron. These can be further recycled at the end of product usefulness. A component of the appliances is the bodies. These are made from galvanized steel. A study f...
Recovery of Copper from Waste Cables Used in Electrical Applications
The recycling of copper cables wastes has as main objective the recovery of copper. The effectiveness of this operation is guaranteed by the following factors: infrastructure able to collect, select and sort these wastes...
Melting-Casting Plant Using Vibrating of Melts in order to Obtain Composite with Technological Utility
This paper presents the obtaining of composites materials with technological utility through vibration technology. In order to obtain these composites, and plant was designed and manufactured. In order to show the possib...