Nano-Engineering UV Protective Agents to Enhance Properties ACS_AMI UV suncream nanoparticles sunprotection
By Hussain AhmedOct 13 2022Reviewed by Megan Craig, M.Sc. Zinc oxide nanoparticles have recently attracted significant attention as ultraviolet scatterers because of their potential to shield human skin from UV exposure. However, the acid resistance of ZnO nanoparticles is relatively poor, leading to their decomposition on the human skin and several skin diseases.
UV absorbers made of organic substances and UV scatterers made of inorganic oxide nanoparticles are the two types of UV protectants. UV scatterers, like zinc oxide nanoparticles, are utilized in cosmetic products that are applied directly to the human skin. Enhancing the Acid Resistance of ZnO Nanoparticles Related StoriesRecently, the production of ZnO composites with other oxides has been investigated as a viable technique for improving their acid resistance. Even though silicon dioxide is an excellent contender for the shell layer, previous research has demonstrated that SiO2-coated ZnO composites rapidly leach away ZnO when etched with hydrochloric acid, producing hollow SiO2 nanoparticles.
Additionally, the acid resistance of TiO2 nanoparticles is impressive. Consequently, ZnO/TiO2 core-shell composites can provide excellent acid resistance and UV protection. This technique can be used to create ZnO/TiO2 core-shell particles with high acid resistance by turning the core and shell materials into droplets. The TiO2 particles are then coated at the ZnO particle interface during the solvent evaporation phase.
The titanium precursors were incorporated in the ZnO nanoparticle dispersion mixture and injected into the flame reactors, creating nanocomposites with evenly dispersed titanium and zinc molecules.
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