Copper nanoparticles in membrane mimicking vesicles-synthesis and catalytic activity

Copper nanoparticle (CuNPs) were successfully synthesized within the confined volume of niosomal vesicles. Metallic copper nanoparticles have been prepared in niosomal vesicles. The nanoparticle characteristics are guided by the specific properties of the niosomes. It has been found that the hydrophile: lipophile balance (HLB), area per molecule and gel-fluid transition temperature of the surfactants forming the niosome are important factors affecting nanoparticle characteristics. Entrapment ability, hydration volume, vesicle size and “leakiness” are the niosomal parameters that need to be optimized for nanoparticle formation. The synthesized nanoparticles function as very effective catalysts for reduction of Methylene Blue (MB) dye. This report gives a first hand account of how the particle characteristics of the CuNPs synthesized in niosomal vesicles can be related to their efficiency as catalysts. Since use of, niosomes for drug delivery and in cosmetic formations is well documented, the present work indicates the potential for prospective delivery of CuNPs via niosomes for various applications in future.