Chitosan coated zinc curcumin oxide nanoparticles for the determination of ascorbic acid

Abstract

Zinc curcumin oxide nanoparticles, coated with chitosan (Zn(Cur)O-Chi) were found to be an excellent nanoprobe for the detection of ascorbic acid. These nanoparticles were prepared through a simple green synthesis route. It was confirmed through X-Ray diffraction and thermogravimetric analysis that the formed Zn(Cur)O-Chi NPs were highly crystalline and very stable at high temperature. The interaction of Zn(Cur)O-Chi NPs with ascorbic acid molecule was investigated. It was found that the emission intensity increases with the increase of the ascorbic acid concentration in the range of 0–10 mM with LOD equal to 36 μM. The detection of ascorbic acid using Zn(Cur)O-Chi based on the fluorescence emission technique was found to be fast, stable, easy to manipulate and selective with a recovery range between 94 and 100.6%. © 2021 Elsevier B.V.