Plasmonic sensing of Cr(III) and Al (III) ions from aqueous solution by green synthesized gold nanoparticles

In the present work gold nanoparticles were synthesized by green method using Aegle marmelos bark extract and the reaction conditions were optimized. Synthesized nanoparticles were characterized by using different analytical techniques including UV-Visible spectroscopy, FTIR (Fourier Transform Infra Red) spectroscopy, TEM (Transmission electron microscopy), DLS (Dynamic Light Scattering) and Zeta Potential Analyser. The Biosynthesized gold nanoparticles were then used for colorimetric detection of Cr(III) and Al(III) from aqueous medium. It was found that the detection limit with nanoparticles was as low as 0.5 mM for Cr(III) ion and 0.01 mM for Al(III) ions in aqueous medium. CO 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the National Conference on Functional Materials: Emerging Technologies and Applications in Materials Science.