Open AccessPreparation of Spherical Gold Nanoparticles Capped by Fragaria ananassa (Strawberry) Fruit Extract and their Catalytic Activity for Degradation of Industrial Dyes
Author(s) -
Ami Ansul Shah,
Belina Xavier,
D. Jayalakshmi
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22463
Subject(s) - chemistry , colloidal gold , zeta potential , surface plasmon resonance , nanoparticle , dynamic light scattering , adsorption , fourier transform infrared spectroscopy , catalysis , high resolution transmission electron microscopy , aqueous solution , chemical engineering , fragaria , noble metal , nanotechnology , nuclear chemistry , transmission electron microscopy , organic chemistry , materials science , botany , engineering , biology
The prospect of developing new approaches in the assembly of noble metal nanoparticles and its functions has been garnering intense interest among researchers in various fields. The green synthesis method is an evolving trend as it is environment benign and aids in large-scale formation of nanoparticles. The versatile properties of green synthesized gold nanoparticles (AuNPs) like surface plasmon resonance, stability and morphology are examined by UV-visible spectroscopy (UV-Vis), dynamic light scattering (DLS), zeta potential (ZP) and high resolution transmission electron microscopy (HRTEM) studies at pH 7. Fourier transform-infrared (FT-IR) analysis confirms the pivotal role of anthocyanins and polyphenols in Fragaria ananassa (strawberry) fruit extract for the capping of AuNPs. The size of gold nanoparticles is in the range of 10 to 40 nm and they exhibit greater negative value of zeta potential. The catalytically active AuNPs follow the pseudo-first order kinetic model and takes 10 min for rapid degradation and adsorption of methylene blue dye from aqueous solution. These results confirm that Fragaria ananassa has a remarkable function in the plant-mediated synthesis of AuNPs and thus can emerge as a positive platform to convert water pollutants into harmless molecules.