Photocatalytic
degradation of fast green dye using green synthesized nickel oxide nanoparticles
Paliwal Gaurav, Ameta Neeraj and Tak Paras
Res. J. Chem. Environ.; Vol. 29(12); 23-31;
doi: https://doi.org/10.25303/2912rjce023031; (2025)
Abstract
This study explores the photocatalytic degradation of Fast Green FCF dye using nickel
oxide (NiO) nanoparticles synthesized through a green synthesis approach. The efficiency
of the degradation process was found to be influenced by several parameters including
pH, the amount of NiO catalyst, dye concentration and light intensity. Radical scavenging
experiments revealed that hydroxyl radicals are primarily responsible for the dye's
degradation.
The reaction kinetics was monitored using spectrophotometers and followed a pseudo-first-order
model. The photocatalytic process was sensitive to variations in operational conditions
such as catalyst dosage, dye concentration, pH level and light exposure. Experimental
evidence supports a photochemical mechanism for the breakdown of Fast Green FCF.
