The removal of phenol and its derivatives usually depends on the size, morphology of nanoparticles and environmental factors such as pH, temperature, ionic strength and presence of competing pollutants. The size of silver nanoparticles plays a crucial role in removal of phenol and its derivatives. Smaller nanoparticles have high surface area to volume ratio which translates in high surface energy, resulting in increased number of active sites available for adsorption and catalytic degradation . This enhanced surface, improves the interaction between AgNPs and phenolic molecules, which leads to higher removal efficiency . However, agglomeration may occur in extremely small nanoparticles, reducing their effectiveness . Therefore, it is necessary to use surfactants or capping agents like Tween 20 and Polyvinyl pyrrolidone to maintain optimal size for maximum efficiency .