Many applications have been used to synthesize bimetallic nanoparticles, especially as larvicidal agents, so these bimetallic nanoparticles need to be generated via a cost-effective and eco-friendly path. The green synthesis of Ag-Co hybrid nanoparticles obtained from Palmyra palm aqueous root extract is stated here. The formation of hybrid nanoparticles was detected by a change in color from light pink to light brown and further analyzed by UV-Vis and FT-IR spectrophotometers. The maximum absorption wavelength, λmax, was found to be 420 nm, as calculated by the UV-Visible Spectrophotometer. The FT-IR showed the BMNPs' formation and stabilization. The nanolarvicidal potency was assessed by applying varying concentrations from 5 to 50 mg/L to the first to fourth larval stalks and recording a percentage mortality rate after 24 hours. Probit analysis showed that for the first instar, LC50 and LC90 were 5,237 mg/L and 49,240 mg/L, 9,310 mg/L and 94,969 mg/L for the second instar, 13,626 mg/L and 105,542 mg/L for the third/4th instar. Therefore, this finding indicates that nanoparticles can be used as a possible monitor for the growth of the larval population. These plant-mediated nanoparticles were active against the mosquito larvae of Culex quinquefasciatus.
Author (s) Details
Dr. Wilson Lamayi Danbature
Department of Chemistry, Gombe State University, Gombe, Nigeria.
Zaccheus Shehu
Department of Chemistry, Gombe State University, Gombe, Nigeria.
Mela Yoro
Department of Chemical Sciences, Federal University Kashere, Gombe, Nigeria.
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