TITLE:
Nanolarvicidal Effect of Green Synthesized Ag-Co Bimetallic Nanoparticles on Culex quinquefasciatus Mosquito
AUTHORS:
Wilson Lamayi Danbature, Zaccheus Shehu, Mela Yoro, Muhammad Mustapha Adam
KEYWORDS:
Nanolarvicide, Green Synthesis, Ag-Co Bimetallic Nanoparticles, Culex quinquefasciatus Mosquito
JOURNAL NAME:
Advances in Biological Chemistry,
Vol.10 No.1,
February
27,
2020
ABSTRACT: Synthesis of bimetallic nanoparticles has
employed many applications especially as larvicidal agents, these bimetallic
nanoparticles therefore need to be produced via a cost-effective and eco-friendly route. Here, green
synthesis of Ag-Co hybrid nanoparticles obtained from aqueous root extract of
palmyra palm was reported. The hybrid nanoparticles formation was noticed by a
colour change from light pink to light brown and further studied using UV-Vis and FT-IR spectrophotometers. The maximum
absorption wavelength, λmax as determined by the UV-Visible
Spectrophotometer was found to be 420 nm. The FT-IR showed the
formation and stabilization of the BMNPs. The nanolarvicidal potency was
evaluated by the application of varying concentration ranging from 5 to 50 mg/L against first to fourth instars of larvae
and recording the percentage mortality after 24 hours. Probit analysis showed
the LC50 and LC90 for 1st instar to be 5.237 mg/L and 49.240 mg/L, 9.310 mg/L and 94.969 mg/L for 2nd instar, 13.626 mg/L and 105.542 mg/L for 3rd/4th instars
respectively. This result therefore suggests that the nanoparticles can be used
as potential control for larval population growth.