Degradation of methyl parathion, a common pesticide and fluorescence quenching of rhodamine B, a carcinogen using β-d glucan stabilized gold nanoparticles

الملخص EN

Natural carbohydrate polymer β-d-glucan extracted from Tricholoma crassum (Berk.) Sacc.

predominantly linked by β-glycosidic bonds have been used to synthesize gold nanoparticles (Au NPs).

As glucan is water soluble, the Au NPs are prepared in water medium, a green solvent.

The morphology and characterization of the synthesized Au NPs have been confirmed by various techniques, like TEM, EDX, XRD, UV–Vis and FT-IR spectroscopic studies.

The obtained Au NPs exhibits chemosensing property against Methyl Parathion, a group of highly toxic organophosphorous pesticide, extensively used as an agricultural chemical.

Degradation of parathion using Au NPs lead to water-soluble products thereby reducing the toxicity of Methyl Parathion by disrupting the thiophosphate-ester linkage.

The synthesized Au NPs also act as a good fluorescence quencher of Rhodamine B, a common fluorophore and carcinogenic compound, obeying Stern-Volmer equations.

The β-d-glucan capped Au NPs are safe having possible medicinal usage.