Green synthesis of Ananas comosus (L.) Merr. based-silver nanoparticles and determination of their potential in electrochemical detection of H2O2

Abstract It is possible to synthesize silver nanoparticles, which are used to increase the conductivity of carbon paste electrodes used in the design of biosensors that enable the determination of the amount of H 2 O 2 in foods quickly, practically, and at low concentrations. Silver nanoparticles used in electrode modification could be obtained cheaply and eco-friendly by green synthesis technique in which bio-waste is used as electron precursor. In this study, the bio-waste leaves of pineapple ( Ananas comosus (L.) Merr.) were used in the green synthesis of silver nanoparticles (A-AgNPs). Main aim of this study is to determine the potential usage of synthesized A-AgNPs in the area of new biosensor applications. It was determined that A-AgNPs had maximum absorbance at ~ 450 nm, sized between ~ 40 and 70 nm, strong signal at 3 keV, and silver peaks representing 111°, 200°, 220°, and 311° at 2θ. The carbon paste electrode (CPE) was modified with the characterized A-AgNPs and linear detection range of H 2 O 2 was determined as 0.1–1000 µM. It was determined that silver nanoparticles obtained from waste pineapple leaves increased the surface functionality and enabled the determination of H 2 O 2 in a wider concentration range. It could be conclueded that the synthesized nanoparticles have the potential to be used in biosensor technology. Therefore, bio-wastes can be used for nanoparticle synthesis in an environmentally friendly and economically feasible way.