title: Sonochemical synthesis of silver nanoparticles using starch: a comparison.
abstract: A novel approach was applied to synthesize silver nanoparticles using starch under sonication. Colloidal silver nanoparticles solution exhibited an increase of absorption from 420 to 440 nm with increase starch quantity. Transmission electron microscopy followed by selected area electron diffraction pattern analysis indicated the formation of spherical, polydispersed, amorphous, silver nanoparticles of diameter ranging from 23 to 97 nm with mean particle size of 45.6 nm. Selected area electron diffraction (SAED) confirmed partial crystalline and amorphous nature of silver nanoparticles. Silver nanoparticles synthesized in this manner can be used for synthesis of 2-aryl substituted benzimidazoles which have numerous biomedical applications. The optimized reaction conditions include 10 ml of 1 mM AgNO3, 25 mg starch, 11 pH range, and sonication for 20 min at room temperature.
authors.affiliation: Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas (ESPE), Sangolqui, Ecuador.
authors.forename: Brajesh
authors.identifier: 0000-0002-0557-9790
authors.initials: B
authors.lastname: Kumar
authors.affiliation: Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas (ESPE), Sangolqui, Ecuador.
authors.forename: Kumari
authors.initials: K
authors.lastname: Smita
authors.affiliation: Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas (ESPE), Sangolqui, Ecuador.
authors.forename: Luis
authors.initials: L
authors.lastname: Cumbal
authors.affiliation: Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas (ESPE), Sangolqui, Ecuador.
authors.forename: Alexis
authors.initials: A
authors.lastname: Debut
authors.affiliation: Department of Chemistry, Kolhan University, Chaibasa, Jharkhand 833202, India.
authors.forename: Ravinandan Nath
authors.initials: RN
authors.lastname: Pathak