Chonemorpha grandiflora extract mediated synthesis of Ag-ZnO nanoparticles for its anticancer, electrical and dielectric applications

Ambujakshi, N P and Raveesha, H R and Manohara, S R and Dhananjaya, N and Pratibha, S and Shivakumara, C (2019) Chonemorpha grandiflora extract mediated synthesis of Ag-ZnO nanoparticles for its anticancer, electrical and dielectric applications. In: MATERIALS RESEARCH EXPRESS, 6 (9).

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Abstract

A phytosynthesis method is a nontoxic and environmentally friendly approach. We successfully synthesized the spherical Ag-ZnO nanoparticles via phytosynthesis method using Chonemorpha grandiflora leaf extract. The Scherrer's equation revealed the average crystallite size in the range of 20-35 nm which is in good agreement with TEM results. Adsorption peak was found at 380 nm using Diffused reflectance spectra and energy band gap is found to be 3.08-3.18 eV using Kubelka-Munk function. In vitro viability studies on MCF7, HCT116 and A 549 cell lines showed dose-dependent toxicity. Dielectric applications were investigated in the frequency range from 100 Hz to 8MHzat room temperature using LCR meter. The dielectric parameters of Ag-ZnO nanoparticles increased with Ag concentration and decrease with frequency. This behavior may be due to the decrease in the concentration of Ag in ZnO host material. Further, there is an increase inAC electrical conductivity with adding Ag concentration and at higher frequencies which is due to the increase of available charge carriers. The DC conductivity of samples increases from 2.6. x. 10(-5) Sm-1 to 2 x 10(-4) Sm-1 with the increasing Ag content and is highest for 0.1 content.

Item Type:	Journal Article
Publication:	MATERIALS RESEARCH EXPRESS
Publisher:	IOP PUBLISHING LTD
Additional Information:	copyright for this article belongs to IOP PUBLISHING LTD
Keywords:	ZnO:Ag nanoparticles; band gap; dielectric properties; cell line; electrical conductivity
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	08 Aug 2019 08:11
Last Modified:	08 Aug 2019 08:11
URI:	http://eprints.iisc.ac.in/id/eprint/63353

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