Effect of Fullerene (C60) on Vibrational Spectra, Hydrodynamic Diameter, Zeta Potential and Microstructures of C60/Poly(vinyl pyrrolidone) Nanofluids in Aqueous Medium

Manoranjan Behera1,* and Shanker Ram2

1Department of Basic Sciences & Humanities, Silicon Institute of Technology, Silicon Hills, Bhubaneswar-751 024, India

2Materials Science Centre, Indian Institute of Technology, Kharagpur-721 302, India

*Corresponding author: E-mail: mano.silicon@gmail.com

Abstract

In this article, we discussed the effect of fullerene (C60) content on the optical, electrokinetic and microstructural properties of poly(vinyl pyrrolidone) C60:PVP nanofluids in water. Vibrational spectra reveal a charge transfer type interaction that exists between poly(vinyl pyrrolidone) and C60 results in an enhancement in vibrational band intensity in some of the selective bands of poly(vinyl pyrrolidone) molecule. Photoluminescence spectra show a decrease in the light intensity of poly(vinyl pyrrolidone) upon addition of C60 due to donor-acceptor type interaction. Dynamic light scattering study show that the hydrodynamic diameter of C60 assemblies varies non-linearly with C60 content. Polydispersity index values evident a well dispersed structures of C60 assemblies with poly(vinyl pyrrolidone) in water. Both zeta potential and surface conductivity values are also varies nonlinearly with C60 content in the nanofluids. Micrographs in C60:PVP nanofluids shows well ordered self assembled nanostructures.

Keywords

Fullerene, Poly(vinyl pyrrolidone), Nanofluids, Dynamic light scattering, Zeta potential, Surface conductivity.

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