Fabrication of Langmuir-Blodgett film from Polyvinylpyrrolidone stabilized NiCo alloy nanoparticles

Kumar, Manish and Pathak, Anjali and Singh, Mandeep and Singla , M.L. (2010) Fabrication of Langmuir-Blodgett film from Polyvinylpyrrolidone stabilized NiCo alloy nanoparticles. Thin Solid Films, 519 (4). pp. 1445-1451. ISSN 0040-6090

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The fabrication of monolayer/multilayer films of Polyvinylpyrrolidone (PVP) stabilized NiCo alloy nanoparticles with an average particle size 7 nm via Langmuir–Blodgett method is presented in this paper. The NiCo alloy nanoparticles were synthesized in ethanol using hydrazine hydrate as reducing agent at 60 °C in the presence of PVP and washed with a mixture of chloroform–methanol (1:1) solution to get pure PVP capped alloy nanoparticles. The NiCo alloy suspension was spread to the interface of air/water and transferred to the glass surface. The formation of a Langmuir monolayer/multilayer of PVP stabilized NiCo particles at air/water interface were revealed with the pressure-area isotherm curve. The transfer of nanoparticles on the glass surface was found to be efficient for the first six layers as exhibited by the pressure-area isotherm and increases in absorption intensity in the UV–Vis range. The atomic force microscopy results show that this film has a cubic symmetry in a two dimensional (2D) array. Manish Kumara, Anjali Pathaka, Mandeep Singhb, M.L. Singlaa,

Item Type: Article
Uncontrolled Keywords: Self-assembly;Arrays;Cubic lattices;Thin films;Atomic force microscopy;Adsorption isotherms;Multilayer;Hydrates; Multilayers;Langmuir layer;Glass;Gas liquid interface;Alcoholic solution;Hydrazine;Ethanol;Nanomaterial synthesis;Langmuir Blodgett method;Particle size;Monolayers;Nanostructured materials;Nanoparticles;PVP;Langmuir-Blodgett films
Subjects: CSIO > Chemistry
Depositing User: Ms T Kaur
Date Deposited: 02 Feb 2012 14:41
Last Modified: 02 Feb 2012 14:41
URI: http://csioir.csio.res.in/id/eprint/123

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