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Research Journal of Nanoscience and Nanotechnology
  Year: 2015 | Volume: 5 | Issue: 2 | Page No.: 60-73
DOI: 10.3923/rjnn.2015.60.73
Proposing a Feasible Mechanism to Support the Exhibition of Superb Colloidal Stability of Gold Nanoparticles with Poly Vinyl Pyrrolidone in the form of a Nanofluid in N, N’-Dimethyl Formamide
M. Behera

Abstract:
In this article, proposed a probable mechanism to corroborate execution of excellent colloidal stability of gold (Au) nanoparticles (NPs) in presence poly (vinyl pyrrolidone) PVP polymer in N, N’-dimethyl formamide (DMF) solvent, as nanofluids (NFs) in support of experimental outcomes. Appearance of a surface plasmon resonance band near 525 nm in the absorption spectra suggests formation of gold NPs in presence of PVP in DMF. The emergence of X-ray diffraction peaks at 111, 200, 220 and 222 corresponds to diffraction angles 38, 45, 65 and 78, respectively, reveals that Au NPs have fcc crystal structure. Slight red-shift (i.e., from 525-530 nm) in the surface plasmon resonance band of the one year aged sample strongly suggests that Au-NPs are highly stable in presence of PVP, particularly in DMF. An enhancement in the some of the vibration bands of PVP in presence of Au-NPs suggests donor-acceptor type interaction between Au-NPs and PVP via O-atoms. In comparison to bare PVP, an increased zeta potential value with an enhanced surface conductivity in Au-PVP NF in DMF suggests that both PVP and DMF supplies electrons to the surface of Au-NP. In the aged sample, hardly any change in the zeta potential value supports the absorption analyses. Shear thinning characteristics in the Au-PVP NF in DMF suggests presence of cross-linked structure between PVP, DMF and Au-NP. Core-shell structure from the microstructures of the NF demonstrates that PVP and DMF molecules are encapsulating Au-NPs via O-atoms. Development of highly stable Au-NPs is useful for drug delivery applications.
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How to cite this article:

M. Behera , 2015. Proposing a Feasible Mechanism to Support the Exhibition of Superb Colloidal Stability of Gold Nanoparticles with Poly Vinyl Pyrrolidone in the form of a Nanofluid in N, N’-Dimethyl Formamide. Research Journal of Nanoscience and Nanotechnology, 5: 60-73.

DOI: 10.3923/rjnn.2015.60.73

URL: https://scialert.net/abstract/?doi=rjnn.2015.60.73

 
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