A polyvinylpyrrolidone (PVP)/Ag
nanocomposite was prepared by reduction of silver nitrate in ethylene-glycol in
the presence of a polymeric protective agent (i.e., poly
(N-vinylpyrrolidone)). The size dependent color variation of this nanocolloid
is a clear indication of the presence of Ag as nanoparticles in the polymer
matrix. The nonlinear optical properties were studied by Z-scan technique in
which a Q-switched Nd: YAG laser with a pulse width of 7 ns at 532 nm was used
as the source of light. Z scan measurement shows that Ag/PVP exhibits third order
Nonlinear Optical effects. The peak-valley curve from closed aperture
measurement indicates the self-defocusing process. The third order nonlinear
optical parameters n2, β, χ3 are found to be of the orders of 10-9 esu, 10-9 m/W, 10-11 esu respectively. The very strong Plasmon resonance peak at 419 nm was observed
and is a clear consequence of the nanosize of dilute Ag particles. The optical
band gap of this nanomaterial was calculated as 2.535 eV. The XRD pattern
indicates the presence of crystalline Ag and the average grain size was
obtained as 17.4 nm. The SEM micrograph confirms this observation. Thermal
Gravimetric Analysis implies that Ag/PVP nanocomposite exhibits high degree
of thermal stability.
Cite this paper
Krishnan, P. M. G. , Sobha, A. , Balakrishnan, M. P. and Sumangala, R. (2014). Synthesis and Characterization of Ag/PVP Nanocomposites by Reduction Method. Open Access Library Journal, 1, e519. doi: http://dx.doi.org/10.4236/oalib.1100519.
Rishi Pal, C., Suman, M., Tomar, A.K. and Shyam, K. (2011) Effect of Ultraviolet Irradiation on the Optical and Structural Characteristics of In-Situ Prepared PVP-Ag Nanocomposites. Digest Journal of Nanomaterials and Biostructures, 6.
Zhang, Z., Zhang, L., Wang, S., Chen, W. and Lei, Y. (2002) A Convenient Route to Polyacrylonitrile/Silver Nano-particle Composite by Simultaneous Polymerization-Reduction Approach. Polymer, 42, 8315-8318. http://dx.doi.org/10.1016/S0032-3861(01)00285-3
Huang, L.M. and Wen, T.C. (2007) One-Step Synthesis of Silver Nanoparticles and Poly(2,5-dimethoxyaniline) in Poly(Styrene Sulfonic Acid). Materials Science and Engineering: A, 445-446, 7-13. http://dx.doi.org/10.1016/j.msea.2006.05.121
Hatchett, D.W., Josowicz, M., Janata, J. and Baer, D.R. (1999) Electrochemical Formation of Au Clusters in Polyaniline. Chemistry of Materials, 11, 2989-2994. http://dx.doi.org/10.1021/cm990365m
Huang, C.J., Yen, C.C. and Chang, T.C.J. (1991) Studies on the Preparation and Properties of Conductive Polymers. III. Metallized Polymer Films by Retroplating out. Applied Polymer Science, 42, 2237-2245. http://dx.doi.org/10.1002/app.1991.070420814
Gotoh, Y., Igarashi, R., Ohkoshi, Y., Nagura, M., Akamatsu, K. and Deki. S. (2000) Preparation and Structure of Copper Nanoparticle/Poly(Acrylicacid) Composite Films. Journal of Materials Chemistry, 11, 2548-2552. http://dx.doi.org/10.1039/b003899g
Carotenuto, G., Pepe, G.P. and Nicolais, L. (2000) Preparation and Characterization of Nano-Sized Ag/PVP Composites for Optical Applications. Europen Physical Journal B, 16.
Garcia, M.A., de la Venta, J., Crespo, P., Lopis, J.L., Penadés, S., Fernández, A. and Hernando, A. (2005) Surface Pla- smon Resonance of Capped Au Nanoparticles. Physical Review B, 72, 241403(R).
Susie, E. and El-Sayed, M.A. (2005) Why Gold Nanoparticles Are More Precious than Pretty Gold: Noble Metal Surface Plasmon Resonance and Its Enhancement of the Radiative and Nonradiative Properties of Nanocrystals of Different shapes.
Mansoor, S.-B., Ali, A.S., Wei, T.-H., Hagan, D.J. and Van Stryland, E.W. (1990) Sensitive Measurement of Optical Nonlinearities Using a Single Beam. IEEE Journal of Quantum Electronics, 26.
Wang, J.M., Sheik-Bahae, A., Said, A., Hagan, D.J. and Van Stryland, E.W. (1994) Time-Resolved Z-Scan Measurements of Optical Nonlinearities. Journal of the Optical Society of America B, 11.
Esmaeil Shahriari, W., Mahmood, M.Y., Kazem, N. and Elias, S. (2010) The Optical Nonlinearity of Au and Ag Nanoparticle Prepared by the r-Radiation Method. American Journal of Engineering and Applied Sciences, 3, 260-264. http://dx.doi.org/10.3844/ajeassp.2010.260.264
Rawat, A., Mahavar, H.K., Chauhan, S., Tanwar, A. and Singh, P.J. (2012) Optical Bandgap of Polyvinylpyrrolidone/ Polyacrilamide Blend Thinfilm. Indian Journal of Pure and Applied Physics, 50.
Hyun-Ki, H., Chan-Kyo, P. and Myoung-Seon, G. (2010) Preparation of Ag/PVP Nanocomposites as a Solid Precursor for Silver Nanocolloids Solution. Bulletin of the Korean Chemical Society, 31, 1252-1256. http://dx.doi.org/10.5012/bkcs.2010.31.5.1252
Kothapalle, S., Koramala, N.K., Naresh, V. and Srini-vasa, B. (2011) Structural and Optical Properties of Li : PVP & Ag : PVP Polymer Films. Materials Sciences and Applications, 2, 1688-1696. http://dx.doi.org/10.4236/msa.2011.211225
Khanna, P.K., Narendra, S., Shobhit, C. and Viswanath, A.K. (2005) Synthesis of Ag/polyaniline Nanocomposite via an in Situ Photo-Redox Mechanism. Materials Chemistry and Physics, 92, 214-219. http://dx.doi.org/10.1016/j.matchemphys.2005.01.011
Shawkat, S.G., Shahidan, R., Lee, Y.H., Elias Saion, G.H. and Mohamed, S. (2010) Synthesis and Characterization of Silver/Polyvinilpirrolidone (Ag/PVP) Nanoparticles Using Gamma Irradiation Techniques. American Journal of Applied Sciences, 7, 2010.