Liji Sobhana, S. S. ; Sundaraseelan, J. ; Sekar, S. ; Sastry, T. P. ; Mandal, A. B. (2009) Gelatin-chitosan composite capped gold nanoparticles: a matrix for the growth of hydroxyapatite Journal of Nanoparticle Research, 11 (2). pp. 333-340. ISSN 1388-0764
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Official URL: http://www.springerlink.com/content/85k32816001m78...
Related URL: http://dx.doi.org/10.1007/s11051-008-9385-0
Abstract
Growth of hydroxyapatite (HA) on gelatin-chitosan composite capped gold nanoparticles is presented for the first time by employing wet precipitation methods and we obtained good yields of HA. Fourier transform infrared spectroscopy (FTIR) spectrum has shown the characteristic bands of phosphate groups in the HA. Scanning electron microscopy (SEM) pictures have shown spherical nanoparticles with the size in the range of 70-250 nm, whereas ≥2-50 nm sized particles were visualized in high resolution transmission electron microscopy (HR-TEM). X-ray diffraction (XRD) spectrum has shown Bragg reflections which are comparable with the HA. Energy dispersive X-ray (EDX) studies have confirmed calcium/phosphate stoichiometric ratio of HA. The thermogravimetric analysis (TGA) has shown about 74% of inorganic crystals in the nanocomposite formed. These results have revealed that gelatin-chitosan capped gold nanoparticles, acted as a matrix for the growth of HA.
Item Type: | Article |
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Source: | Copyright of this article belongs to Springer-Verlag. |
Keywords: | Gelatin-chitosan Composite; Wet Precipitation; Hydroxyapatite; Gold Nanoparticles; Nanocomposite Materials |
ID Code: | 19578 |
Deposited On: | 22 Nov 2010 12:21 |
Last Modified: | 17 May 2016 04:06 |
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