Article

Green synthesis and characterization of gelatin-based and sugar-reduced silver nanoparticles

Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Selangor, Malaysia.
International Journal of Nanomedicine (Impact Factor: 4.38). 03/2011; 6(1):569-74. DOI: 10.2147/IJN.S16867
Source: PubMed

ABSTRACT

Silver nanoparticles (Ag-NPs) have been successfully prepared with simple and "green" synthesis method by reducing Ag(+) ions in aqueous gelatin media with and in the absence of glucose as a reducing agent. In this study, gelatin was used for the first time as a reducing and stabilizing agent. The effect of temperature on particle size of Ag-NPs was also studied. It was found that with increasing temperature the size of nanoparticles is decreased. It was found that the particle size of Ag-NPs obtained in gelatin solutions is smaller than in gelatin-glucose solutions, which can be related to the rate of reduction reaction. X-ray diffraction, ultraviolet-visible spectra, transmission electron microscopy, and atomic force microscopy revealed the formation of monodispersed Ag-NPs with a narrow particle size distribution.

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    • "Taking the principles of green chemistry into account, it was reported that for the synthesis of Ag-NPs they have used starch as stabilizing M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT agent[18]and glucose as a reducing agent[16]and both of which are non-toxic, environmentally safe and renewable materials. Several other similar works have been reported which used nontoxic materials such as gelatin and maltose[19,20]and also the use of plant extracts in the synthesis for Ag-NPs.[21,22]. Here we report the use of carboxymethyl sago pulp obtained from sago waste for the synthesis of Ag-NPs via EB radiation. "
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    • "Gelatin as an important protein has a three-chain helical structure and it contains positively and negatively charged and it can stabilize surfaces by the formation of a steric barrier [23]. "
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    • "Therefore, it is essential to seek a simple route for low-cost, large-scale, controlled growth of CeO 2 -NPs at atmospheric pressure and lower temperatures. Lately, many researchers have used natural and organic matrix components such as gelatin, starch, gums, etcetera, in the synthesis of different nanoparticles since they are considered capable of controlling polymorphism, morphology , and the size of nanoparticles [20] [21] [22]. Recently, natural and organic matrices have been used in the synthesis of CeO 2 -NPs [23] [24] [25], due to their quality of being biodegradable and bio-absorbable with degradation products that are non-toxic. "
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