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


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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    • "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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    Ceramics International 04/2015; 41(3-3, Part A):4123-4128. DOI:10.1016/j.ceramint.2014.11.108 · 2.61 Impact Factor
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    • "Roots of plants are known to exude a variety of biomolecules viz. organic acids, amino acids, phenolics etc. [46] which have been shown to possess capacity to reduce Ag+ and generate silver nanoparticles [11], [47], [48]. To evaluate if capacity of root system of plants to reduce Ag+ and generate Ag nanoparticles exogenously, recorded during present investigations is due to biomolecules that are exuded by the roots, 2 sets of investigations were carried. "
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    • "Meanwhile, subjecting the gel containing AgNO 3 to γ-rays induces the formation of Ag nanoparticles that can be characterized by diffracting peaks at 2θ values of 37.71, 44.91, 63.81 and 76.91, representing 111, 200, 220 and 311 Bragg's reflections of FCC structure of metallic Ag (Patterson, 1939; Abdel-Mohdy, 2013). The Ag nanoparticles formed in the background AgNO 3 gels by heating during preparation (Darroudi et al., 2011; Dong, et al., 2014) is reported to have a particle size higher than 100 nm. The average particle size at 10, 50 and 100 Gy of the AgNO 3 gel is recorded as 65.5 78.41, 50.8 7 121 and 66.6776.11, "
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