Synthesis of silver nanoparticles by γ-ray irradiation in acetic water solution containing chitosan

Chen, Peng; Song, Linyong; Liu, Yankuan; Fang, Yuan

doi:10.1016/j.radphyschem.2006.11.012

Cited by 197 publications

(92 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…58 The increase of the absorbance with increased dose The experiments were repeated three times, and they were averaged to give the data in this table; b The data were obtained by multiplying the absorbance of the corresponding diluted solutions by their dilution factors when diluted solutions were used for the data; of γ-irradiation indicated that the concentration of Ag-NPs also increased. 61 Inductively coupled plasma-optical emission spectroscopy…”

Section: Uv-visible Spectroscopymentioning

confidence: 99%

Synthesis of silver/montmorillonite nanocomposites using γ-irradiation

Shameli¹,

Ahmad²,

Yunis³

et al. 2010

IJN

124

View full text Add to dashboard Cite

Silver nanoparticles (Ag-NPs) were synthesized into the interlamellar space of montmorillonite (MMT) by using the γ-irradiation technique in the absence of any reducing agent or heat treatment. Silver nitrate and γ-irradiation were used as the silver precursor and physical reducing agent in MMT as a solid support. The MMT was suspended in the aqueous AgNO 3 solution, and after the absorption of silver ions, Ag + was reduced using the γ-irradiation technique. The properties of Ag/MMT nanocomposites and the diameters of Ag-NPs were studied as a function of γ-irradiation doses. The interlamellar space limited particle growth (d-spacing [d s ] = 1.24-1.42 nm); powder X-ray diffraction and transmission electron microscopy (TEM) measurements showed the production of face-centered cubic Ag-NPs with a mean diameter of about 21.57-30.63 nm. Scanning electron microscopy images indicated that there were structure changes between the initial MMT and Ag/MMT nanocomposites under the increased doses of γ-irradiation. Furthermore, energy dispersive X-ray fluorescence spectra for the MMT and Ag/ MMT nanocomposites confirmed the presence of elemental compounds in MMT and Ag-NPs. The results from ultraviolet-visible spectroscopy and TEM demonstrated that increasing the γ-irradiation dose enhanced the concentration of Ag-NPs. In addition, the particle size of the Ag-NPs gradually increased from 1 to 20 kGy. When the γ-irradiation dose increased from 20 to 40 kGy, the particle diameters decreased suddenly as a result of the induced fragmentation of Ag-NPs. Thus, Fourier transform infrared spectroscopy suggested that the interactions between Ag-NPs with the surface of MMT were weak due to the presence of van der Waals interactions. The synthesized Ag/MMT suspension was found to be stable over a long period of time (ie, more than 3 months) without any sign of precipitation.

show abstract

Section: Uv-visible Spectroscopymentioning

confidence: 99%

Synthesis of silver/montmorillonite nanocomposites using γ-irradiation

Shameli¹,

Ahmad²,

Yunis³

et al. 2010

IJN

124

View full text Add to dashboard Cite

show abstract

“…It is found in various applications, such as catalysis, electronics, non-linear optics, antimicrobial and biomaterial applications [8] . Several methods have been reported for the synthesis of Ag-NPs, e.g., photochemical reduction [9] , microwave [10] , chemical reduction [11] , γ-irradiation [12] . In this study, we report the synthesis of Ag/MMT/Cts BNCs by UV-irradiation method at different irradiation times.…”

Section: Duementioning

confidence: 99%

Synthesis and Characterization of Silver/Clay/Chitosan Bionanocomposites by UV-Irradiation Method

Ahmad

Shameli

Darroudi

et al. 2009

American Journal of Applied Sciences

View full text Add to dashboard Cite

Problem statement: Silver/Montmorillonite/Chitosan Bionanocomposites (Ag/MMT/Cts BNCs) have been synthesized by UV-irradiation reduction method in the absence of any reducing agent or heat treatment which is used to antibacterial application and medical devices. Approach: MMT, Chitosan and AgNO 3 were used as a solid support, stabilizer and silver precursor, respectively. The properties of Ag/MMT/Cts BNCs were studied as a function of UV-irradiation times. The crystalline structure, d-spacing of interlayer of MMT, the size distributions and surface plasmon resonance of synthesized silver nanoparticles (Ag-NPs) were characterized using Powder X-Ray Diffraction (PXRD), Transmission Electron Microscopy (TEM) and UV-vis spectroscopy. The functional groups of prepared BNCs were also determined by Fourier Transform Infrared (FT-IR). Results: The results obtained from UV-vis spectroscopy of synthesized Ag-NPs showed that the intensity of the maximum wavelength of the plasmon peaks were increased with the increasing in the UV-irradiation times. Results from UV-visible spectroscopy and Transmission Electron Microscopy (TEM) microphotographs show that particles size of Ag-NPs decrease with the increase of UV-irradiation time. Conclusion: UV-irradiation disintegrated the Ag-NPs into smaller size until a relatively stable size and size distribution were achieved. Ag/MMT/Cts BNCs could be suitable to antimicrobial applications and medical devices.

show abstract

“…It was reported that stable silver nanoparticles (5-15 nm) were synthesized in a 1.8-9.0 pH range using this method (Long et al 2007). Silver nanoparticles (4-5 nm) were also synthesized by γ-ray irradiation of acetic water solutions containing silver nitrate and chitosan (Cheng et al 2007). In another study, silver nanospheroids (1-4 nm) were produced by γ-ray irradiation of a silver solution in optically transparent inorganic mesoporous silica.…”

mentioning

confidence: 98%