γ-Ray assisted synthesis of silver nanoparticles in chitosan solution and the antibacterial properties

Huang, N. M.; Radiman, Shahidan; Lim, Hong Ngee; Khiew, Poi Sim; Chiu, Wee Siong; Lee, Ka-Heng; Syahida, A N; Hashim, Roslan; Chia, Chin Hua

doi:10.1016/j.cej.2009.07.040

Cited by 71 publications

(50 citation statements)

References 58 publications

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“…38 The nuclei of the individual nanocrystals are attracted to each other by weak van der Waals forces, and the stabilizer provides insulation between the particles by overcoming these forces, a phenomenon seen with both polymers and surfactants. 38,39 Interestingly, this influence was noticed in almost all aspects of our research, including in the antimicrobial susceptibility test. For instance, the surface plasmon resonance peaks of the red samples were obtained immediately after synthesis.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and antimicrobial properties of copper nanoparticles

Usman¹,

Zowalaty²,

Shameli³

et al. 2013

IJN

205

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Copper nanoparticle synthesis has been gaining attention due to its availability. However, factors such as agglomeration and rapid oxidation have made it a difficult research area. In the present work, pure copper nanoparticles were prepared in the presence of a chitosan stabilizer through chemical means. The purity of the nanoparticles was authenticated using different characterization techniques, including ultraviolet visible spectroscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and field emission scanning electron microscopy. The antibacterial as well as antifungal activity of the nanoparticles were investigated using several microorganisms of interest, including methicillin-resistant Staphylococcus aureus , Bacillus subtilis , Pseudomonas aeruginosa , Salmonella choleraesuis , and Candida albicans . The effect of a chitosan medium on growth of the microorganism was studied, and this was found to influence growth rate. The size of the copper nanoparticles obtained was in the range of 2–350 nm, depending on the concentration of the chitosan stabilizer.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and antimicrobial properties of copper nanoparticles

Usman¹,

Zowalaty²,

Shameli³

et al. 2013

IJN

205

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“…Silver nanoparticles are of particular interesting due to their role as substrates in the studies of catalysis (Tsujino and Matsumura 2005;Shimizu et al 2010), surface enhancement, Raman spectroscopy (Debarre et al 2004;Terekhov et al 2011) and in the biomedical field (Xu et al 2006;Liu et al 2010;Krishna Rao et al 2012). Because of their vast applications in various fields, many techniques of synthesizing silver nanoparticles have been investigated and some of them are: chemical reduction (Bhui and Misra 2012), electrochemical reduction (Starowicz et al 2006;Hosseini and Momeni 2010), photochemical reduction (Kutsenko and Granchak 2009), microemulsion (Zhang et al 2011), gamma-ray irradiation (Huang et al 2009;Rao et al 2010), UV irradiation (Spadaro et al 2010), ultrasonic method (Byeon and Kim 2012), microwave method (Nadagouda et al 2011), etc. Different varieties of stabilizers have been used in silver nanoparticles preparation, as mentioned above, to achieve the best control of size, distribution, shape, stability and solubility of silver nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

A novel green one-step synthesis of silver nanoparticles using chitosan: catalytic activity and antimicrobial studies

et al. 2012

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Stable silver nanoparticles were synthesized using chitosan acting as both reducing and stabilizing agent without using any toxic chemicals. This reaction was carried out in an autoclave at a pressure of 15 psi and 120°C temperature by varying the time. The influence of different parameters such as time, change of concentration of silver nitrate and concentration of chitosan on the formation of silver nanoparticles were studied. The synthesized silver nanoparticles were characterized by UV-visible spectroscopy, Fourier transform infrared, X-ray diffraction and transmission electron microscopy. The results of catalytic reduction of 4-nitrophenol by sodium borohydride in the presence of green synthesized silver nanoparticles were presented. The antimicrobial activity of silver nanoparticles was tested against Escherichia coli and Micrococcus luteus and was found to be possessing inhibiting property.

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“…Having mentioned that, Ag-NPs can be successfully synthesized using a variety of green irradiation methods, eg, laser, microwave, ultrasonic wave, gamma, ultraviolet (UV), and ion radiation process in aqueous solution and silver salts. [14][15][16][17][18] Green synthesis of Ag-NPs involves three main steps, which must be evaluated based on green chemistry perspectives, including selection of solvent medium, reducing agent, and nontoxic substances for Ag-NP stability. 19 Layered silicates, eg, montmorillonite (MMT), have been used in polymer nanocomposites with significant improvement in mechanical properties.…”

mentioning

confidence: 99%

Green synthesis of silver/montmorillonite/chitosan bionanocomposites using the UV irradiation method and evaluation of antibacterial activity

Shameli¹,

Ahmad²,

Yunis³

et al. 2010

IJN

186

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Abstract:In this study, silver nanoparticles (Ag-NPs) were synthesized using a green physical synthetic route into the lamellar space of montmorillonite (MMT)/chitosan (Cts) utilizing the ultraviolet (UV) irradiation reduction method in the absence of any reducing agent or heat treatment. Cts, MMT, and AgNO 3 were used as the natural polymeric stabilizer, solid support, and silver precursor, respectively. The properties of Ag/MMT/Cts bionanocomposites (BNCs) were studied as the function of UV irradiation times. UV irradiation disintegrated the Ag-NPs into smaller sizes until a relatively stable size and size distribution were achieved. Meanwhile, the crystalline structure and d-spacing of the MMT interlayer, average size and size distribution, surface morphology, elemental signal peaks, functional groups, and surface plasmon resonance of Ag/MMT/Cts BNCs were determined by powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray fluorescence, Fourier transform infrared, and UV-visible spectroscopy. The antibacterial activity of Ag-NPs in MMT/Cts was investigated against Gram-positive bacteria, ie, Staphylococcus aureus and methicillin-resistant S. aureus and Gram-negative bacteria (ie, Escherichia coli) by the disk diffusion method on Muller-Hinton Agar at different sizes of Ag-NPs. All of the synthesized Ag/MMT/Cts BNCs were found to have high antibacterial activity. These results show that Ag/ MMT/Cts BNCs can be useful in different biologic research and biomedical applications, such as surgical devices and drug delivery vehicles.

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γ-Ray assisted synthesis of silver nanoparticles in chitosan solution and the antibacterial properties

Cited by 71 publications

References 58 publications

Synthesis, characterization, and antimicrobial properties of copper nanoparticles

Synthesis, characterization, and antimicrobial properties of copper nanoparticles

A novel green one-step synthesis of silver nanoparticles using chitosan: catalytic activity and antimicrobial studies

Green synthesis of silver/montmorillonite/chitosan bionanocomposites using the UV irradiation method and evaluation of antibacterial activity

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