Preparation and characterization of stable monodisperse silver nanoparticles via photoreduction

Xu, Guangnian; Qiao, Xueliang; Qiu, Xiaolin; Chen, Jianguo

doi:10.1016/j.colsurfa.2008.01.056

Cited by 79 publications

(33 citation statements)

References 23 publications

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“…In A5, the absorption peak due to surface plasmon resonance of Ag + was slightly red-shifted to a higher wavelength (408 nm), which indicated the increase in size of the AgNPs. 65,66 Powder X-ray diffraction igure 5 Powder X-ray diffraction patterns of montmorillonite and silver/ montmorillonite/chitosan bionanocomposites for determination of silver crystals at different AgNO 3 concentrations: (A1) 0.5%, (A2) 1.0%, (A3) 1.5%, (A4) 2.0%, and (A5) 5.0%. Abbreviation: MMT, montmorillonite.…”

Section: Ultraviolet-visible Spectroscopymentioning

confidence: 99%

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Shameli¹,

Ahmad²,

Zargar³

et al. 2011

IJN

138

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Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into the lamellar space layer of montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in the absence of any heat treatment. AgNO3, MMT, Cts, and NaBH4 were used as the silver precursor, the solid support, the natural polymeric stabilizer, and the chemical reduction agent, respectively. MMT was suspended in aqueous AgNO3/Cts solution. The interlamellar space limits were changed (d-spacing = 1.24–1.54 nm); therefore, AgNPs formed on the interlayer and external surface of MMT/Cts with d-average = 6.28–9.84 nm diameter. Characterizations were done using different methods, ie, ultraviolet-visible spectroscopy, powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray fluorescence spectrometry, and Fourier transform infrared spectroscopy. Silver/montmorillonite/chitosan bionanocomposite (Ag/MMT/Cts BNC) systems were examined. The antibacterial activity of AgNPs in MMT/Cts was investigated against Gram-positive bacteria, ie, Staphylococcus aureus and methicillin-resistant S. aureus and Gram-negative bacteria, ie, Escherichia coli , E. coli O157:H7, and Pseudomonas aeruginosa by the disc diffusion method using Mueller Hinton agar at different sizes of AgNPs. 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 biological research and biomedical applications, including surgical devices and drug delivery vehicles.

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Section: Ultraviolet-visible Spectroscopymentioning

confidence: 99%

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Shameli¹,

Ahmad²,

Zargar³

et al. 2011

IJN

138

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“…Photoreduction of silver salt in the presence of PVP or citrate by ultraviolet (UV) light is another simple and effective strategy to produce AgNPs [11,13,14]. However, most photoreduction methods still use organic solvents, such as PVP, and are unable to control the size of obtained AgNPs [11,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…However, most photoreduction methods still use organic solvents, such as PVP, and are unable to control the size of obtained AgNPs [11,13,14].…”

Section: Introductionmentioning

confidence: 99%

Current Development of Silver Nanoparticle Preparation, Investigation, and Application in the Field of Medicine

Murphy

Ting

Zhang

et al. 2015

Journal of Nanomaterials

140

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The invited review covers different research areas of silver nanoparticles (AgNPs), including the synthesis strategies of AgNPs, antimicrobial and anti-inflammatory properties of AgNPs, osteoconductive and osteoinductive activities of AgNP-based materials, and potential toxicity of AgNPs. The potential mechanisms of AgNP's biological efficacy as well as its potential toxicity are discussed as well. In addition, the current development of AgNP applications, especially in the area of therapeutics, is also summarized.

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“…The physical (Xu et al 2008) and chemical processes (Wang et al 2005) are the classical general methods used for the fabrication of nanoparticles, but these methods are not environmentally benign (Dubey et al 2010) and due to the presence of some toxic metals in the synthesis process that may create some dicey effects in biomedical applications (Bar et al 2009a). These snags in the nanoparticle synthesis are overcome by microbe-mediated and plant-mediated biological process and this bio-route attracts a considerable interest because of its eco-friendliness and biocompatibility (Krumov et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Coleus aromaticus leaf extract mediated synthesis of silver nanoparticles and its bactericidal activity

2012

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The utilization of various plant resources for the biosynthesis of metallic nanoparticles is called green nanotechnology, and it does not utilize any harmful chemical protocols. The present study reports the plantmediated synthesis of silver nanoparticles using the plant leaf extract of Coleus aromaticus, which acts as a reducing and capping agent. The silver nanoparticles were characterized by ultraviolet visible spectroscopy, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and the size of the silver nanoparticles is 44 nm. The bactericidal activity of the silver nanoparticles was carried out by disc diffusion method that showed high toxicity against Bacillus subtilis and Klebsiella planticola. Biosynthesis of silver nanoparticles by using plant resources is an eco-friendly, reliable process and suitable for large-scale production. Moreover, it is easy to handle and a rapid process when compared to chemical, physical, and microbe-mediated synthesis process.

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Preparation and characterization of stable monodisperse silver nanoparticles via photoreduction

Cited by 79 publications

References 23 publications

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Current Development of Silver Nanoparticle Preparation, Investigation, and Application in the Field of Medicine

Coleus aromaticus leaf extract mediated synthesis of silver nanoparticles and its bactericidal activity

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