Synthesis of worm like silver nanoparticles in methyl cellulose polymeric matrix and its catalytic activity

Bhui, Dipak Kumar; Misra, Ajay

doi:10.1016/j.carbpol.2012.04.017

Cited by 56 publications

(28 citation statements)

References 50 publications

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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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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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“…Several approaches have been suggested for the synthesis of silver nanoparticles. These approaches propose the preparation of silver nanoparticles into alkaline or acidic media and using toxic reagents, such as sodium borohydride (NaBH 4 ), N, N-dimethylformamide, or hydrazine, as reducing reactants, or ionic surfactants as cetyltrimethylammonium bromide (CTAB) and polyvinylpyrrolidone as stabilization agents [1][2][3][4][5][6][7][8][9][10][11][12]. Nevertheless, these routes generate residues that involved environmental risks.…”

Section: Introductionmentioning

confidence: 99%

Totally Ecofriendly Synthesis of Silver Nanoparticles from Aqueous Dissolutions of Polysaccharides

Garza-Navarro

Aguirre-Rosales

Llanas-Vázquez

et al. 2013

International Journal of Polymer Science

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In this contribution, a totally ecofriendly synthesis of silver nanoparticles from aqueous dissolution of polysaccharides is reported. The synthesis of nanoparticles was performed using aqueous dissolutions of silver nitrate (AgNO 3 ) and carboxymethyl-cellulose (CMC) as both reducing and stabilization agent and using different AgNO 3 : CMC weight ratios. Resultant yellowish to reddish dispersions were characterized by means of transmission electron microscopy and their related techniques, such as bright field and Z-contrast imaging and electron diffraction, as well as ultraviolet-visible and infrared spectroscopic techniques. The experimental evidence suggests that the morphology and particle size distribution of the silver nanoparticles depend on the AgNO 3 : CMC weight ratio. This feature seems to be related to the stabilization given by the CMC matrix, which, according to our experimental findings, is steric in nature. Regarding such experimental evidence, a synthesis mechanism in which CMC acts as stabilizer and reducing agent is proposed.

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“…Among heavy metal nanoparticles, silver nanoparticles have received major attention due to their unique characteristics (chemical stability, catalytic activity or electrical conductivity) resulting in their application in various technologies [3]. The preparation of nanoparticles with narrow particle distribution is crucial for utilization of AgNPs in many applications [4].…”

Section: Introductionmentioning

confidence: 99%

Control over the Biological Synthesis of Ag Nanoparticles by Selection of the Specific Algal Species

Sedláková-Kaduková¹,

Velgosová

Vosátka

et al. 2017

Archives of Metallurgy and Materials

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The application of green synthesis in the nano-science and technology is of great importance in the area of the preparation of various materials. In this work, three selected algal species Parachlorella kessleri, Dictyosphaerium chlorelloides and Desmodesmus quadricauda were successfully used for the preparation of silver nanoparticles (AgNPs). Presence of AgNPs was confirmed by UV-vis spectroscopy and transmission electron microscopy. AgNPs produced by P. kessleri had narrow size distribution and average sizes of 7.6 nm. However, nanoparticle production lasted for long time. Nanoparticle formation by D. chlorelloides was the fastest, although, their average sizes were 23.4 nm with broad size distribution. Nanoparticles produced by D. quadricauda had average sizes 23.9 nm but they were the least stable, aggregated and precipitated from solutions within 3 days. These results confirmed that the size distribution and mean diameter of the nanoparticles, crucial for various applications, can be controlled by the organism selection.

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Synthesis of worm like silver nanoparticles in methyl cellulose polymeric matrix and its catalytic activity

Cited by 56 publications

References 50 publications

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

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

Totally Ecofriendly Synthesis of Silver Nanoparticles from Aqueous Dissolutions of Polysaccharides

Control over the Biological Synthesis of Ag Nanoparticles by Selection of the Specific Algal Species

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