Extracellular biosynthesis of functionalized silver nanoparticles by strains of Cladosporium cladosporioides fungus

Balaji, D. S.; Basavaraja, S.; Deshpande, Raghunandan; Mahesh, D. Bedre; Prabhakar, B.; Venkataraman, A.

doi:10.1016/j.colsurfb.2008.09.022

Cited by 567 publications

(233 citation statements)

References 18 publications

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“…In our opinion, efforts should be focused on the preparation of well-dispersed silver nanoparticles and their incorporation into the skeleton of oxide cathode material such as BSCF. To synthesize the silver nanoparticles, a physical [48], biochemical [49], or chemical method (e.g., synthesis in aqueous solution [50]) can be applied. Furthermore, an alternative method for the preparation of silver sol might be the reduction of silver nitrate with absolute ethanol in the presence of a polymer [51].…”

Section: Introductionmentioning

confidence: 99%

Composite cathode materials Ag-Ba0.5Sr0.5Co0.8Fe0.2O3 for solid oxide fuel cells

Mosiałek

Dudek

Michna

et al. 2014

J Solid State Electrochem

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Silver-Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-δ (BSCF) cathodes were prepared in two ways. In the first method, Ag-BSCF composite powder was prepared in ethanol solution, where Ag nanoparticles serving as a component in the preparation of Ag-BSCF composite cathodes had been previously obtained via one-step synthesis in absolute ethanol using a neutral polymer (polyvinylpyrrolidone). To the best of our knowledge, this is the first study to use a Ag sol obtained by the above method for preparation of Ag-BSCF composite powder. Then, a paste containing this powder was screen-printed on a Sm 0.2 Ce 0.8 O 1.9 electrolyte and sintered at 1,000°C. In the second technique, an aqueous solution of AgNO 3 was added to a previously sintered BSCF cathode, which was then sintered again at 800°C. The oxygen reduction reaction at the quasi-point BSCF cathode on the Sm 0.2 Ce 0.8 O 1.9 electrolyte was tested by electrochemical impedance spectroscopy at different oxygen concentrations in three electrode setup. The continuous decrease of polarization resistance was observed under polarization −0.5 V at 600°C. The comparative studies of both obtained composite Ag-BSCF materials were performed in hydrogen-oxygen IT-SOFC involving samariadoped ceria as an electrolyte and Ni-Gd 0.2 Ce 0.8 O 1.9 anode. In both cases, the addition of silver to the cathode caused an increase in current and power density compared with an IT-SOFC built with the same components but involving a monophase BSFC cathode material.

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Section: Introductionmentioning

confidence: 99%

Composite cathode materials Ag-Ba0.5Sr0.5Co0.8Fe0.2O3 for solid oxide fuel cells

Mosiałek

Dudek

Michna

et al. 2014

J Solid State Electrochem

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“…Silver nanoparticles were found to be quite stable in the fungus supernatant [24]. Silver nanoparticle exhibits strong absorption in the visible region.…”

Section: Resultsmentioning

confidence: 98%

Silver Nanoparticles Biosynthesis by Fusarium oxysporum and Determination of Its Antimicrobial Potency

Khan¹,

Jameel²,

Jameel³

2017

J Nanomedine Biotherapeutic Discov

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“…The detected size of AgNPs synthesized by S. chartarum may agree or differ with previous scientific papers, this may be due to the species type, incubation period or environmental conditions of microbial growth. Size of AgNPs was 5-25, 10-100, 5-40, 200 and 500 nm produced by Aspergillus fumigates (Bhainsa and D'Souza, 2006), Cladosporium cladosporioides (Balaji et al, 2009), Trichoderma viride (Fayaz et al, 2010), Geobacter sulfurreducens (Law et al, 2008) and Lactobacillus Strains (Nair and Pradeep, 2002) respectively. Also, from the extracellular secretion of Schizophyllum commune, Lentinus sajar-caju and Pycnoporus sanguineus, it is observed that nanoparticles size was 42.12, 89.76 and 120.6 nm respectively (Yen San and Mashitah, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…AgNPs are undoubtedly the most widely used nanomaterials among all. Previous studies reported the biosynthesis of AgNPs by different microorganisms such as Fusarium oxysporum , Aspergillus fumigatus (Bhainsa and D'Souza, 2006), Cladosporium cladosporioides (Balaji et al, 2009), Penicillium sp. (Hemath et al, 2010), Trichoderma harzianum (Prashant and Raja, 2011), Schizophyllum commune (Yen San and Mashitah, 2012) and Penicillium citrinum (Honary et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Stachybotrys chartarum: A Novel Biological Agent for The Extracellular Synthesis of Silver Nanoparticles and Their Antimicrobial Activity

Mohamed¹

2015

IJBiotech

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Microbial assisted biosynthesis of nanoparticles is a rapidly progressing area of nanobiotechnology. In this paper Stachybotrys chartarum assisted extracellular synthesis of silver nanoparticles (AgNPs) is reported when challenged with 1mM silver nitrate (AgNO 3 ). The characterization of AgNPs was carried out visual observation and UV-Vis spectrophotometry. Further analysis carried out by Fourier Transform Infrared Spectroscopy (FTIR), provides evidence for the presence of proteins as capping agent, which helps in increasing the stability of the synthesized AgNPs. Transmission Electron Microscopy (TEM) investigations confi rmed that AgNPs were formed. The synthesized silver nanoparticles were found in the range of 65-108 nm. Finally, the antimicrobial susceptibility of AgNPs synthesized was investigated which exhibited more potent activity against bacteria than fungi compared with using silver nitrate at concentration 1mM.

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Extracellular biosynthesis of functionalized silver nanoparticles by strains of Cladosporium cladosporioides fungus

Cited by 567 publications

References 18 publications

Composite cathode materials Ag-Ba0.5Sr0.5Co0.8Fe0.2O3 for solid oxide fuel cells

Composite cathode materials Ag-Ba0.5Sr0.5Co0.8Fe0.2O3 for solid oxide fuel cells

Silver Nanoparticles Biosynthesis by Fusarium oxysporum and Determination of Its Antimicrobial Potency

Stachybotrys chartarum: A Novel Biological Agent for The Extracellular Synthesis of Silver Nanoparticles and Their Antimicrobial Activity

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