Biological Synthesis of Size-Controlled Cadmium Sulfide Nanoparticles Using ImmobilizedRhodobacter sphaeroides

Bai, Haotian; Zhang, Zhaoming; Guo, Yanzhi; Jia, Wenping

doi:10.1007/s11671-009-9303-0

Cited by 87 publications

(45 citation statements)

References 19 publications

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“…The positive sample was treated with distilled water, which replaced urea and SDS. The supernatant was concentrated in a Millipore Centricon centrifugal filter unit, and then analyzed by SDS-PAGE to determine presence of proteins (Bai et al 2009a). …”

Section: Protein Characterization By Sds-polyacrylamide Gel Electrophmentioning

confidence: 99%

“…It has been found that R. sphaeroides have promising antioxidant and anticancer properties and prolong longevity . We have successfully utilized the photosynthetic bacteria Rhodopseudomonas palustris and Rhodobacter sphaeroides for synthesizing ZnS, PbS, and CdS nanoparticles (Bai and Zhang 2009;Bai et al 2006Bai et al , 2009a. He et al (2007He et al ( , 2008 synthesized gold nanoparticles and nanowires using extracts of Rhodopseudomonas capsulate.…”

Section: Introductionmentioning

confidence: 99%

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Green synthesis of silver nanoparticles using Rhodobacter Sphaeroides

Bai

Yang

Chai

et al. 2011

World J Microbiol Biotechnol

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The use of microorganisms in the synthesis of nanoparticles emerges as an eco-friendly and exciting approach. In this study, silver nanoparticles were successfully synthesized from AgNO 3 by reduction of aqueous Ag ? ions with the cell filtrate of Rhodobacter sphaeroides. Nanoparticles were characterized by means of UV-vis absorption spectroscopy, X-Ray Diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Crystalline nature of the nanoparticles in the fcc structure are confirmed by the peaks in the XRD pattern corresponding to (111), (200), (220) and (311) planes, bright circular spots in the selected are a electron diffraction (SAED) and clear lattice fringes in the high-resolution TEM image. Also, the size of silver nanoparticles was controlled by the specific activity of nitrate reductase in the cell filtrate.

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Section: Protein Characterization By Sds-polyacrylamide Gel Electrophmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Rhodobacter Sphaeroides

Bai

Yang

Chai

et al. 2011

World J Microbiol Biotechnol

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“…However, these methods are challenged by restricted selectivity and large amounts of toxic chemicals involved in the process resulting in secondary pollution . Compared with traditional methods, biological methods have great appeal because of their simplicity, elimination of toxic chemicals (Mishra et al 2014), and capability of controlling nanoparticle size (Bai et al 2009;Sathishkumar et al 2010a). Over the last decade, adsorption and reduction of heavy metals by microorganisms including bacteria, yeast, and fungi have been reported (Farooq et al 2010;Lo et al 2014;Tan et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Biofabrication of gold nanoparticles by Shewanella species

2017

Bioresour. Bioprocess.

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Background: Shewanella oneidensis MR-1 (MR-1) and Shewanella xiamenensis BC01 (SXM) are facultative anaerobic bacteria that exhibit outstanding performance in the dissimilatory reduction of metal ions. Shewanella species have been reported to produce metal nanoparticles, but the mechanism and optimization are still not extensively studied and clearly understood. Herein, the effects of pH, biomass, gold ion concentration, and photoinduction are evaluated to optimize gold nanoparticle (Au@NP) production by Shewanella. Results:The highest amount of Au@NPs produced by SXM and MR-1 were 108 and 62 ppm, respectively, at pH 5 when 2.4 g/L biomass was immersed in 300 ppm gold ions and 50 mM lactate under a light intensity of 100 µmol/ m 2 /s. By scanning election microscopy and zeta potential analysis, the proposed mechanism of Au@NP formation was that Shewanella used lactate as electron donors for the Mtr pathway, stimulated by photosensitive proteins resulting in the nucleation of NPs on the cell membrane. Besides, the resting cells retained the ability for biofabrication of nanoparticles for nearly 25 days. Conclusions:The optimal conditions evaluated for Au@NPs production by Shewanella were biomass, pH, ions concentration, and photoinduction. To the best of our knowledge, this is the first attempt to explore a two-step mechanism for Au@NPs formation in Shewanella. First, the HAuCl 4 solution reacted with sodium lactate to form metallic gold ions. Second, the metallic gold ions were adsorbed onto the outer membrane of cell, and the formation of Au@NPs at the surface was triggered. Shewanella-based Au@NPs production could be a potential ecofriendly solution for the recovery of Au ions from secondary resources like industrial waste.

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“…However, relatively fewer works are reported on the green synthesis of metal sulphide semiconductor nanoparticles [15][16][17]. Green syntheses of ZnS nanoparticles have been reported by using microbes (Rhodobacter sphaeroides) [18].…”

Section: Introductionmentioning

confidence: 99%

Structural, spectral and electrical properties of green synthesized ZnS nanoparticles using Elaeocarpus floribundus leaf extract

Senapati¹,

Sarkar

2015

J Mater Sci: Mater Electron

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The present study reports an environment friendly method for the synthesis of zinc sulphide (ZnS) nanoparticles using an aqueous extract of Elaeocarpus floribundus (Indian olive) leaf that acts as a capping as well as a stabilizing agent. X-ray diffraction and selected area electron diffraction studies confirm cubic structure of the nanoparticles. Transmission electron microscopy shows spherical in shape of the particles with diameter ranging from 8 to 3 nm. Static and high frequency optical dielectric constants are determined for all the samples. The optical band gap calculated from Tauc's plot is found to increase from 3.8 to 4.1 eV. The refractive index of the samples is calculated using Moss and Herve-Vandamme models. The room temperature photoluminescence spectra of the samples show a broad peak centred at 440 nm. The biomolecules involve in the formation of ZnS nanoparticles are studied by Fourier transform infrared spectroscopy analysis. The possible growth mechanism of the synthesized ZnS nanoparticles is also discussed. Current-voltage characteristics under illumination exhibit anomalous behaviour, it shows peak through sudden rise and fall of current with increase of voltage.

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Biological Synthesis of Size-Controlled Cadmium Sulfide Nanoparticles Using ImmobilizedRhodobacter sphaeroides

Cited by 87 publications

References 19 publications

Green synthesis of silver nanoparticles using Rhodobacter Sphaeroides

Green synthesis of silver nanoparticles using Rhodobacter Sphaeroides

Biofabrication of gold nanoparticles by Shewanella species

Structural, spectral and electrical properties of green synthesized ZnS nanoparticles using Elaeocarpus floribundus leaf extract

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