Preparation of nanometer-size selenium powders of uniform particle size by γ-irradiation

Zhu, Yingjie; Qian, Yitai; Huang, Hai; Zhang, Manwei

doi:10.1016/0167-577x(96)00046-8

Cited by 57 publications

(20 citation statements)

References 8 publications

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“…The reduction of selenium precursors to form Se spheres has also been achieved by -irradiation [19]. However, few of these methods are able to prepare Se colloid spheres with satisfactory sizes and size distribution.…”

Section: Nano Researchmentioning

confidence: 99%

Preparation of monodisperse Se colloid spheres and Se nanowires using Na2SeSO3 as precursor

Liu

Peng

2008

Nano Res.

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Nearly monodisperse spherical amorphous Se colloids are prepared by the dismutation of Na 2 SeSO 3 solution at room temperature; by altering the pH of the solution, amorphous Se colloid spheres with sizes of about 120 nm, 200 nm, 300 nm, and 1 μm can be obtained. Se@Ag 2 Se core/shell spheres are successfully synthesized by using the obtained amorphous Se (a-Se) spheres as templates, indicating the potential applications of these Se nanomaterials in serving as soft templates for other selenides. Meanwhile, selenium nanowires are obtained through a "solid-solution-solid" growth process by dispersing the prepared Se spheres in ethanol. This simple and environmentally benign approach may offer more opportunities in the synthesis and applications of nanocrystal materials.

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Section: Nano Researchmentioning

confidence: 99%

Preparation of monodisperse Se colloid spheres and Se nanowires using Na2SeSO3 as precursor

Liu

Peng

2008

Nano Res.

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“…Johnson et al 4 synthesized amorphous and monoclinic selenium in a reverse micelle microemulsion. Trigonal selenium (t-Se) nanoparticles have been produced by colloidal precipitation, capping, 8 physical adsorption through vapor phase diffusion, 9 precipitation and subsequent evaporation of the solvent, 2 rf-co-sputtering, 10 confinement in zeolite pores or cancrinite nanochannels, 11 g-radiation of solution, 12 and crystallization of melt-quenched amorphous selenium. 13 Recently, studies on one-dimensional (1-D) nanostructuresnanowires, nanorods or nanotubes -have received increasing attention due to their potential use as active components or interconnects in fabricating nanoscale electronic, optical, optoelectronic, electrochemical, and electromechanical devices.…”

mentioning

confidence: 99%

Rapid, high yield, solution-mediated transformation of polycrystalline selenium powder into single-crystal nanowiresElectronic supplementary information (ESI) available: histogram of diameter distribution of as-prepared single-crystalline trigonal selenium nanowires. See http://www.rsc.org/suppdata/cc/b3/b303755j/

Cheng

Samulski

2003

Chem. Commun.

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“…These include: (a) exposing selenious acid to gamma-radiation (Zhu et al 1996), (b) reducing selenious acid by various reagents such as hydrazine (N 2 H 4 ) (Dimitrijevic and Kamat 1988), (c) oxidizing selenide ions electrochemically (Franklin et al 1990), (d) crystallizing meltquenched amorphous selenium (Zhang et al 1995), (e) using a reverse micelle method (Johnson et al 1999) or (f) using laser ablation (Jiang et al 2003). However, these techniques have limitations.…”

Section: Introductionmentioning

confidence: 99%

Role of proteins in controlling selenium nanoparticle size

2011

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This work investigates the potential for harnessing the association of bacterial proteins to biogenic selenium nanoparticles (SeNPs) to control the size distribution and the morphology of the resultant SeNPs. We conducted a proteomic study and compared proteins associated with biogenic SeNPs produced by E. coli to chemically synthesized SeNPs as well as magnetite nanoparticles. We identified four proteins (AdhP, Idh, OmpC, AceA) that bound specifically to SeNPs and observed a narrower size distribution as well as more spherical morphology when the particles were synthesized chemically in the presence of proteins. A more detailed study of AdhP (alcohol dehydrogenase propanol-preferring) confirmed the strong affinity of this protein for the SeNP surface and revealed that this protein controlled the size distribution of the SeNPs and yielded a narrow size distribution with a three-fold decrease in the median size. These results support the assertion that protein may become an important tool in the industrial-scale synthesis of SeNPs of uniform size and properties.

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Preparation of nanometer-size selenium powders of uniform particle size by γ-irradiation

Cited by 57 publications

References 8 publications

Preparation of monodisperse Se colloid spheres and Se nanowires using Na2SeSO3 as precursor

Preparation of monodisperse Se colloid spheres and Se nanowires using Na2SeSO3 as precursor

Role of proteins in controlling selenium nanoparticle size

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