Dispersing and stabilizing silicon nanoparticles in a low-epsilon medium

Reindl, A.; Voronov, A.; Gorle, P.K.; Rauscher, Martin; Roosen, Andreas

doi:10.1016/j.colsurfa.2008.01.045

Cited by 16 publications

(12 citation statements)

References 20 publications

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“…The higher viscosity of solvent might prevent aggregation by stabilizing the nanoparticles more efficiently [10]. The SiNPs which were suspended in 1-butanol and 2-propanol had agglomerated due to evaporation of the solvent [4]. However, for SiNPs which were suspended in toluene, it was observed that an agglomeration and a serious oxidation of SiNPs had been produced.…”

Section: Resultsmentioning

confidence: 94%

“…Therefore, it is important to disperse and stabilize SiNPs under inert condition in a solvent [4]. In this study, different solvents (methanol, ethanol, 2-propanol, 1-butanol, acetone, and toluene) were used as dispersion agent to obtain stable suspension and dispersion of SiNPs.…”

Section: Resultsmentioning

confidence: 99%

“…In consideration, this study has focused on the fabrication of stable suspension and well dispersion of SiNPs, which microemulsion route is used to synthesize SiNPs. Besides, several dispersing methods have been developed for silicon nanoparticles such as ultrasound, ultraurrax, and stirred media mill [4]. In order to produce inexpensive, disperse, and stable SiNPs, SiNPs are suspended in various solvents such as methanol, ethanol, 2-propanol, 1-butanol, acetone, and toluene, separately.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, chemical etching, microemulsion, laser ablation, sol-gel technique, sputtering process, ball milling process and hot-wire synthesis have been developed for synthesis of SiNPs. However, SiNPs have posed abundance of challenges which is to obtain stable suspension without agglomeration [4]. Monodisperse nanoparticles with controlled particle sizes are importance because the properties of these nanoparticles (especially optical properties) are strongly dependent on their size [5].…”

Section: Introductionmentioning

confidence: 99%

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Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route

2010

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Silicon nanoparticles are synthesized by microemulsion route. Silicon tetrachloride (SiCl 4 ) is used as a silicon source. Meanwhile, hydrazine (N 2 H 5 OH), sodium hydroxide (NaOH), and polyethylene glycol (PEG) are used as reduction agent, stabilizer, and capping agent, respectively. In this study, the effects of different solvents (methanol, 1-butanol, 2-propanol, ethanol, acetone, and toluene) on the dispersion and the stabilization of silicon nanoparticles are studied intensively. The results in this study show that ethanol solvent has given smaller particle size, better size distribution, stable suspension and well dispersion of silicon nanoparticles. The diameter of synthesized silicon nanoparticles is in the range of 30-100 nm. Moreover, the absorption edge of silicon nanoparticles in ethanol is observed at a shorter wavelength compared to the others solvent.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route

2010

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“…Shape: 2a) Gold nanocubes after a HAuCl 4 solution was added (adapted with permission . Copyright 2008, American Chemical Society), 2b) zink oxide (ZnO) prisms, from R. Klupp Taylor (private correspondence), and 2c) aggregated silicon nanoparticles in toluene (adapted with permission . Copyright 2008, Elsevier).…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Particle Size Distributions and Their Application to Nonspherical Particle Systems in Two Dimensions

Frank

Wawra

Pflug

et al. 2019

Part & Part Syst Charact

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Particle science and technology evolve toward ever increasing complexity with respect to the multidimensional particle properties of size, shape, surface, internal structure, and composition. In this study, the theoretical background is elaborated for multidimensional particle size distributions (PSDs) by transferring the concepts known from 1D size distributions to anisotropic particles comprising at least two different length dimensions, e.g., nanorods and platelets. After introducing 2D PSDs, the calculation of differently weighted probability density functions including their interconversion is presented. This is necessary in order to compare data resulting from different measurement techniques which probe different physical properties and thus provide differently weighted PSDs. In addition, it is shown how 1D distributions with reduced content of information can be deduced from 2D PSDs. As a proof‐of‐concept and for illustration purposes, this approach is applied to a 2D Gaussian size distribution. Furthermore, a generalized scheme is suggested which outlines the conversion of number, surface, and volume weighted densities within the 2D space. The application of these methods to the more general n‐dimensional case is straightforward.

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Confirmation of n‐Hexane as an Inert Co‐Solvent in the Production of Functionalized Silicon Nanoparticles from Reactive High‐Energy Ball Milling

Vanegas,

Reusch,

Fink

et al. 2023

Part & Part Syst Charact

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Alkanes such as n‐hexane have been used as co‐solvents in the production of functionalized semiconductor nanoparticles from alkenes and alkynes using Reactive High Energy Ball Milling (RHEBM) under the assumption that they are non‐reactive under typical milling conditions. In this paper, a comparative study with two hydrocarbon solvents of comparable chain length, 1‐hexyne, and n‐hexane, and their milling products using three different commercially available silicon precursors, namely single crystal silicon wafers and polycrystalline particles having a nominal size of 4 µm and 1 mm, is reported. It is found that nanoparticle formation and surface functionalization in all the three silicon systems occurs only with 1‐hexyne; n‐hexane is non‐reactive and does not lead to appreciable functionalized nanoparticle formation under the conditions studied. Nanoparticles (where formed) and microparticle byproducts of appropriate samples are characterized by Transmission electronic microscope (TEM), Fourier transform infrared (FTIR), Photoluminiscence spectroscopy (PL), Nuclear magnetic resonance 1H/13C NMR, and thermogravimetry TGA to separately confirm nanoparticle formation and surface functionalization.

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Dispersing and stabilizing silicon nanoparticles in a low-epsilon medium

Cited by 16 publications

References 20 publications

Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route

Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route

Multidimensional Particle Size Distributions and Their Application to Nonspherical Particle Systems in Two Dimensions

Confirmation of n‐Hexane as an Inert Co‐Solvent in the Production of Functionalized Silicon Nanoparticles from Reactive High‐Energy Ball Milling

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