scholarly journals Size distribution of silica nanoparticles: its impact on green energy

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
M. V. Dutka ◽  
◽  
A. A. Turkin ◽  
D. I. Vainchtein ◽  
S. Gersen ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Size Distribution ◽  
Green Energy

A non-surfactant self-templating strategy for mesoporous silica nanospheres: beyond the Stöber method

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3657-3662 ◽  
Author(s):  
Zhe Chen ◽  
Bo Peng ◽  
Jia-Qiong Xu ◽  
Xue-Chen Xiang ◽  
Dong-Fang Ren ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Size Distribution ◽  
Mesoporous Silica Nanoparticles ◽  
Silica Nanospheres ◽  
Stöber Method ◽  
Directed Synthesis ◽  
The Stöber Method ◽  
Surfactant Templates ◽  
Mesoporous Silica Nanospheres

The “pre-Ouzo” structure directed synthesis of mesoporous silica nanoparticles (MSNs) in the absence of surfactant templates probably also explains the origin of highly monodisperse size distribution of classical Stöber silica NPs.

An Experimental Study on Synthesis and Characterization of Silica Nanoparticles Prepared by Sol-Gel Method

2007 ◽  
Vol 553 ◽  
pp. 245-251
Author(s):  
Ali Shokuhfar ◽  
Tolou Shokuhfar ◽  
M. Ghazinejad ◽  
R. Babazade ◽  
S. Tabatabae
Keyword(s):  
Electron Microscopy ◽  
Silica Nanoparticles ◽  
Size Distribution ◽  
Sol Gel ◽  
Sio2 Nanoparticles ◽  
Industrial Applications ◽  
Silica Particles ◽  
Narrow Size Distribution ◽  
Molar Ratios ◽  
Transmission Electron

Monodispersed nanometer-sized particles proved to be very important and advantageous in many industrial applications. One of the notable groups of these particles is silica (SiO2) nanoparticles which are widely utilized in developing numerous products such as electrical and thermal insulators, humidity sensors, varnish, etc. Since the quality of some of these products depends highly on the purity and size distribution of the silica particles, it is necessary to produce silica nanoparticles of narrow size distribution and very high purity. In this research silica nanoparticles, with a relatively narrow size distribution, have been synthesized via the hydrolysis reaction of tetraethoxisilane (TEOS) in the solution of deionized water and ethanol (C2H5OH), and in the presence of ammonia (NH3) as a catalyst. The nature, morphology and the size of the silica particles has been studied using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray diffraction. Results indicate that the morphology, structure and the diameter of silica particles depend strongly on the molar ratios of the reactants.

Expanding particle size distribution and morphology of aluminium-silicon powders for Laser Beam Melting by dry coating with silica nanoparticles

2019 ◽  
Vol 264 ◽  
pp. 155-171 ◽  
Author(s):  
Michael Cornelius Hermann Karg ◽  
Alexander Munk ◽  
Bhrigu Ahuja ◽  
Manuel Veit Backer ◽  
Jana Petra Schmitt ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Laser Beam ◽  
Silica Nanoparticles ◽  
Size Distribution ◽  
Dry Coating ◽  
Laser Beam Melting

scholarly journals Particle Size Distribution of Bimodal Silica Nanoparticles: A Comparison of Different Measurement Techniques

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3101
Author(s):  
Mohammed A. Al-Khafaji ◽  
Anikó Gaál ◽  
András Wacha ◽  
Attila Bóta ◽  
Zoltán Varga
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Silica Nanoparticles ◽  
Size Distribution ◽  
Single Particle ◽  
Mathematical Problem ◽  
Measurement Techniques ◽  
Characterization Methods ◽  
Resistive Pulse ◽  
Ill Posed

Silica nanoparticles (SNPs) belong to the most widely produced nanomaterials nowadays. Particle size distribution (PSD) is a key property of SNPs that needs to be accurately determined for a successful application. Many single particle and ensemble characterization methods are available for the determination of the PSD of SNPs, each having different advantages and limitations. Since most preparation protocols for SNPs can yield bimodal or heterogeneous PSDs, the capability of a given method to resolve bimodal PSD is of great importance. In this work, four different methods, namely transmission electron microscopy (TEM), dynamic light scattering (DLS), microfluidic resistive pulse sensing (MRPS) and small-angle X-ray scattering (SAXS) were used to characterize three different, inherently bimodal SNP samples. We found that DLS is unsuitable to resolve bimodal PSDs, while MRPS has proven to be an accurate single-particle size and concentration characterization method, although it is limited to sizes above 50 nm. SAXS was found to be the only method which provided statistically significant description of the bimodal PSDs. However, the analysis of SAXS curves becomes an ill-posed inverse mathematical problem for broad size distributions, therefore the use of orthogonal techniques is required for the reliable description of the PSD of SNPs.

Effects of silica nanoparticles on the mean drop size and drop-size distribution in a Scheibel extraction column

2017 ◽  
Vol 12 (3) ◽  
pp. 468-474 ◽  
Author(s):  
Shahrokh Houshyar ◽  
Meisam Torab-Mostaedi ◽  
Seyed Hamed Mousavi ◽  
Seyed Mohammad Ali Moosavian
Keyword(s):  
Silica Nanoparticles ◽  
Size Distribution ◽  
Drop Size ◽  
Drop Size Distribution ◽  
Extraction Column ◽  
The Mean
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