Properties of Silicon Dioxide Amorphous Nanopowder Produced by Pulsed Electron Beam Evaporation

Il’ves, Vladislav G.; Зуев, М. Г.; Sokovnin, S. Yu.

doi:10.1155/2015/417817

Cited by 18 publications

(8 citation statements)

References 41 publications

(47 reference statements)

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“…The strong broad hump, between 20°and 25°attributed to the presence of amorphous silica phase in the sample, additionally, some crystalline structures also have been observed. Similar observations have been reported in previous research works [26].…”

Section: Resultssupporting

confidence: 93%

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

Varghese¹,

Anitha²,

Henry³

et al. 2018

Micro & Nano Letters

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This work demonstrates the fabrication of a composite nanomaterial consisting of spherical silica nanoparticles decorated onto the graphene sheets which has been prepared by the sonication-assisted method. Graphene/silica nanocomposites were fabricated by the hydrolysis of tetraethyl orthosilicate in the presence of graphene oxide which has been obtained by modified Hummer's method. The obtained nanostructures were characterised by the X-ray diffraction (XRD), Raman spectroscopy, Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The XRD analysis depicts the coexistence of silica and graphene in the composite material. The morphology of synthesised silica-graphene nanocomposites was characterised by SEM and TEM. All images have been observed in the presence of SiO 2 nanoparticles of similar sizes which were grafted on the surface of graphene effectively. More significantly, the BET analysis revealed that the silica decorated graphene nanocomposites exhibit enhanced surface area than bare silica and graphene.

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Section: Resultssupporting

confidence: 93%

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

Varghese¹,

Anitha²,

Henry³

et al. 2018

Micro & Nano Letters

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“…1) showed that SiO2-MnO2 NP are presented in the form of agglomerates with interparticle porosity, similar to pure SiO2 NP (Fig. 2) [10]. According to the BET analysis (Table 1), the nonlinear change of properties (pore size and volume) was observed with the increase of the dopant concentration with the presence of the maximum of properties in SiO2-3%MnO2 NP.…”

Section: Managing the Properties Of Np By Dopingmentioning

confidence: 66%

METHODS FOR MANAGING TEXTURAL PROPERTIES OF NANOPOWDERS TO CREATE A DRUG DELIVERY SYSTEM BASED ON SiO ₂ , SiO ₂ -MnO ₂

Zlygosteva¹,

Sokovnin²,

Il’ves³

2020

RAP 2019 Conference Proceedings

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The physical and chemical properties of nanomaterials depend not only on the nature of the substance, but also on the size and shape of the particles, as well as the size and shape of the pores. In this paper, the methods for managing the textural properties of SiO2, SiO2-MnO2 nanopowders, produced by pulsed electron beam evaporation in vacuum, are investigated. The researched methods include doping at the stage of preparation and ultrasonic treatment of aqueous nanopowder suspensions. In addition, the radiation of CaF2 nanopowders by relativistic electrons was considered as a potential method for managing properties.

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“…Recently, a great interest has arisen for such nanocomposites active materials in the nanoscale from consumers and productions for stable environmental products. Silica nanoparticle films are inexpensive, with a small content of chemical impurities, taken into consideration as proper techniques for preservative coatings when compared to the common composite materials [9,10]. Nanocomposite SiO 2 can preserve the freshness of foods and inhibit rancidity, color change, nutrient loss, dehydration, sticking, microbial attack in-vitro, and in-vivo [11].…”

Section: Introductionmentioning

confidence: 99%

Microscopic Image Segmentation and Morphological Characterization of Novel Chitosan/Silica Nanoparticle/Nisin Films Using Antimicrobial Technique for Blueberry Preservation

2021

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In the current work, the characterization of novel chitosan/silica nanoparticle/nisin films with the addition of nisin as an antimicrobial technique for blueberry preservation during storage is investigated. Chitosan/Silica Nanoparticle/N (CH-SN-N) films presented a stable suspension as the surface loads (45.9 mV) and the distribution was considered broad (0.62). The result shows that the pH value was increased gradually with the addition of nisin to 4.12, while the turbidity was the highest at 0.39. The content of the insoluble matter and contact angle were the highest for the Chitosan/Silica Nanoparticle (CH-SN) film at 5.68%. The use of nano-materials in chitosan films decreased the material ductility, reduced the tensile strength and elongation-at-break of the membrane. The coated blueberries with Chitosan/Silica Nanoparticle/N films reported the lowest microbial contamination counts at 2.82 log CFU/g followed by Chitosan/Silica Nanoparticle at 3.73 and 3.58 log CFU/g for the aerobic bacteria, molds, and yeasts population, respectively. It was observed that (CH) film extracted 94 regions with an average size of 449.10, at the same time (CH-SN) film extracted 169 regions with an average size of 130.53. The (CH-SN-N) film presented the best result at 5.19%. It could be observed that the size of the total region of the fruit for the (CH) case was the smallest (1663 pixels), which implied that the fruit lost moisture content. As a conclusion, (CH-SN-N) film is recommended for blueberry preservation to prolong the shelf-life during storage.

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Properties of Silicon Dioxide Amorphous Nanopowder Produced by Pulsed Electron Beam Evaporation

Cited by 18 publications

References 41 publications

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

METHODS FOR MANAGING TEXTURAL PROPERTIES OF NANOPOWDERS TO CREATE A DRUG DELIVERY SYSTEM BASED ON SiO ₂ , SiO ₂ -MnO ₂

Microscopic Image Segmentation and Morphological Characterization of Novel Chitosan/Silica Nanoparticle/Nisin Films Using Antimicrobial Technique for Blueberry Preservation

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Properties of Silicon Dioxide Amorphous Nanopowder Produced by Pulsed Electron Beam Evaporation

Cited by 18 publications

References 41 publications

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

Facile sonication‐assisted synthesis and characterisations of silica decorated graphene nanocomposites

METHODS FOR MANAGING TEXTURAL PROPERTIES OF NANOPOWDERS TO CREATE A DRUG DELIVERY SYSTEM BASED ON SiO 2 , SiO 2 -MnO 2

Microscopic Image Segmentation and Morphological Characterization of Novel Chitosan/Silica Nanoparticle/Nisin Films Using Antimicrobial Technique for Blueberry Preservation

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METHODS FOR MANAGING TEXTURAL PROPERTIES OF NANOPOWDERS TO CREATE A DRUG DELIVERY SYSTEM BASED ON SiO ₂ , SiO ₂ -MnO ₂