Silica sand, the primary ore source of silicon, is abundant and easy to process. Silica minerals are referred by quartzite, tridymite, metamorphic rock, cristobalite and minerals such as polymorphs of silica. ... Silica nanoparticles are not only used in the biomedical field but also used in various fields such as material packing, textile ...
Open access. Published: 31 October 2023. Nano-silica from white silica sand functionalized with PANI-SDS (SiO 2 /PANI-SDS) as an adsorbent for the elimination of …
As part of ongoing risk assessments of ZnO nanoparticles (nZnO) in the natural environment, transport behaviors of nZnO in soil need investigation. This work comparatively studied the transport and retention behavior of nZnO in silica sand versus soil, where the effect of input concentration (C₀=34~430 mgL (-1)) and ionic strength …
Silica (SiO 2 ), a component of the earth's crust, has been in use for many nanotechnological applications. This review presents one of the newest methods for …
The biocompatibility of silica nanoparticles presents themselves as a critical asset for their use in biomedicine as nanocarriers in drug delivery and bioimaging. …
Silica consists of one silicon atom and two oxygen atoms (SiO 2) and is commonly used in various aspects of daily life. For example, it has been used as glass, insulator, and so on. Nowadays, silica is used as core reagents for fabricating and encapsulating nanoparticles (NPs). In this chapter, the usage of silica in …
Silica nanoparticles have rapidly found applications in medicine, supercapacitors, batteries, optical fibers and concrete materials, because silica nanoparticles have tunable physical, chemical, optical and mechanical properties. In most applications, high-purity silica comes from synthetic organic precursors, yet this …
The silica sand nanoparticles with average particle size of less than 100nm was produced by several stages of ball mill and heating combinations. HDPE matrix composites with 5, 10, 15 and 20 wt.% of silica sand nanoparticles were developed through internal mixing of silica sand nanoparticles with HDPE and then using compression moulding machine.
The agricultural use of silica (SiO2) nanoparticles (NPs) has the potential to control insect pests while the safety and tritrophic effects on plants and beneficial natural enemies remains unknown.
Experiments are designed using Taguchi method to find the optimum parameters for silica sand nanoparticles production using low speed ball milling. Orthogonal array and signal-to-noise ratio are ...
Silica nanoparticles (SNPs) have shown great applicability potential in a number of fields like chemical, biomedical, biotechnology, agriculture, environmental remediation and even wastewater purification. With remarkably instinctive properties like mesoporous structure, high surface area, tunable pore size/diameter, biocompatibility, …
Abstract. The production of amorphous mesoporous silica nanoparticles can be achieved using sodium silicate (Na 2 SiO 3) solutions prepared from South African coal fly ash waste.The first part of this study compared two processes for the preparation of Na 2 SiO 3 solutions. The first process, hereafter called sequential acid-alkaline leaching …
transport distances, such as enhanced oil recovery. This study investigates silica nanoparticle transport and adsorption in long. granular columns, with emphasis on the adsorption onto carbonate ...
This study will focus on industrial-scale silica nanoparticle production and the application of nanosilica as a plant stimulant in maize. A variant of the sol−gel method is used to successfully synthesize nanosilica particles starting from silica sand. The resulting particles are in the size range of 16−37 nm with great purity.
In this paper, the silica nanoparticles were prepared from the raw silica sand and then incorporated into a modified polyaniline with sodium dodecyl sulfate surfactant (SDS) to form a novel SiO 2 ...
Plate assay method for the detection of the Inhibitory effect of nanoparticles under test against E.coli BL2. a: activated carbon, b: AC-Aga, c: AC-Ag b, d: AC-Ag c and e: silica sand.
Silica nanoparticles (Si-NPs) are widely explored in biomedical applications due to their high surface area, excellent biocompatibility, and tunable pore size. The …
Man-made silica is typically amorphous and manufactured in tonnage quantities for commercial use and, more recently, for burgeoning medical applications, …
To address these limitations, we propose an approach to 3D print silica nanostructures with sub-200 nm resolution. Additionally, the 3D-printed inorganic nanostructures were doped with desired ...
Application of silica nanoparticles as fillers in the preparation of nanocomposite of polymers has drawn much attention, due to the increased demand for new materials with improved thermal, mechanical, physical, and chemical properties. Recent developments in the synthesis of monodispersed, narrow-size distribution of …
Nanotechnology can contribute significantly to the aquaculture sector for a wide range of applications. In this study, silica nanoparticles were prepared from beach sand and characterized. The XRD pattern was obtained and confirms the crystalline nature of potassium aluminium silicate [K(AlSi3O8)], sodium silicate (Na2Si2O5), and silicon …
Silica nanoparticles (SiNPs) and porous SiNPs have shown wide range of applications in various technological fields ranging from nanocomposites and ceramics to diagnosis tools and drug delivery [].Stöber et al. synthesized silica nanoparticles in 1962 by using tetraethyl orthosilicate (TEOS) as the silica precursor, ethyl alcohol and water …
In this study, we used silica sand as a source of sodium silicate solution (eq. 1) and controlled the formation of silica nanoparticles with HNO 3 using the sol–gel …
The treatment of sand with hydrophobic silica nanoparticles capped with wax, prepared by method 3, however, more efficiently modifies the hydrophobicity of sand to convert it to superhydrophobic sand, even when mixed with the untreated sand at ratios of 1:10 wt. %. Shifting surfaces and wetting of sand by constructing roughness structures and ...
Nanosilica was also produced from silica sand with average particle sizes of 80 nm and 170 nm. Three different processing techniques─sol–gel, sonication, and spray pyrolysis─were used to create silica nanoparticles from natural quartz sand, yielding a mesoporous material with an average size of 10–26 nm.
Highlights We studied the Raman and IR spectra of different commercial silica nanoparticles. The nanoparticles had different sizes (diameters from 40 to 7 nm). Applying a shell-model we suggest that the core matrix is close some bulk materials. In the surface shell (thickness of about 1 nm), the structure is strongly modified. The Si–O–Si …
As part of ongoing risk assessments of ZnO nanoparticles (nZnO) in the natural environment, transport behaviors of nZnO in soil need investigation.This work comparatively studied the transport and retention behavior of nZnO in silica sand versus soil, where the effect of input concentration (C 0 = 34 ~ 430 mg L- 1) and ionic strength …
The green synthesis of silica nanoparticles is an important area of research having considerable potential for further future developments. In this mini …
Key steps and reagents used to hydrolytically degrade SiO 2 nanoparticles under basic conditions using potassium hydroxide, and detect dissolved Si and Si(OH) 4, respectively, under acidic ...
