Silica Nanoparticles
Silica Nanoparticles - Related Videos
09:43
Preparation of Silica Nanoparticles Through Microwave-assisted Acid-catalysis
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Cited by 11 •
2013
Silica nanoparticles were prepared using acid-catalysis of a siloxane precursor and microwave-assisted synthetic techniques resulting in the controlled growth of nanomaterials ranging from 30-250 nm in diameter. The growth dynamics can be controlled by varying the initial silicic acid concentration, time of the reaction, and temperature of reaction.
10:27
The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight
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Cited by 12 •
2016
Two types of surfaces, polyester-coated steel and polyester coated with a layer of silica nanoparticles, were studied. Both surfaces were exposed to sunlight, which was found to cause substantial changes in the chemistry and nanoscale topography of the surface.
11:06
Encapsulating Cytochrome c in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity
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Cited by 1 •
2016
This procedure describes how to encapsulate cytochrome c (cyt. c) in silica (SiO2) sol-gels, process these gels to form bioaerogels, and use these bioaerogels to rapidly recognize nitric oxide (NO) through a gas-phase reaction. This type of protocol may aid in the future development of biosensors or other bioanalytical devices.
11:02
Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
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2015
Here, we present a protocol with a sol-gel process to synthesize gold intercalated in the walls of mesoporous materials (GMS), which is confirmed to possess a mesoporous matrix with gold intercalated in the walls imparting great stability and recyclability.
09:11
Porosimetry of a Silica Alumina Powder
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Surface area and pore size distribution are attributes used by adsorbent and catalyst manufacturers and users to ensure quality control and to determine when products are at the end of their useful lives. The surface area of a porous solid is directly related to its adsorption capacity or catalytic activity. The pore size distribution of an adsorbent or catalyst is...
FAQs
Controlled hydrolysis and condensation provide the synthesis mechanism for building silica nanoparticles from silicon-containing precursors. By managing these reactions, researchers can influence how particles form and adjust their size, porosity, morphology, and surface chemistry. Those structural choices determine how the particles behave in coatings, composites, catalysts, sensors, and controlled-transport systems.
High surface area gives silica nanoparticles extensive contact with their surrounding material, while tunable surface chemistry influences how that contact occurs. Together, these features affect reactivity, stability, and interactions within an engineered system. Consequently, surface design can help tailor nanoparticles for catalytic activity, sensing, composite reinforcement, or controlled transport rather than treating all particles as functionally identical.
Dispersion determines how evenly silica nanoparticles are distributed through a surrounding material. Poor distribution can change particle interactions and reduce the consistency of the resulting material, whereas controlled dispersion supports more reliable behavior. This consideration is especially important in composite materials and coatings, where nanoparticle interactions with the matrix influence properties such as strength or stability.
Porosity and morphology provide different structural controls over nanoparticle behavior. Porosity changes the internal structure available for interactions or transport, while morphology describes the particle form that participates in contact with surrounding materials. Adjusting either feature can therefore support different engineering goals, including reactivity, controlled transport, stability, or improved performance in composite and coating systems.
A typical development workflow begins by selecting a silicon-containing precursor and using controlled hydrolysis and condensation to form the particles. Researchers then adjust target properties such as size, porosity, morphology, and surface chemistry, followed by characterization to assess whether the particles meet design requirements. Dispersion and interactions with the surrounding material must also be evaluated before application.
Characterization should examine the properties most closely connected to the intended function, including particle size, porosity, morphology, and surface chemistry. Researchers should also assess dispersion and interactions with the surrounding material because these factors strongly influence performance. This information helps determine whether the nanoparticles are suitable for reliable use in coatings, catalysts, sensors, composites, or transport systems.
Silica nanoparticles can support coatings, catalysts, sensors, drug-delivery systems, and composite materials. Depending on their engineered properties, they may contribute to improved strength, stability, reactivity, or controlled transport. The relevant design strategy differs by application: surface chemistry and dispersion may be central in composites and coatings, while porosity and transport behavior may matter more in delivery systems.
In materials engineering, silica nanoparticles connect nanoscale design with macroscopic material performance. Researchers can tune particle structure and surface chemistry, then study how those features interact with a host material or functional system. This approach supports the design of materials with targeted strength, stability, reactivity, sensing behavior, or transport characteristics, while characterization verifies whether the engineered structure produces the intended outcome.