Results 11 to 20 of about 499,894 (252)

Silica Aerogels in Nano Drug Delivery Systems: A Comprehensive Review from Preparation to Medical Applications [PDF]

open access: yesGels
Silica aerogel has garnered significant attention in the biomedical field, primarily due to its unique combination of a three-dimensional structure, low density, tunable nanoscale pores, and an extensive surface area. These intrinsic properties render it
Xinran Qian   +9 more
doaj   +2 more sources

Silica aerogels with tailored chemical functionality

open access: yesMaterials & Design, 2020
Silica aerogels are highly porous (~95%), predominantly mesoporous (20–50 nm) materials with very high surface area (~800 m2/g), but applications that valorize the chemical properties linked to the high surface area lag behind those that valorize the ...
Zhi Li   +3 more
doaj   +2 more sources

The Synthesis and Spectroscopic Characterization of Structural Changes in Hydrophobic Silica Aerogels upon Encapsulation of the LCC ICCG Enzyme [PDF]

open access: yesGels
Silica aerogels are highly porous materials known for their low density and extensive surface area, making them ideal for applications in thermal insulation, catalysis, and environmental remediation.
Tatiana Alpízar-Rojas   +6 more
doaj   +2 more sources

One-Pot Sol–Gel Synthesis of Highly Insulative Hybrid P(AAm-CO-AAc)-Silica Aerogels with Improved Mechanical and Thermal Properties [PDF]

open access: yesGels, 2023
Silica aerogels and their derivatives have outstanding thermal properties with exceptional values in the thermal insulation industry. However, their brittle nature restricts their large-scale commercialization.
Akshay A. Ransing   +11 more
doaj   +2 more sources

Mechanically Reinforced Silica Aerogels via Thermally Induced Phase Separation of Poly(ethylene-co-vinyl Alcohol) [PDF]

open access: yesGels
Silica aerogels are highly attractive due to their outstanding properties, including their low density, ultralow thermal conductivity, large porosity, high optical transparency, and strong sorption activity.
Hainan Ma   +3 more
doaj   +2 more sources

Spherical amine grafted silica aerogels for CO2 capture. [PDF]

open access: yesRSC Adv, 2020
The objective of this research was to develop a novel spherical amine grafted silica aerogel for CO2 capture. A spherical silica gel was synthesized by dropping a sodium silicate based silica sol into an oil bath. Amine grafting was achieved by bonding 3-
Jiang X, Kong Y, Zhao Z, Shen X.
europepmc   +2 more sources

Globally Anisotropic High Porosity Silica Aerogels [PDF]

open access: yesJournal of Non-Crystalline Solids, 2007
We discuss two methods by which high porosity silica aerogels can be engineered to exhibit global anisotropy. First, anisotropy can be introduced with axial strain.
Aoyama   +34 more
core   +2 more sources

The Influence of Reinforced Fibers and Opacifiers on the Effective Thermal Conductivity of Silica Aerogels [PDF]

open access: yesGels
Fiber–particle-reinforced silica aerogels are widely applied in thermal insulation. Knowing their effective thermal conductivity (ETC) and radiative characteristics under high temperatures is necessary to improve their performance.
Binghuan Huang   +4 more
doaj   +2 more sources

Silica-Resorcinol-Formaldehyde Aerogels Nanostructure Modelling

open access: yesChemical Engineering Transactions, 2018
The work is devoted to the study and modelling of the internal nanostructure of silica-resorcinol-formaldehyde aerogels. These aerogels are highly porous (up to 98 %) functional materials with a high specific surface area, low thermal conductivity, and ...
Igor V. Lebedev   +5 more
doaj   +2 more sources

Amine Modification of Silica Aerogels/Xerogels for Removal of Relevant Environmental Pollutants. [PDF]

open access: yesMolecules, 2019
Serious environmental and health problems arise from the everyday release of industrial wastewater effluents. A wide range of pollutants, such as volatile organic compounds, heavy metals or textile dyes, may be efficiently removed by silica materials ...
Lamy-Mendes A   +8 more
europepmc   +2 more sources

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