Results 21 to 30 of about 9,810 (226)

Nanocellulose Xerogels With High Porosities and Large Specific Surface Areas

open access: yesFrontiers in Chemistry, 2019
Xerogels are defined as porous structures that are obtained by evaporative drying of wet gels. One challenge is producing xerogels with high porosity and large specific surface areas, which are structurally comparable to supercritical-dried aerogels ...
Shunsuke Yamasaki   +7 more
doaj   +1 more source

Construction of Pt@BiFeO3 Xerogel-Supported O-g-C3N4 Heterojunction System for Enhanced Visible-Light Activity towards Photocatalytic Degradation of Rhodamine B

open access: yesGels, 2023
Synthetic organic pigments from the direct discharge of textile effluents are considered as colossal global concern and attract the attention of scholars.
Abubakar Usman Katsina   +5 more
doaj   +1 more source

Investigation of silica - PVA xerogel microstructure evolution during thermal treatment by SANS experiment [PDF]

open access: yes, 2004
The purpose of the study was to investigate the appearance of certain microstructures developing in the SiO2/PVA nanocomposite xerogels at different temperatures by small-angle neutron scattering (SANS). The samples were prepared by the alcoxide route of
Almásy, László   +3 more
core   +1 more source

The Methyl Functionality of Monolithic Silica Xerogels Synthesized via the Co-Gelation Approach Combined with Surface Silylation

open access: yesGels, 2022
The present research aims to investigate the chemical and morphological properties of the methylated silica xerogels produced via the co-gelation approach combined with surface silylation.
Selay Sert Çok   +3 more
doaj   +1 more source

Catalytic coatings on steel for low-temperature propane prereforming to solid oxide fuel cell (SOFC) application [PDF]

open access: yes, 2009
Catalyst layers (4–20 lm) of rhodium (1 wt%) supported on alumina, titania, and ceria–zirconia (Ce0.5Zr0.5O2) were coated on stainless-steel corrugated sheets by dip-coating in very stable colloidal dispersions of nanoparticles in water.
Alphonse, Pierre, Ansart, Florence
core   +2 more sources

A Dual Stimuli Responsive Supramolecular Gel Provides Insulin Hydrolysis Protection and Redox-Controlled Release of Actives [PDF]

open access: yes, 2020
Two supramolecular hydrogelators containing a central disulfide moiety and terminal carboxylic acid groups are studied. On the one hand, the hydrogels are responsive to a reductive environment, which transforms the disulfide unit to the corresponding ...
Angulo-Pachón, César A.   +4 more
core   +1 more source

Metallic Strontium as a Precursor of the Al2O3/SrCO3 Xerogels Obtained by the One-Pot Sol–Gel Method

open access: yesGels, 2022
Two series of binary xerogel systems of Sr/Al with molar ratios of 0.1, 0.25, 0.5, and 1.0 were synthesized by the sol–gel technique with metallic strontium component as a precursor.
Eliza Romanczuk-Ruszuk   +3 more
doaj   +1 more source

Podoplanin immunopositive lymphatic vessels at the implant interface in a rat model of osteoporotic fractures [PDF]

open access: yes, 2013
Insertion of bone substitution materials accelerates healing of osteoporotic fractures. Biodegradable materials are preferred for application in osteoporotic patients to avoid a second surgery for implant replacement. Degraded implant fragments are often
Alt, Volker   +16 more
core   +2 more sources

Hydrophobization of Monolithic Resorcinol-Formaldehyde Xerogels by Means of Silylation

open access: yesGels, 2022
In materials research, the control of wettability is important for many applications. Since they are typically based on phenolics, organic aerogels, and xerogels are intrinsically hydrophilic in nature, and examples of the chemical functionalization of ...
Fabian Henn, René Tannert
doaj   +1 more source

Carbon Gels–Green Graphene Composites as Metal-Free Bifunctional Electro-Fenton Catalysts

open access: yesGels, 2023
The Electro-Fenton (EF) process has emerged as a promising technology for pollutant removal. However, the EF process requires the use of two catalysts: one acting as an electrocatalyst for the reduction of oxygen to H2O2 and another Fenton-type catalyst ...
Lilian D. Ramírez-Valencia   +4 more
doaj   +1 more source

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