Results 21 to 30 of about 2,729 (185)

Xerogel-Sequestered Silanated Organochalcogenide Catalysts for Bromination with Hydrogen Peroxide and Sodium Bromide

Molecules, 2015
While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates.
Caitlyn M. Gatley, Lisa M. Muller, Meredith A. Lang, Eduardo E. Alberto, Michael R. Detty   +4 more
doaj   +1 more source

Synthesis and Characterization of Trimethylchlorosilane-Modified Silica Xerogel

Jurnal Kimia Sains dan Aplikasi, 2020
Modification of silica xerogel with TMCS (trimethylchlorosilane) reagent has been carried out to improve the hydrophobicity of silica xerogel. Silica xerogel was synthesized based on the sol-gel method using sodium silicate as a precursor, and citric ...
Sellen Tanheitafino, Anis Shofiyani, Risya Sasri, Rudiyansyah Rudiyansyah   +3 more
doaj   +1 more source

Surface and porosity of nanocrystalline boehmite xerogels [PDF]

Journal of Colloid and Interface Science, 2005
Boehmite xerogels are prepared by hydrolysis of Al(OC4H9)3 followed by peptization with HNO3 (H+/Al = 0, 0.07, 0.2). XRD and TEM show that these gels are made of nanosized crystals (5-9 nm in width and 3 nm thick). According to the amount of acid, no significant differences are found in size and shape, but only in the spatial arrangement of the ...
Alphonse, Pierre, Courty, Matthieu
openaire   +4 more sources

Comparative characteristics of the well-healing xerogel effect based on the neutral hydrozol of titanium dioxide for burner therapy

Исследования и практика в медицине, 2021
Purpose of the study. In order to create the basis for prospective wound coatings the wound healing effect of xerogel based on neutral hydrosol of titanium dioxide was studied. Materials and methods.
I. P. Dudanov, V. V. Vinogradov, V. V. Сhrishtop, V. G. Nikonorova   +3 more
doaj   +1 more source

Environmental Remediation with Functional Aerogels and Xerogels [PDF]

Global Challenges, 2020
AbstractSeveral different types of aerogels and xerogels are demonstrated as effective sorbents for the capture and/or immobilization of radionuclides and other contaminants in gaseous form [e.g., Hg(g), I2(g), Xe, Kr] as well as ionic form (e.g., Cd2+, Ce4+, Cs+, Cu2+, Fe2+, Hg2+, I−, IO3−, Kr, Pb2+, Rb+, Sr2+, 99Tc7+, U6+, Zn2+).
Brian J. Riley, Saehwa Chong
openaire   +3 more sources

Features of Fabrication of Titanium Dioxide Based Coatings for Non-Lithographic Template Electrochemical Synthesis of Micron Metal Particle Arrays

Gels, 2021
This work is devoted to the development of non-lithographic template methods of synthesis. These methods have a significant advantage in terms of structure formation: there is no need to design and produce masks, which greatly simplifies the process, and
Andrey Yu. Arbenin, Elena G. Zemtsova, Evgeniy V. Orekhov, Daria N. Sokolova, Polina I. Baburova, Alexey A. Petrov, Vladimir E. Gaǐshun, Vladimir M. Smirnov   +7 more
doaj   +1 more source

Sol–gel synthesis of highly TiO2 aerogel photocatalyst via high temperature supercritical drying

Journal of Saudi Chemical Society, 2017
Nanocrystalline powders of TiO2 xerogel and aerogel were prepared by using acid-modified sol–gel approach. For TiO2 aerogel material (TA), the solvent was high temperature supercritically extracted at 300 °C and 100 bars.
Rebah Moussaoui, Kais Elghniji, Mongi ben Mosbah, Elimame Elaloui, Younes Moussaoui   +4 more
doaj   +1 more source

Bifunctional Single-Atom Cobalt Electrocatalysts with Dense Active Sites Prepared via a Silica Xerogel Strategy for Rechargeable Zinc–Air Batteries

Nanomaterials, 2022
The N-doped cobalt-based (Co) bifunctional single atom catalyst (SAC) has emerged as one of the most promising candidates to substitute noble metal-based catalysts for highly efficient bifunctionality.
Lijuan Wang, Zixiang Xu, Tingyu Peng, Maosong Liu, Long Zhang, Jianming Zhang   +5 more
doaj   +1 more source

Synthesis of V₂O₅/Single-Walled Carbon Nanotubes Integrated into Nanostructured Composites as Cathode Materials in High Performance Lithium-Ion Batteries

Energies, 2022
Vanadium pentoxide (V2O5)-anchored single-walled carbon nanotube (SWCNT) composites have been developed through a simple sol–gel process, followed by hydrothermal treatment.
Nojan Aliahmad, Pias Kumar Biswas, Hamid Dalir, Mangilal Agarwal   +3 more
doaj   +1 more source

Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers

Gels, 2023
Four leather substrates from different animals were treated by dispersions containing hydrophilic composite silica-hyperbranched poly(ethylene imine) xerogels. Antimicrobial activity was introduced by incorporating silver nanoparticles and /or benzalkonium chloride.
Michael Arkas, Theofanis Bompotis, Konstantinos Giannakopoulos, Evangelos P. Favvas, Marina Arvanitopoulou, Konstantinos Arvanitopoulos, Labros Arvanitopoulos, Georgia Kythreoti, Michail Vardavoulias, Dimitrios A. Giannakoudakis, Laura Castellsagués, Sara Maria Soto González   +11 more
openaire   +3 more sources