Results 191 to 200 of about 20,641 (267)

Synthesis and evaluation of an alginate-methacrylate xerogel for insulin delivery towards wound healing applications.

Therapeutic delivery, 2021
Background: Alginate is one of the most widely used biopolymer for wound healing. But poor mechanical strength and degradability limits its application especially as a drug-delivery matrix.
G. P. Rajalekshmy, M. Rekha
semanticscholar   +1 more source

Crystallization of TiO2 xerogel

Journal of Thermal Analysis and Calorimetry, 2020
For utilization of TiO2 in advanced applications, TiO2 after thermal treatment has to be in crystalline phase of anatase, because it gives the desired (photocatalytic) properties to material. The work deals with the study of anatase crystallization in TiO2 xerogel (dried at 80 °C) which was prepared from sol in “titanium isopropoxide–isopropyl alcohol ...
Jana Pagáčová, Alfonz Plško, Iveta Papučová, Katarína Faturíková, Anna Prnová, Jana Valuchová, Darina Ondrušová   +6 more
openaire   +1 more source

Gaseous iodine sorbents: A comparison between Ag-loaded aerogel and xerogel scaffolds.

ACS Applied Materials and Interfaces, 2020
Silver-exchanged aluminosilicate aerogels and xerogels were investigated as gaseous iodine [I2(g)] sorbents. The structures, morphologies, compositions, and pore structures of aerogels (as-made and heat-treated at 350°C) and xerogels are compared using ...
Saehwa Chong, B. Riley, Jacob A. Peterson, M. Olszta, Zayne J. Nelson   +4 more
semanticscholar   +1 more source

Superhydrophobic nitric oxide-releasing xerogels

Acta Biomaterialia, 2014
Superhydrophobic nitric oxide (NO)-releasing xerogels were prepared by spray-coating a fluorinated silane/silica composite onto N-diazeniumdiolate NO donor-modified xerogels. The thickness of the superhydrophobic layer was used to extend NO release durations from 59 to 105h.
Wesley L. Storm, Jonghae Youn, Katelyn P. Reighard, Brittany V. Worley, Hetali M. Lodaya, Jae Ho Shin, Mark H. Schoenfisch   +6 more
openaire   +2 more sources

Carbon Aerogels and Xerogels

MRS Proceedings, 1992
ABSTRACTThe aqueous polycondensation of resorcinol with formaldehyde proceeds through a sol-gel transition and results in the formation of highly crosslinked, transparent gels. If the solvent is simply evaporated from the pores of these gels, large capillary forces are exerted and a collapsed structure known as a xerogel is formed. In order to preserve
Richard W. Pekala, Cynthia T. Alviso
openaire   +1 more source

A novel all solid-state asymmetric supercapacitor with superior electrochemical performance in a wide temperature range using a hydroquinone modified graphene xerogel as the cathode and N-doped Ti3C2Tx as the anode

, 2020
To further improve the energy density of supercapacitors, novel asymmetric supercapacitors using electrode materials with a large potential window should be designed.
Qimeng Sun, T. He, Yueming Li
semanticscholar   +1 more source

Optically active doped xerogel

Journal of Non-Crystalline Solids, 1992
Abstract Using the sol-gel process, organic dye molecules have been trapped and individually encaged in a solid xerogel matrix. These doping molecules were aligned by a focussed femtosecond laser pulse, thus creating a local birefringence. The molecule alignment is permanent. An optical memory matrix is thus experimentally achieved.
Canva, Michael, Georges, Patrick, Le Saux, Gilles, Brun, Alain, Chaput, Frédéric, Boilot, Jean-Pierre   +5 more
openaire   +1 more source

Lanthanide-Mediated Cyclodextrin-Based Supramolecular Assembly-Induced Emission Xerogel Films: A Transparent Multicolor Photoluminescent Material

, 2020
Supramolecular xerogel films as multicolor photoluminescent materials are ideal for applications in optical devices, such as photochromic smart windows and LEDs.
Hong Yao, Xiaotong Kan, Qi Zhou, Y. Niu, You‐Ming Zhang, T. Wei, Qi Lin   +6 more
semanticscholar   +1 more source

Structure of Hybrid Colloid−Polymer Xerogels

Langmuir, 2004
Crack-free monolithic gels were prepared from different mixtures of colloidal silica with a sol solution containing tetraethoxysilane, under powerful ultrasonic agitation (sonosol). Recently, information on the structure of these gels, inferred from N2 adsorption and mercury intrusion porosimetry, was presented.
Luis, Esquivias, Nicolás, de la Rosa-Fox, Mercedes, Bejarano, Maria J, Mosquera   +3 more
openaire   +2 more sources

Xerogel activated diatoms as an effective hybrid adsorbent for the efficient removal of malachite green

New Journal of Chemistry, 2019
The surface of a naturally available diatom was modified using a xerogel for the enhanced removal of malachite green from aqueous media.
G. Sriram, U. Uthappa, Madhuprasad Kigga, Ho‐Young Jung, T. Altalhi, V. Brahmkhatri, Mahaveer D. Kurkuri   +6 more
semanticscholar   +1 more source