Results 31 to 40 of about 1,946 (182)

The Role of Cations in Resorcinol–Formaldehyde Gel Textural Characteristics

Gels, 2022
The production of resorcinol–formaldehyde xerogels has yielded insight into the gelation processes underpinning their structures. In this work, the role of the cation species from the catalyst is probed by studying the simultaneous addition of sodium ...
Stewart J. Taylor, Liu Yang, Ashleigh J. Fletcher   +2 more
doaj   +1 more source

Structural Features of Surface Layers of Bifunctional Polysiloxane Xerogels Containing 3-Aminopropyl Groups and 3-Mercaptopropyl Groups

Adsorption Science & Technology, 2008
Polysiloxane xerogels containing both –SH and –NH 2 functions have been prepared using the sol–gel method with alkoxysilane precursors [such as Si(OEt) 4 , (MeO) 3 Si(CH 2 ) 3 SH and (EtO) 3 Si(CH 2 ) 3 NH 2 ].
Yuriy L. Zub, Inna V. Melnyk, Mark G. White, Bruno Alonso   +3 more
doaj   +1 more source

Exploring the difference in xerogels and organogels through in situ observation [PDF]

Royal Society Open Science, 2018
Solvent–gelator interactions play a key role in mediating organogel formation and ultimately determine the physico-chemical properties of the organogels and xerogels.
Binglian Bai, Zhiming Li, Haitao Wang, Min Li, Yukihiro Ozaki, Jue Wei   +5 more
doaj   +1 more source

Hydrophilic Antimicrobial Coatings for Medical Leathers from Silica-Dendritic Polymer-Silver Nanoparticle Composite Xerogels

Textiles, 2022
Hybrid organic-inorganic (dendritic polymer-silica) xerogels containing silver nanoparticles (Ag Nps) were developed as antibacterial leather coatings. The preparation method is environmentally friendly and is based on two biomimetic reactions.
Michael Arkas, Georgia Kythreoti, Evangelos P. Favvas, Konstantinos Giannakopoulos, Nafsica Mouti, Marina Arvanitopoulou, Ariadne Athanasiou, Marilina Douloudi, Eleni Nikoli, Michail Vardavoulias, Marios Dimitriou, Ioannis Karakasiliotis, Victoria Ballén, Sara Maria Soto González   +13 more
doaj   +1 more source

Preparation of Controlled Porosity Resorcinol Formaldehyde Xerogels for Adsorption Applications

Chemical Engineering Transactions, 2013
The synthesis of resorcinol formaldehyde xerogels was investigated by controlling its porosity for potential use as adsorbents for heavy metals removal from industrial wastewater.
E. Oyedoh, A.B. Albadarin, G.M. Walker, M. Mirzaeian, M. Ahmad   +4 more
doaj   +1 more source

Emulsion Gels as Precursors for Porous Silicones and All-Polymer Composites—A Proof of Concept Based on Siloxane Stabilizers

Gels, 2022
In spite of its versatility, the emulsion templating method is rather uncommon for the preparation of porous silicones. In this contribution, two siloxane-containing stabilizers, designed to be soluble in polar (water) and non-polar (toluene) solvents ...
Carmen Racles, Adrian Bele, Ana-Lavinia Vasiliu, Liviu Sacarescu   +3 more
doaj   +1 more source

K+‐Triggered Defect Engineering and Proton‐Coupled Storage in V2O5·nH2O for Advanced Zn‐Ion Thin‐Film and Microbatteries

Advanced Science, EarlyView.
K+ pre‐intercalation in V2O5·nH2O induces interlayer contraction, oxygen‐vacancy formation, and mixed‐valence states, activating defect‐mediated proton‐dominated transport. This enables cooperative H+/Zn2+ storage with enhanced kinetics and stability. The resulting Zn‐based thin‐film and microbatteries deliver high areal energy and capacity, offering a
Jingli Luo, Sanat Nalini Paltasingh, Bastola Narayan, Yijia Zhu, Debashish Das, Shuhui Li, Firoz Alam, Subhra R. Pattanayak, Sijin Liu, Tharangattu N. Narayanan, Georgios Nikiforidis, Gopinathan Sankar, Ivan P. Parkin, Saroj Kumar Nayak, Buddha Deka Boruah   +14 more
wiley   +1 more source

Graphitized Carbon Xerogels for Lithium-Ion Batteries [PDF]

Materials, 2019
Carbon xerogels with different macropore sizes and degrees of graphitization were evaluated as electrodes in lithium-ion batteries. It was found that pore structure of the xerogels has a marked effect on the degree of graphitization of the final carbons.
Maria Canal-Rodríguez, Ana Arenillas, Sara F. Villanueva, Miguel A. Montes-Morán, J. Angel Menénedez   +4 more
openaire   +3 more sources

Design of Phytic Acid Crosslinked Xerogels as Organic Photocatalysts for Visible Light‐Assisted Degradation of Dyes

Advanced Materials Interfaces
Extensive research is being carried out on the degradation of water pollutants using various strategies to overcome the global water crisis. In the present study, xerogels as a better alternative is utilized to metal oxides for the photocatalytic ...
Aleena Mir, Elham S. Aazam, Ufana Riaz
doaj   +1 more source

High‐Entropy Engineering and External Magnetic Field Modulation Synergistically Enhance the H2S Sensing Performance of Rare‐Earth Perovskite Ferrites

Advanced Science, EarlyView.
A novel high‐entropy perovskite oxide, (Gd0.2Tb0.2Dy0.2Ho0.2Er0.2)FeO3, was successfully synthesized for advanced hydrogen sulfide gas detection. By synergistically coupling high‐entropy‐induced local lattice distortion with weak magnetic field modulation, the tailored material generates abundant active sites. This innovative dual strategy dramatically
Yunfei Wang, Min Zhang, Rui Li, Xiaolong Yao, Zhaofeng Wu, Fengdong Qu, Shan Qiu, Zhenjiang Li   +7 more
wiley   +1 more source