Results 111 to 120 of about 3,912 (301)

Heteropoly compounds - From proton conductors to biomedical agents [PDF]

, 2005
Heteropoly compounds (HPCs) have been a matter of interest in basic and applied science for more than a century. From their first synthesis, many advances have been made to promote the use of HPCs in different ways in science and technology.
Holclajtner-Antunović, Ivanka D., Todorovic, MR, Colomban, P, Mioč, Ubavka B., Davidovic, A, Mioc, UB   +5 more
core   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source

Porous silica nanospheres functionalized with phosphonic acid as intermediate-temperature proton conductors [PDF]

, 2009
This paper reports the first study of developing porous silica nanospheres functionalized with phosphonic acid as intermediate-temperature (above 100 °C) proton conductors.
Qiao, S., Lu, G., Jin, Y., da Costa, J., Xu, Z.   +4 more
core   +1 more source

Nano‐Scale Characterization of Impurities Segregation in Solid Oxide Electrolysis Cells

Advanced Functional Materials, EarlyView.
Cathodic polarization induces impurity segregation in Ni, forming an amorphous Na─Al─Si─O amorphous phase at grain boundaries. Under ultralow oxygen partial pressure, multiple elements dissolve, migrate, and reoxidize within the metal. A patterned model system provides direct nanoscale evidence, clarifying the mechanism of polarization‐driven impurity ...
Zhongtao Ma, Qingjie Wang, Bowen Li, Vasileios Bilalis, Søren Bredmose Simonsen, Ming Chen   +5 more
wiley   +1 more source

Structural modifications of Cu(II) 12-tungstophosphoric acid salit studied by IR and Raman spectroscopy

Journal of the Serbian Chemical Society, 2000
In this paper local processes and structural phase transformations of the copper salt of 12-tungstophosphoric acid are investigated. The structural phase transformations were followed through bands, characteristic for the host lattice, in the IR and ...
TAMARA CAJKOVSKI, VOJISLAV STAMENKOVIC, ZORAN P. NEDIC, SNEZANA M. USKOKOVIC-MARKOVIC, MARIJA R. TODOROVIC, UBAVKA B. MIOC   +5 more
doaj  

Pretransition Phenomena in Fast-Proton Conductors

Acta Physica Polonica A, 2005
The proton transfer along hydrogen-bonded channels has been recognized to be responsible for the charge conduction in many organic and biological systems [1–3]. Proton conducting solids are also of interest because of their potential use in fuel cells [4, 5].
S. Waplak, W. Bednarski, A. Ostrowski
openaire   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Clusterization‐Triggered Emission from Cellulose‐Based Luminophores in Dilute Aqueous Solution through Imine Formation

Advanced Functional Materials, EarlyView.
Clusterization‐triggered emission is realized in dilute aqueous solution by introducing imine linkages into cellulose‐based luminophores. Imine functionalization creates O/N‐rich, hydrogen‐bonded clustered microenvironments that stabilize emissive states and restrict molecular motions. Luminescence is tunable by amine type and multiplicity.
Yazhou Su, Akihide Sugawara, Madhurangika Panchabashini Horathal Pedige, Youhei Takeda, Satoshi Minakata, Hiroshi Uyama   +5 more
wiley   +1 more source

Synthesis, sintering behavior and electrical properties of Ba(Zr0.1Ce0.7Y0.2) O3-delta and Ba(Zr0.1Ce0.7Y0.1Yb0.1)O3-delta proton conductors [PDF]

, 2014
Perovskite-type Ba(Zr0.1Ce0.7Y0.2)O3-delta (BZCY) and Ba(Zr0.1Ce0.7Yb0.1)O3-delta (BZCYYb) proton conductor powders were synthesized by a novel solid-liquid composite method.
He, Chang Rong, Wang, Jian Xin, Sen Wang, Mao, Miao, He, Yang, Kun, Xue, Ye Jian, Wang, Wei Guo, Wang, Qin   +7 more
core  

Polymer‐Redox Interactions Enhance Ferro/Ferricyanide Thermogalvanic Cells

Advanced Functional Materials, EarlyView.
Polyelectrolyte could modify the hydration structure of the redox couple in solution and improve the output performance of thermogalvanic cells, providing new fundamental insight into how electrostatic interactions can be exploited to tailor thermoelectric properties.
Pedro Santos Candiotto de Oliveira, Ziyauddin Khan, Swathi Suneesh, Sarbani Ghosh, Zia Ullah Khan, Reverant Crispin, Dan Zhao   +6 more
wiley   +1 more source