Results 51 to 60 of about 153,743 (299)

Gold nanoparticles electrodeposited on glassy carbon using cyclic voltammetry: Application to Hg(II) trace analysis [PDF]

, 2012
The electrochemical determination of Hg(II) at trace level using gold nanoparticles–modified glassy carbon (AuNPs–GC) electrodes is described. Starting from HAuCl4 in NaNO3, gold nanoparticles (AuNPs) were deposited onto Glassy Carbon (GC) electrodes ...
Abidi, Abollino, Abu-Shawish, Angerstein-Kozlowska, Bobrowski, Bonfil, Brainina, Colilla, Dai, Daniele, Eisler, Finot, Fukai, Gao, Garnier, Giacomino, Gong, Grujicic, Grzelczak, Gunawardena, Hung, Jagner, Jagner, Khustenko, Kinoshita, Komsiyska, Korbas, Laffont, Leopold, Ly, McKeown-Eyssen, Meyer, Miller, Mohanty, Morel, Muntyanu, Onyido, Ordeig, Oyama, O’Mullane, Pinilla, Salaun, Shamsipur, Sipos, Svarc-Gajic, Ugo, Ugo, Viltchinskaia, Wang, Wang, Wang, Welch, Welch, Wen, Wu, Wu, Yi, Yoo, Zhou   +58 more
core   +2 more sources

Hidden Charge‐Order in the Mixed‐Valent K0.75Li2Cr6O12 High‐Pressure Oxide

Advanced Science, EarlyView.
K0.75Li2Cr6O12 is one of the few mixed valent chromium oxides. It shows a single angle spiral magnetic structure with a k = [1/3 1/3 ¼] propagation vector. Density functional theory reveals a hidden charge order that is necessary to stabilize the antiferromagnetic (AFM) ground state.
Angel M. Arévalo‐López, Clemens Ritter, Marielle Huvé, Olivier Mentré   +3 more
wiley   +1 more source

Relationships in the Flipped Classroom

Canadian Journal for the Scholarship of Teaching and Learning, 2017
This study examines the effectiveness of flipped classrooms in chemistry, and identifies relationships as a major factor impacting the success of flipped instruction methods.
Brett M. McCollum, Cassidy L. Fleming, Kara M. Plotnikof, Darlene N. Skagen   +3 more
doaj   +1 more source

La3TaO7 derivatives with Weberite structure type: Possible electrolytes for solid oxide fuel cells and high temperature electrolysers [PDF]

, 2010
In this study, with the aim to enhance the ionic conduction of known structures by defect chemistry, the La2O3-Ta2O5 system was considered with a focus on the La3TaO7 phase whose structure is of Weberite type.
Benamira, Messaoud, Estournès, Claude, Malys, Marcin, Merlin, Cindy, Preux, Nicolas, Rolle, Aurélie, Rubbens, Annick, Vannier, Rose-Noëlle   +7 more
core   +3 more sources

Ion Charge Compensation upon Electrochemical Doping of Redox Polymer Films with Tunable Crosslinking Density

Advanced Electronic Materials, EarlyView.
The electrochemical doping of redox homo‐ and copolymers containing triphenylamine (TPA) as redox‐active units is reported. Electrochemical crosslinking leads to films with tetraphenylbenzidine (TPB) crosslinking units. Advanced electrogravimetric tools are applied to get insights into their mixed ionic‐electronic conducting characteristics: anion ...
Claudia Malacrida, Klaus Dirnberger, El Mahdi Halim, Ozlem Sel, Hubert Perrot, Sabine Ludwigs   +5 more
wiley   +1 more source

Optimization of multiple hearth furnace for biomass torrefaction [PDF]

, 2011
Gasification in entrained flow reactor and co-combustion of biomass in coal power plant are promising technologies of thermo-chemical conversion to produce electricity, heat, fuels and chemicals.
Chataing, Thierry, Commandre, Jean-Michel, Delpech, Françoise, Leboutte, Didier, Marc, Sébastien, Marty, Charlotte   +5 more
core  

Toward Complete CO2 Electroconversion: Status, Challenges, and Perspectives

Advanced Energy Materials, EarlyView.
Electrocatalytic CO2 reduction and CO2 batteries face challenges in achieving complete CO2 conversion with high conversion rates and Faradaic efficiency simultaneously. Existing systems compromise one for the other with incomplete CO2 conversion and inefficiencies, hindering practical applications. This perspective highlights state‐of‐the‐art progress,
Changfan Xu, Ping Hong, Yulian Dong, Marc Robert, Guosheng Shao, Yong Lei   +5 more
wiley   +1 more source

Cation Substitution in High-Entropy Layered Double Hydroxide Driving D-Band Center Tuning for Oxygen Evolution Reaction. [PDF]

Adv Sci (Weinh)
The d‐band center position of layered double hydroxide is adjusted via multication insertion in the octahedral site. The optimal position of the d‐band, near the Fermi level, enhances OER performance through optimal OH− adsorption kinetics, resulting in a 55% reduction in overpotential compared to the native catalyst.
Li P, Li J, Colbeau-Justin C, Berardan D, Ghazzal MN.   +4 more
europepmc   +2 more sources

How Particle Size Affects Consolidation Behavior, Strain and Properties of Li6PS5Cl Fast Ionic Conductors

Advanced Energy Materials, EarlyView.
The densification process of Li6PS5Cl powders with varying particles size distributions reveals differences in smaller and larger distributions. Higher strain is revealed for the smaller particle size distribution from X‐ray diffraction. Discrete element method simulations uncover that the reason for the higher strain is not the particle size itself ...
Vasiliki Faka, Mohammed Alabdali, Martin A. Lange, Franco M. Zanotto, Can Yildirim, Mikael Dahl Kanedal, Jędrzej Kondek, Matthias Hartmann, Oliver Maus, Dominik Daisenberger, Michael Ryan Hansen, Jozef Keckes, Daniel Rettenwander, Alejandro A. Franco, Wolfgang G. Zeier   +14 more
wiley   +1 more source

A Failed Encounter in Mathematics and Chemistry: The Folded Models of van ‘t Hoff and Sachse [PDF]

, 2016
Three-dimensional material models of molecules were used throughout the 19th century, either functioning as a mere representation or opening new epistemic horizons. In this paper, two case studies are examined: the 1875 models of van ‘t Hoff and the 1890
Friedman, Michael
core