Results 61 to 70 of about 13,531 (230)

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

The local structure of molecular reaction intermediates at surfaces [PDF]

, 2008
A critical review is presented of the results of (experimental) quantitative structural studies of molecular reaction intermediates at surfaces; i.e. molecular species that do not exist naturally in the gas phase and, in most cases, are implicated in ...
(erratum), Afsin, Afsin, Bader, Bader, Bao, Bao, Baumgärtel, Bengió, Benner, Besenthal, Bittencourt, Bjrkqvist, Blackman, Bondino, Bondino, Booth, Booth, Booth, Brown, Burch, Caldwell, Caldwell, Carley, Chambers, Chen, Churchill, Colaianni, Corrigan, Crapper, D. P. Woodruff, Daum, Demuth, Dietrich, Franco, Franco, Guo, Guo, Gutiérrez-Sosa, Haase, Harrison, Harrison, Hayden, Heinz, Hirschmugl, Hofmann, Holub-Krappe, Huerta, Jackson, Jackson, Jakob, Johnston, Johnston, Kang, Kerkar, Kesmodel, Kittel, Knight, Koestner, Kordesch, Kordesch, Kröger, Kunimatsu, Käckell, Lehwald, Lindner, Madix, Miners, Mullins, Nakahashi, Ormerod, Outka, Outka, Pascal, Puschmann, Robinson, Sapína, Sayago, Sayago, Schaff, Schindler, Schindler, Schreiber, Sotiropoulos, Starke, Stöhr, Stöhr, Takayanagi, Thevuthasan, Uekusa, Ulman, Wander, Wander, Weiss, Wienberg, Woodruff, Woodruff, Woodruff, Woodruff, Woodruff, Yamanaka, Yawney, Zheng, Öström   +103 more
core   +1 more source

Beyond Nitrogen in the Oxygen Reduction Reaction on Nitrogen-Doped Carbons: A NEXAFS Investigation

Nanomaterials, 2021
Polymer electrolyte membrane fuel cells require cheap and active electrocatalysts to drive the oxygen reduction reaction. Nitrogen-doped carbons have been extensively studied regarding their oxygen reduction reaction.
Eugenia Tanasa, Florentina Iuliana Maxim, Tugce Erniyazov, Matei-Tom Iacob, Tomáš Skála, Liviu Cristian Tanase, Cătălin Ianăși, Cristina Moisescu, Cristina Miron, Ioan Ardelean, Vlad-Andrei Antohe, Eugenia Fagadar-Cosma, Serban N. Stamatin   +12 more
doaj   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Temperature-dependent templated growth of porphine thin films on the (111) facets of copper and silver

, 2014
The templated growth of the basic porphyrin unit, free-base porphine (2H-P), is characterized by means of X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine-structure (NEXAFS) spectroscopy measurements and density functional ...
Allegretti, Francesco, Barth, Johannes V., Diller, Katharina, Duncan, David A., Fischer, Sybille, Klappenberger, Florian, Lloyd, Julian A., Maurer, Reinhard J., Oh, Seung Cheol, Papageorgiou, Anthoula C., Reuter, Karsten   +10 more
core   +1 more source

Thermosensitive Cu2O-PNIPAM core-shell nanoreactors with tunable photocatalytic activity [PDF]

, 2016
We report a facile and novel method for the fabrication of Cu2O@PNIPAM core-shell nanoreactors using Cu2O nanocubes as the core. The PNIPAM shell not only effectively protects the Cu2O nanocubes from oxidation, but also improves the colloidal stability ...
Angioletti-Uberti, Stefano, Ballauff, Matthias, Dzubiella, Joachim, Henzler, Katja, Jia, He, Kochovski, Zdravko, Lin, Xianzhong, Lu, Yan, Möser, Jannik, Ott, Andreas, Roa, Rafael, Schnegg, Alexander   +11 more
core   +3 more sources

Operando X‐ray Spectroscopy Study of Pd and Pd–Au Laterally Condensed Catalysts during Selective Acetylene Hydrogenation: The Role of Carbon

Advanced Materials, EarlyView.
The selective hydrogenation of acetylene over laterally condensed Pd and Pd–Au catalysts (LCCs) was investigated using operando X‐ray absorption and photoelectron spectroscopy in combination with density functional theory. Pd‐LCCs were found to incorporate significantly more carbon into the metal lattice than Pd–Au LCCs, where the carbon uptake governs
Eylül Öztuna, Thomas Götsch, Daniel Cruz, Patrick Zeller, Olga V. Vinogradova, Zehua Li, Christian Rohner, Franz‐Philipp Schmidt, Zahra Gheisari, Alexander Steigert, Martin Muske, Michael Hävecker, Eugen Stotz, Iryna Antonyshyn, Frank Girgsdies, Olaf Timpe, Thomas Lunkenbein, Vanessa J. Bukas, Karsten Reuter, Robert Schlögl, Katarzyna Skorupska, Axel Knop‐Gericke, Beatriz Roldán Cuenya   +22 more
wiley   +1 more source

Atomic-scale investigation of MgO growth on fused quartz using angle-dependent NEXAFS measurements

RSC Advances, 2018
The phenomena related to thin film growth have always been interesting to the scientific community. Experiments related to these phenomena not only provide an understanding but also suggest a path for the controlled growth of these films. For the present
Jitendra Pal Singh, So Hee Kim, S. Won, Ik-Jae Lee, K. Chae   +4 more
semanticscholar   +1 more source

Mitigating Electrochemical Isolation in Ni‐Rich Layered Cathodes for Durable Solid‐State Batteries

Advanced Science, EarlyView.
Electrochemical isolation of Ni‐rich layered cathodes in sulfide solid‐state batteries is uncovered as a previously unrecognized but critical performance‐limiting pathway. This study elucidates its origin and impact and introduces a scalable mitigation strategy using oxygen‐functionalized conductive carbon.
Abhirup Bhadra, Maxime Brunisholz, Aditya Rawal, Jacob Otabil Bonsu, Tongjun Luo, Lars Thomsen, Wesley M. Dose, Dipan Kundu   +7 more
wiley   +1 more source

Structural and electronic properties of the graphene/Al/Ni(111) intercalation-like system

, 2011
Decoupling of the graphene layer from the ferromagnetic substrate via intercalation of sp metal has recently been proposed as an effective way to realize single-layer graphene-based spin-filter.
Boettcher, S., Dedkov, Yu. S., Generalov, A., Horn, K., Voloshina, E. N., Weser, M.   +5 more
core   +1 more source