Results 41 to 50 of about 12,023 (217)

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Synthesis and Characterization of Mo₂C/MoO₃ Nanohybrid as Electrocatalyst for Hydrogen Evolution Reaction

Chemical Engineering Transactions, 2015
The two-step preparation of core-shell Mo2C/MoO3 nanoplatelets (composed of an MoO3 core covered by 3 nm Mo2C outer layer) is reported. The process consists of the thermolysis of a solid precursor, ammonium molybdate ((NH4)6Mo7O24•·4H2O), in a reactor ...
M. Sarno, C. Cirillo, E. Ponticorvo, P. Ciambelli   +3 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Formation of Surface Profile in Controlled Pulse Modes of Electrolytic-Plasma Treatment

Механика машин, механизмов и материалов
To improve the efficiency of electrolytic-plasma treatment methods, modes based on the use of controlled pulses have been developed. The modes are implemented by alternating high-voltage pulses corresponding to the electrolytic-plasma region and current ...
Aleksandr Yu. Korolyov, Vyacheslav A. Tomilo, Vladimir S. Niss   +2 more
doaj   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Enhancement of Acetone Gas-Sensing Responses of Tapered WO₃ Nanorods through Sputtering Coating with a Thin SnO₂ Coverage Layer

Nanomaterials, 2019
WO3−SnO2 composite nanorods were synthesized by combining hydrothermal growth of tapered tungsten trioxide (WO3) nanorods and sputter deposition of thin SnO2 layers.
Yuan-Chang Liang, Yu Chao
doaj   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Improved numerical simulation of the low temperature Fischer-Tropsch synthesis in a trickle bed reactor [PDF]

Iranian Journal of Chemical Engineering, 2018
Gas to liquid (GTL) process involves heterogeneous catalytic chemical reactions that convert synthesis gas to hydrocarbons and water vapor. A three phase reactor, called Low temperature Fischer-Tropsch (LTFT) is commonly applied for GTL process.
H. Salimi, Sh. shahhosseini
doaj  

Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field

Advanced Functional Materials, EarlyView.
Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi, Zhengyuan Gao, Sai Phani Kumar Vangala, Amirhossein Farzi, Hamed Heidarpour, Morgan McKee, Nikolay Kornienko, Ali Seifitokaldani   +7 more
wiley   +1 more source

Analysis of chemical interactions during filling a cesium vapor cell for a quantum magnetometer

Научно-технический вестник информационных технологий, механики и оптики
The results of the development and research of the technological process for manufacturing spherical vapor cells are presented. Such cells are used in quantum devices, such as magnetometers, gyroscopes, and atomic clocks.
O. S. Yulmetova, A. G. Shcherbak, P. Е. Reshetnyak, A. S. Zavitaev, A. N. Shevchenko, R. F. Yulmetova   +5 more
doaj   +1 more source