Results 41 to 50 of about 114,579 (263)

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

Advanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán, Janis Timoshenko, Andrea Martini, Hyo Sang Jeon, Eduardo Ortega, Martina Rüscher, Arno Bergmann, Aram Yoon, Uta Hejral, Antonia Herzog, Clara Rettenmaier, Felix T. Haase, Philipp Grosse, Beatriz Roldan Cuenya   +13 more
wiley   +1 more source

Silica gel functionalized with imidazolium group via click chemistry – new stationary phase for ion chromatography

Chimica Techno Acta, 2021
This manuscript describes the preparation of a simple effective ion-exchange material based on silica gel, on the surface of which methylimidazolium bromide is fixed using a click reaction.
D. A. Chuprynina, I. A. Lupanova, V. V. Konshin, D. N. Konshina   +3 more
doaj   +1 more source

Electrospray ionization mass spectrometry ion suppression/enhancement caused by column bleed for three mixed‐mode reversed‐phase/anion‐exchange high‐performance liquid chromatography columns [PDF]

, 2021
Thomas H. Walter, Melvin Blaze M. T., Cheryl Boissel   +2 more
openalex   +1 more source

Selective and Precise Editing of Digital Polymers Through Parallel or Series Toehold‐Mediated Strand Displacement

Advanced Functional Materials, EarlyView.
A sequence‐encoded supramolecular construct containing two accessible toeholds is developed herein for enabling multiple editing operations. By introducing specific input strands, it is possible to selectively erase or rewrite digital content through parallel or series toehold‐mediated strand displacement (PTMSD or STMSD).
Jakub Ossowski, Cyril Antheaume, Jean‐François Lutz, Maria Nerantzaki   +3 more
wiley   +1 more source

Analysis of metabolic profiles of bile acids in urine using a lipophilic anion exchanger and computerized gas-liquid chromatorgaphy-mass spectrometry

Journal of Lipid Research, 1977
A method is described for quantitative analysis of bile acids in urine. Urine is acidified and bile acids are extracted on an Amberlite XAD-2 column.
B Almé, A Bremmelgaard, J Sjövall, P Thomassen   +3 more
doaj   +1 more source

Tunable Coordination Number in Non‐Metal‐Introduced Copper Catalysts Enables High‐Performance Electrochemical CO2 Reduction to C2 Products

Advanced Functional Materials, EarlyView.
Copper catalysts introduced with different non‐metallic elements regulating the coordination number of Cu are prepared by magnetron sputtering. Reducing the Cu coordination number enhances C─C coupling and boosts C2+ product selectivity, by lowering the energy barrier for the *CO → *CHO conversion step. The optimized Si‐doped Cu catalyst achieves a C2+
Xiaoye Du, Bo Gao, Yixuan Yang, Young In Jo, Dan Qian, Chunhui Xiao, Shujiang Ding, Zhongxiao Song, Ki Tae Nam   +8 more
wiley   +1 more source

Medium optimization to analyze the protein composition of Bacillus pumilus HR10 antagonizing Sphaeropsis sapinea

AMB Express, 2022
Keypoints Fermentation medium with high antagonistic activity of HR10 strain was determined. Antagonistic crude protein of HR10 strain purified by Ion-Exchange Chromatography.
Yun Dai, Ya-Hui Wang, Min Li, Mei-Ling Zhu, Tong-Yue Wen, Xiao-Qin Wu   +5 more
doaj   +1 more source

Mechanochemistry‐Assisted Solvent‐Free Supramolecular Engineering for Atomic‐Layered Carbon Nitride Nanosheets with Enhanced Photocatalytic Hydrogen Evolution

Advanced Functional Materials, EarlyView.
A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao, Jingwen Sun, Huiru Duan, Yongsheng Fu, Jin Wang, Liming Dai, Jingsan Xu, Junwu Zhu   +7 more
wiley   +1 more source

Determinação de bromato em melhoradores de farinha por cromatografia de troca iônica com detecção espectrofotométrica Bromate determination in flour improvers by ion exchange chromatography with spectrophotometric detection

Química Nova, 2005
KBrO3 is registered by the FAO/OMS as a genotoxic and carcinogenic compound. In spite of this, KBrO3 is still employed by Brazilian bakeries. Nowadays ion exchange chromatography (IEC) is the most rapid and trustful method for BrO3- analysis.
Rogério Marcos Dallago, Irajá do Nascimento Filho, Renato Zanella, Aline Machado Maroneze   +3 more
doaj   +1 more source