نتایج جستجو برای: electrochemical reaction

تعداد نتایج: 458008  

Journal: :Chemical communications 2008
Ryosuke Asami Toshio Fuchigami Mahito Atobe

The anodic substitution reaction proceeded smoothly without affecting the oxidation of the nucleophile in a one-step electrochemical operation using acoustic emulsification.

Journal: :Bioconjugate chemistry 2008
Marisa C Buzzeo Jacqueline K Barton

Redmond Red, a fluoropore containing a redox-active phenoxazine core, has been explored as a new electrochemical probe for the detection of abasic sites in double-stranded DNA. The electrochemical behavior of Redmond Red-modified DNA at gold surfaces exhibits stable, quasi-reversible voltammetry with a midpoint potential centered around -50 mV versus NHE. Importantly, with Redmond Red positione...

2016
Shizhi Qian Zongyuan Chen Jing Wang Haim H. Bau

Transport processes in an upright, concentric, annular, electrochemical reactor filled with RedOx electrolyte solution are studied experimentally and theoretically. The electrodes form the two vertical surfaces of the reactor. The theoretical calculations consist of the solution of the Navier-Stokes and the Nernst-Planck equations accounting for species' diffusion, migration, convection, and el...

2014
Iris De Graeve Annick Hubin Herman Terryn Yves Van Ingelgem

Local Electrochemical Impedance Spectroscopy (LEIS) is an emerging discipline in the field of electrochemical research. It is based on the widely accepted Electrochemical Impedance Spectroscopy (EIS) technique, a powerful method to determine reaction mechanisms on macroscopic electrodes. When however the electrode represents a heterogeneous behavior, local information is indispensable. This pro...

2016
L. M. DONG K. X. SHI L. G. JIN Z. D. HAN X. Y. ZHANG

MnO2 materials are prepared through a hydrothermal process. Sn-doping and composite graphene are both achieved simultaneously during the hydrothermal reaction then obtain the electrode materials of supercapacitors. Morphology, structure and electrochemical properties of the samples are evaluated by X-ray diffraction(XRD), scanning electron microscopy (SEM), and electrochemical work station. The...

Journal: :European journal of mass spectrometry 2010
Hubert Girault BaoHong Liu Liang Qiao HongYan Bi Michel Prudent Niels Lion Mélanie Abonnenc

Electrochemical or photo-electrochemical reactions in both electrospray ionization and laser desorption ionization are discussed stressing the role of the electrode reaction in influencing the ionization process. In particular, upon application of a high voltage during electrospray ionization, the emitter includes a working electrode, where redox reactions are observed, such as electro-generati...

2003
Gang Wu Ning Li Chang Song Dai Rui Zhou

Electrocatalytic activity for the hydrogen evolution reaction on Ni–Co–LaNi5 composite electrodes prepared by electrochemical codeposition technique was evaluated. The relationship between the current density for hydrogen evolution reaction and the amount of LaNi5 particles in Ni–Co baths is like the well-known “volcano plot”. The Surface morphology and microstructure of Ni–Co–LaNi5 coatings we...

Journal: :Small 2012
Hayden A Burgoyne Philseok Kim Mathias Kolle Alexander K Epstein Joanna Aizenberg

A rapid screening method for optimizing electrochemical deposition conditions of polypyrrole (PPy) nanostructures is reported. An electrochemical cell is integrated within a low-cost microfluidic system, in which electrochemical deposition is carried out across a linear concentration gradient of a reaction parameter. The protocol, refered to as the screening of conditions for rationally enginee...

Journal: :Environmental science & technology 2013
Junfeng Niu Hui Lin Chen Gong Xiaomin Sun

The electrochemical mineralization mechanism of environmentally persistent perfluorooctanoic acid (PFOA) at a Ce-doped modified porous nanocrystalline PbO2 film anode was investigated using density functional theory (DFT) simulation and further validated experimentally. The potential energy surface was mapped out for all possible reactions during electrochemical mineralization reaction of PFOA....

2017
Chuan-Fu Lin Xiulin Fan Alexander Pearse Sz-Chian Liou Keith Gregorczyk Michal Leskes Chunsheng Wang Sang Bok Lee Gary W. Rubloff Malachi Noked

High-energy conversion electrodes undergo successive Li insertion and conversion during lithiation. A primary scientific obstacle to harnessing the potentially high lithium storage capabilities of conversion electrode materials has been the formation of insulating new phases throughout the conversion reactions. These new phases are chemically stable, and electrochemically irreversible if formed...

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