نتایج جستجو برای: electrochemical activity

تعداد نتایج: 1181118  

2016
Yue Feng Ke Zhang Bo Yan Shumin Li

In this article, we developed a facile one-step hydrothermal method using dimethyl formamide (DMF) as a reducing agent for the fabrication of PdAg catalyst. The scanning electron microscope (SEM) and transmission electron microscopy (TEM) images have shown that the as-synthesized PdAg catalyst had a nanochain structure. The energy-dispersive X-ray analyzer (EDX) spectrum presented the actual mo...

Journal: :Molecules 2007
Aleksandra Simić Dragan Manojlović Dejan Segan Marija Todorović

We have investigated the electrochemical oxidation of a number natural phenolics (salicylic acid, m-hydroxybenzoic acid, p-hydroxybenzoic acid, protocatechuic acid, o-coumaric acid, m-coumaric acid, p-coumaric acid, caffeic acid, quercetin and rutin) using cyclic voltammetry. The antioxidant properties of these compounds were also studied. A structural analysis of the tested phenolics suggests ...

2014
Y. Kanno K. Ino K. Y. Inoue A. Suda M. Matsudaira H. Shiku T. Matsue

In this present study, we fabricated an LSI-based amperometric chip device with highly temporal and spacial resolution for electrochemical imaging, applied to detection of alkaline phosphatase (ALP) activity and respiration activity of embryonic stem (ES) cells.

Journal: :Soft matter 2015
Xueyi Chang Zhiyu Cheng Biye Ren Renfeng Dong Jun Peng Shiyu Fu Zhen Tong

A new type of voltage-responsive comb-like superamphiphilic block polymer PEG113-b-PAA30/FTMA was prepared by the electrostatic interactions of an ionic ferrocenyl surfactant (FTMA) and an oppositely charged double-hydrophilic block polyelectrolyte poly-(ethylene glycol)-b-poly(acrylic acid) (PEG113-b-PAA30) in aqueous solution. An in situ electrochemical redox system was designed to research i...

2016
Jingke Mo Zhenye Kang Scott T Retterer David A Cullen Todd J Toops Johney B Green Matthew M Mench Feng-Yuan Zhang

Better understanding of true electrochemical reaction behaviors in electrochemical energy devices has long been desired. It has been assumed so far that the reactions occur across the entire catalyst layer (CL), which is designed and fabricated uniformly with catalysts, conductors of protons and electrons, and pathways for reactants and products. By introducing a state-of-the-art characterizati...

2011
R. M. Souto S. V. Lamaka S. González

This paper provides a brief review of a relatively new technique, namely scanning electrochemical microscopy (SECM), and its applications in measuring, characterising and evaluating corroding systems. Localized corrosion processes and electrochemical activity distributions in surfaces can thus be investigated in real time with high spatial resolution. The SECM is a unique near-field scanning te...

Journal: :physical chemistry and electrochemistry 0
elham eslami department of chemistry, kazerun branch, islamic azad university, kazerun, iran fatemeh farjami bdepartment of chemistry, science and research branch, islamic azad university, fars, iran

a carbon nanocomposite electrode has been designed by incorporation of montmorillonite nanoclayinto the carbon ionic liquid electrode for the electrochemical determination of amitriptiline . the surface ofthe proposed electrode was characterized by scanning electron microscopy. the presence of ionic liquid asa binder is believed to be responsible for the electrocatalytic activity of the propose...

2016
Mufan Li Zipeng Zhao Tao Cheng Alessandro Fortunelli Chih-Yen Chen Rong Yu Qinghua Zhang Lin Gu Boris Merinov Zhaoyang Lin Enbo Zhu Ted Yu Qingying Jia Jinghua Liang Zhang William A. Goddard Yu Huang Xiangfeng Duan

Improving the platinum (Pt) mass activity for the oxygen reduction reaction (ORR) should optimize both the specific activity and the electrochemical active surface area (ECSA). We show that solution-synthesized Pt/NiO core/shell nanowires can be readily converted into PtNi alloy nanowires through a post-synthesis thermal annealing process, and then transformed into jagged Pt nanowires via an el...

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