نتایج جستجو برای: cathodic electrodeposition

تعداد نتایج: 7548  

2008
M. S. Chandrasekar Malathy Pushpavanam

A review on pulse and pulse reverse techniques for electrodeposition have been attempted. Pulse electrodeposition (PED) of some metals and lloys are reported. The effects of mass, transport, electrical double layer pulse parameters and current distribution on surface roughness and orphology are presented. Applications, advantages and disadvantages of PC and PRC techniques are discussed along wi...

Journal: :Journal of the American Chemical Society 2009
Yogesh Surendranath Mircea Dinca Daniel G Nocera

Electrolysis of Co(2+) in phosphate, methylphosphonate, and borate electrolytes effects the electrodeposition of an amorphous highly active water oxidation catalyst as a thin film on an inert anode. Electrodeposition of a catalytically competent species immediately follows oxidation of Co(2+) to Co(3+) in solution. Methylphosphonate and borate electrolytes support catalyst activity comparable t...

Journal: :شیمی کاربردی 0
فرزانه شمیرانی farzaneh shemirani مریم رجبی maryam rajabi

a selective and sensitive method for determination of cadmium and zinc is presented. the method is based on adsorptive accumulation of the complexes of cd (ii) and zn (ii) ions with 4-amiono-5-methyl-2,4-dihydro-3h-1,2,4-triazol-3-tion (mmtt) onto hanging mercury drop electrode (hmde), followed by reduction of the adsorbed species by voltammetric scan using differential pulse modulation. the li...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده مواد 1389

در این تحقیق پوشش های کامپوزیتی ni – bn ، ni – b4c و ni – bn – b4c به روش آبکاری الکتریکی بر روی زیر لایه مس اعمال و خواص آن مورد بررسی قرار گرفته است. در این راستا پوشش های کامپوزیتی ni – bn و ni – b4c حاوی درصد های مختلفی پودر bn و b4c تولید و خواص آنها با یکدیگر مقایسه شد. به منظور ایجاد شرایط بهینه پراکندگی ذرات در محلول آبکاری، با استفاده از دستگاه zetasizer پتانسیل زتای محلول ها مورد بررس...

Journal: :Eastern-European Journal of Enterprise Technologies 2021

Electrochemical devices based on nickel hydroxide electrodes are used in different areas. The main ones chemical current sources, variable transparency “smart” windows, for carrying out electrocatalytic reactions, sensors determining various substances. In this regard, methods of synthesis great interest, especially those that allow forming directly the surface electrodes. One these is electroc...

2012
C. A. Loto

Electrodeposition of zinc on mild steel in acid chloride solution using as additive, different concentrations of ananas comosus (pineapple) juice extracts, was investigated. Different additive concentrations, plating time, and constant pH conditions were used for the experiments. The electrodeposition of zinc on mild steel was performed using a DC – supply. The surface of the plated steel was e...

2006
Torsten Oekermann Cathrin Boeckler Armin Feldhoff Michael Wark

ZnO films can be electrodeposited cathodically from aqueous zinc salt solutions in the presence of oxidants like O2 [1]. The electrodeposition of nanoporous ZnO was first demonstrated by addition of water-soluble organic dye molecules with anionic groups such as –SO3 or – COO, which adsorb on the growing ZnO surface, to the electrodeposition bath [2]. More recently, addition of amphiphilic mole...

Journal: :Angewandte Chemie 2017
Xiao Yang Li Ji Xingli Zou Taeho Lim Ji Zhao Edward T Yu Allen J Bard

Electrodeposition of Si films from a Si-containing electrolyte is a cost-effective approach for the manufacturing of solar cells. Proposals relying on fluoride-based molten salts have suffered from low product quality due to difficulties in impurity control. Here we demonstrate the successful electrodeposition of high-quality Si films from a CaCl2 -based molten salt. Soluble SiIV -O anions gene...

2013
Ghafar Ali Muhammad Maqbool

Cobalt-nickel (Co-Ni) binary alloy nanowires of different compositions were co-deposited in the nanopores of highly ordered anodic aluminum oxide (AAO) templates from a single sulfate bath using alternating current (AC) electrodeposition. AC electrodeposition was accomplished without modifying or removing the barrier layer. Field emission scanning electron microscope was used to study the morph...

Journal: :Physical chemistry chemical physics : PCCP 2015
Minxian Wu Gijs Vanhoutte Neil R Brooks Koen Binnemans Jan Fransaer

The electrodeposition of germanium at elevated temperatures up to 180 °C and pressures was studied from the ionic liquids 1-butyl-1-methylpyrrolidinium dicyanamide and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide containing [GeCl4(BuIm)2] (where BuIm = 1-butylimidazole) or GeCl4. Cyclic voltammetry (CV), electrochemical quartz crystal microbalance (EQCM), rotating ring-disk e...

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