کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5355763 1503629 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology-controlled preparation of lead powders by electrodeposition from different PbO-containing choline chloride-urea deep eutectic solvent
ترجمه فارسی عنوان
تهیه پودر سرب تحت کنترل مورفولوژیک توسط الکترودهایی از محلول پتاسیم عمیق کولین کلرید اوره
کلمات کلیدی
پودر سرب، الکترود کنترل مورفولوژی، ویژگی کریستالوگرافی، حلال های عمیق یوتکتیک،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
Lead powders with different morphologies, including corals, rods, wires, needles, ferns and dendritic forms, are prepared by electrodeposition onto a stainless steel substrate from different PbO-containing (10-60 mM) choline chloride-urea deep eutectic solvent at cell voltage 2.5 V and 343 K for 2 h. The electrochemical behavior of the PbO dissolved in this solvent is investigated with cyclic voltammetry. It is demonstrated that the increasing of PbO concentration makes the reduction potential EPb(II)/Pb shift positively and facilitates the electrodeposition of lead from PbO in the deep eutectic solvent. According to the analysis of the morphological and crystallographic characteristics of lead powders, the predominant origin of the growth layers is turned away from centre type towards the edge and corner types with the increase in PbO concentration. Due to the large number of growth centres at higher PbO concentration, fine and irregular grains are observed on the surface of formed particles which results in the development of primary and secondary branches in dendrites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 335, 30 April 2015, Pages 153-159
نویسندگان
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