کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
189507 459680 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrodeposition of CdS from acidic aqueous thiosulfate solution—Invesitigation of the mechanism by electrochemical quartz microbalance technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrodeposition of CdS from acidic aqueous thiosulfate solution—Invesitigation of the mechanism by electrochemical quartz microbalance technique
چکیده انگلیسی

Electrochemical quartz crystal microbalance was used to study mechanism of cathodic electrodeposition of CdS from acidic aqueous solutions containing 0.01 M Cd(ClO4)2 and 0.1 M Na2S2O3 as a source of sulfur. Experiments were performed by means of cyclic voltammetry and potentiostatic method. A comparison of gravimetric and current responses at pH 3 and 4 allowed for determination of the potential range in which side reactions of reduction of SO32− and H+ ions compete most strongly with formation of CdS. The film thickness was determined by means of two methods: from AFM profiles and EQCM measurements.


► Cathodic electrodeposition of CdS from acidic thiosulfate solution occurs via EC mechanism.
► H2S formed by electrochemical reduction of colloidal sulfur reacts with Cd2+ ion.
► The same mechanism is observed at pH 3 and 4.
► Relationship between deposition charge and film thickness was determined from EQCM and AFM experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 16, 30 June 2011, Pages 5731–5739
نویسندگان
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