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Citation: PENG Xie-Lan, XIE Qing-Ji, KANG Qing, YAO Shou-Zhuo. EQCM Study on the Electrodeposition of Hydroxides in Hydrated Perchlorate + Organic Solvent Systems[J]. Acta Physico-Chimica Sinica, ;2006, 22(11): 1361-1366. doi: 10.1016/S1872-1508(06)60068-5 shu

EQCM Study on the Electrodeposition of Hydroxides in Hydrated Perchlorate + Organic Solvent Systems

1.
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P. R. China

Received Date: 23 May 2006
Available Online: 6 November 2006

The electrochemical quartz crystal microbalance (EQCM) method was used to quantitatively examine the precipitation of LiOH (or NaOH) onto a ld electrode at potentials negative to ca −0.8 V (vs SCE) during the cathodic sweep reduction of dissolved oxygen and coexisting water in acetone, DMF, DMSO, C2H5OH, or CH3OH containing hydrated perchlorate, as a result of the poor solubility of electrogenerated hydroxide in the nonaqueous medium. In contrast, the EQCM response indicative of precipitate adherence was negligibly small, when tetrabutyl ammonium bromide was used as supporting electrolyte. Effects of electrolyte and its concentration, solvent, and water content on the electrodeposition of hydroxide were discussed, and the electrode-collection efficiency for the precipitate was evaluated.
- EQCM study on nonaqueous systems;Acetone;Hydrated perchlorate;Reduction of dissolved oxygen and coexisting water;LiOH (or NaOH) electrodeposition
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