Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6616125 | Electrochimica Acta | 2013 | 8 Pages |
Abstract
The electrodeposition of rhenium and rhenium oxides from an alkaline aqueous solution containing 0.125 mol dmâ3 NH4ReO4 + 0.01 mol dmâ3 NaOH (pH 13.3 ± 0.1) has been studied. Cyclic voltammetry studies were carried out using two electrodes, polycrystalline platinum and polycrystalline gold, and the galvanostatic electrodeposition was conducted on a pure copper electrode (99.9%). Information regarding rhenium electrodeposits has been obtained by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The experimental results in an alkaline aqueous electrolyte suggest that the electrocrystallization process follows a multi-step mechanism influenced by hydrogen adsorption. The main conclusion was that rhenium, rhenium (IV) oxide and rhenium (VI) oxide coexist in the electrodeposited material.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Alejandro Vargas-Uscategui, Edgar Mosquera, Luis Cifuentes,