|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Minerals Extraction and Processing
||Preparation Conditions and Performance of Nano/Amorphous Hybrid Oxide Coated Titanium Anode for Oxygen Evolution in Electrowinning
|On-Site Speaker (Planned)
This paper reports the novel preparation conditions of nano/amorphous hybrid structure of RuO<sub>2</sub>-Ta<sub>2</sub>O<sub>5</sub> coated titanium anodes and their performance on oxygen evolution in acidic aqueous solutions for metal electrowinning. The hybrid structure depends on the thermal decomposition temperature and time of the precursor solution containing Ru(III) and Ta(V), and nano RuO<sub>2</sub> particles dispersed in amorphous Ta<sub>2</sub>O<sub>5</sub> matrix are obtained in certain conditions. The hybrid oxide coated titanium anode shows excellent catalytic activity for oxygen evolution, resulting in a significant reduction in oxygen overpotential. This paper also presents the details of surface morphology of the oxide coating and the relationship between the preparation conditions and the morphological features.
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