Chemical Engineering Research Activities

Synthesis and applications of Nano- Fluids, Lead Dioxide


Synthesis and applications of nano-PbO2:

PbO2 clearly emerges as an attractive material used as an anode for a direct oxidation of organic compounds due to its high oxygen-evolution potential, low price, relative stability under the high positive potentials required, stability at high temperatures and ease of preparation. Its high over potential for O2 evolution allows the application of potentials to about 2.0 V versus a saturated calomel electrode (SCE) in an acidic medium without vigorous O2 evolution. The PbO2 electrodes have some disadvantages, i.e., they corrode at high rates under reducing conditions and in some acids, and they have poor mechanical properties. Its composites with various oxides (e.g., Al2O3, RuO2, and TiO2) are known4 for a high catalytic activity and stability. Among many ways of preparation, such as the sol-gel technology, the plasma-chemical method, etc., the electrochemical synthesis is the most promising method, easy to implement, allowing the technological parameters to be varied smoothly for a better control of the composition and properties of the resulting composites.

The sustainable electrodes are utilized to use as an anode material for the applications of dye degradation, redox flow battery, sensors and super-capacitors.