Synthesis of iron and vanadium co‐doped mesoporous cobalt oxide: An efficient and robust catalysts for electrochemical water oxidation
Mayouf, Mabrook S. Amer Prabhakarn Arunachalam Mohamed A. Ghanem Matar Al‐Shalwi Ashfaq Ahmad Abdulrahman I. Alharthi Abdullah M. Al‐ . 2021
Dual metal doping and optimization are considered as vital approaches for enhancing the electrocatalytic features toward oxygen evolution reaction. Herein, a sequence of Fe and V dual metal‐doped mesoporous cobalt oxide (FeV/meso‐Co) electrocatalysts was successfully synthesized through citric acid‐assisted evaporation‐induced self‐assembly (EISA) method. The textural, morphological, crystallinity, and electrochemical activities of Fe/V‐promoted meso‐Co (124 m2/g) are found strongly associated with dual (Fe and V) metal concentration. Benefiting from the combined effect of FeV‐doping, the FeV/meso‐Co exhibited an extremely lower overpotential of 280 mV to reach 10 mA/cm2 for oxygen evolution reaction (OER) in 1M KOH electrolyte, which was the considerably lowest value among the earlier catalysts, and the FeV/meso‐Co showed similar features as IrO2 electrodes. Furthermore, FeV/meso‐Co electrodes display highly durable (>30 hours) electrocatalytic performance for OER. This inexpensive approach of producing transition dual metal‐doped mesoporous materials offers excellent promise for fabricating efficient catalysts and other electrochemical energy‐conversion devices.
The development of greatly stable and cost-effective electrocatalysts for urea electro-oxidation reactions (UERs) is urgent and challenging for promoting urea removal in the wastewater and…
Developing more active and stable electrode materials for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is necessary for electrocatalytic water and urea oxidation which can be…