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Dr. Mabrook S. Amer

Lecturer

Postdoc researcher

كلية العلوم
2A7, Building .5
المنشورات
مقال فى مجلة
2020

Enriched active surface structure in nanosized tungsten-cobalt oxides electrocatalysts for efficient oxygen redox reactions

AliSharb, Mabrook S.Amer, Prabhakarn Arunachalam, Mohamed A.Ghanem, Abdullah M.Al-Mayouf, Muhammad . 2020

Nanosized tungsten-cobalt oxide (WCoO-NP) electrodes were prepared using self-assembly template approach and their bifunctional electrocatalytic behaviour for the oxygen redox reactions was investigated. The texture, morphology, specific surface area, crystallinity, and electrocatalytic activity of the WCoO-NP were strongly associated with the W and Co content. The WCoO-NP materials contains 15 mol% of tungsten showed enhanced electrocatalytic behaviour, substantial shift in the OER onset potential of 190 mV, Tafel slope (92 mV/dec), ultra-low charge-transfer resistance, and current density of 30 mA cm−2 at 1.55 VRHE, which is more efficient catalyst than bare cobalt oxide nanoparticles (Co3O4-NP) counterpart and comparable to benchmark transition metal oxide electrocatalysts. The WCoO-NP materials exhibits long-term durability and good bifunctional electrocatalytic behaviour for both the OER and ORR, having ΔE (=EOER − EORR) of only 0.92 V which could be credited to the synergistic effect, enriched specific surface area, and improved electrical conductivity upon tungsten-doping. The WCoO-NP electrocatalysts prepared from earth-abundant materials are a promising candidate for high-efficiency OER and ORR applications.

 

 

نوع عمل المنشور
دكتوراه
مزيد من المنشورات
publications

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…

بواسطة Mabrook S Amer, Prabhakarn Arunachalam, Abdulaziz M.Alsalman, Abdullah MAl-Mayouf, Zeyad A.Almutairi, Saba A.Aladeemy, Mahmoud Hezam
2022
تم النشر فى:
Elsevier
publications

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…

بواسطة Mabrook S. Amer , Prabhakarn Arunachalam , Abdullah M. Al-Mayouf, Ahmad A. AlSaleh, Zeyad A. Almutairi
2023
تم النشر فى:
Elsevier
publications

 

بواسطة Hamid M. Ghaithan*, Saif M. H. Qaid*, Zeyad A. Alahmed*, Mahmoud Hezam, Andreas Lyras, Mabrook Amer, and Abdullah S. Aldwayyan*
2021