Electrocatalytic Activity of Immobilized Co(II) on Porous Graphene Aerogels |
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| Authors: | Samira Bagheri Donya Ramimoghadam Negar Mansouri Sharifah Bee Abd Hamid |
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| Affiliation: | Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603 Kuala Lumpur, Malaysia |
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| Abstract: | The highly‐porous graphene aerogel (GA) with BET surface area of 810 m2 g?1 and three‐dimensional structure has been successfully fabricated using the hydrothermal technique. The modified glassy carbon electrode was then prepared by casting the graphene aerogel solution followed by immersing the GA/GCE in Co+2 solution. The results showed that graphene aerogels improved the adsorption ability of the Co (II) ions. The electrocatalysis of oxygen evolution reaction (OER) at the Co‐GA modified glassy carbon elec‐ trode (Co‐GA/GCE) has been investigated using linear sweep voltammetry (LSV) in alkaline solution. The OER was noticeably enhanced at Co‐GA/GCE, representing a negative shift in the LSV curve at the Co‐GA/GCE compared to that obtained at the bare GCE. The high electrocatalytic activity, good reproducibility and low cost of proposed electrode provides desired characteristics of a potential candi‐ date in the industrial water electrolysis process. |
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| Keywords: | Graphene aerogel Electrocatalyst Co(II) ions Oxygen evolution reaction Electrolysis |
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