Graphene-based catalysts for carbon monoxide oxidation: Experimental and theoretical insights

• Published in: International journal of hydrogen energy 2023-05, Vol.48 (46), p.17434-17467
• Main Authors: Ipadeola, Adewale K., Chitt, Mira, Abdelgawad, Ahmed, Eid, Kamel, Abdullah, Aboubakr M.
• Format: Article
• Language: English
• Subjects: Catalytic CO oxidation; Density functional theory; Graphene-based catalysts; Metal on graphene; Pt/graphene
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2023.01.208

Graphene-based catalysts are important in various applications ranging from hydrogen production to fuel cells and gas conversion reactions, due to their high surface area, low density, great mechanical properties, and rich electron density. Carbon monoxide oxidation (CO) is among the hottest research themes, due to its significant role in fundamental industrial, and environmental remediation applications. Graphene-based catalysts are highly promising for CO oxidation, due to their accessible surface area, low-cost, and ease of preparation. However, to the best of our knowledge, there are no review papers on graphene-based catalysts for CO oxidation. Therefore, it is important to provide a timely update on this area of research. This review provides a brief synopsis of the relevant milestones and highlights of graphene-based catalysts for experimental and theoretical CO oxidation reaction. This includes self-standing, doped, and metal nanoparticles supported graphene rooting from the preparation methods to the thermal CO oxidation and their related parameters and mechanisms. The CO oxidation reaction fundamentals (i.e., measurements, calculations, and mechanisms) and the effects of CO on the environment are also highlighted. Finally, the current challenges and drawbacks are discussed for further deployment of novel graphene-based catalysts for efficient CO oxidation under ambient conditions. [Display omitted] •Fundamental, mechanism, and education pathway of catalytic CO oxidation.•Fabrication of graphene doped with non-metal or metal atoms for CO oxidation.•Synthesis of graphene functionalized with non-metal or metal atoms for CO oxidation.•Emphasizing the role of graphene as a support or promoter during the CO oxidation.•The current challenges and outlook of graphene-based catalysts for CO oxidation.