ArticleACS applied materials & interfaces2023
Speciation of Oxygen Functional Groups on the Carbon Support Controls the Electrocatalytic Activity of Cobalt Oxide Nanoparticles in the Oxygen Evolution Reaction.
Article in ACS applied materials & interfaces, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 43 citations in OpenAlex.
- Irradiation-Induced Structural Evolution and Functional Applications of Carbon-Based Materials: A Review.Nanomaterials (Basel, Switzerland) · 2026Review
- Plasma Functionalization of Carbon-Based Materials for Electrocatalytic Applications.Materials (Basel, Switzerland) · 2026Review
- Article
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- Aptamer-Based Planar Electric Double-Layer Field-Effect Transistor: A Novel Approach for Sensitive Troponin I Sensing.Biosensors · 2025Article
- Maximising the Potential of Reactive Carbon Support with Cobalt Active Phase for the Oxygen Evolution Reaction.Molecules (Basel, Switzerland) · 2025Article
- Enhancing Graphene Nanoplatelet Reactivity through Low-Temperature Plasma Modification.ACS applied materials & interfaces · 2024Article
- CoNanomaterials (Basel, Switzerland) · 2023Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
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Abstract
The effective use of the active phase is the main goal of the optimization of supported catalysts. However, carbon supports do not interact strongly with metal oxides, thus, oxidative treatment is often used to enhance the number of anchoring sites for deposited particles. In this study, we set out to investigate whether the oxidation pretreatment of mesoporous carbon allows the depositing of a higher loading and a more dispersed cobalt active phase. We used graphitic ordered mesoporous carbon obtained by a hard-template method as active phase support. To obtain different surface concentrations and speciation of oxygen functional groups, we used a low-temperature oxygen plasma. The main methods used to characterize the studied materials were X-ray photoelectron spectroscopy, transmission electron microscopy, and electrocatalytic tests in the oxygen evolution reaction. We have found that the oxidative pretreatment of mesoporous carbon influences the speciation of the deposited cobalt oxide phase. Moreover, the activity of the electrocatalysts in oxygen evolution is positively correlated with the relative content of the COO-type groups and negatively correlated with the C═O-type groups on the carbon support. Furthermore, the high relative content of COO-type groups on the carbon support is correlated with the presence of well-dispersed Co
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