Understanding the role of surface oxygen-containing functional groups on carbon-supported cobalt catalysts for the oxygen evolution reaction

Pham, Thi Ha My; Ko, Youngdon; Wei, Manhui; Zhao, Kangning; Zhong, Liping; Züttel, Andreas

doi:10.1039/d3ta04077a

Cited by 5 publications

(1 citation statement)

References 67 publications

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“…The edge carbon of these clusters contains most of the oxygen, nitrogen, [93] sulfur, and hydrogen containing functional groups, although intercalated oxygen has also been reported [98]. The surface acidity/basicity of carbon is primarily governed by the presence of oxygen and nitrogenous functional groups [99,100]. According to Boehm's classification, functional groups can be categorized into acid, base, and neutral types [101].…”

Section: Functional Groups In Biocharmentioning

confidence: 99%

Sugarcane bagasse-based biochar and its potential applications: a review

Zafeer,

Menezes,

Venkatachalam

et al. 2023

emergent mater.

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The effective management of agro-industrial waste plays a pivotal role in mitigating various forms of pollution. Sugarcane bagasse (SB), a substantial biomass waste generated in the sugar industry after cane juice extraction, necessitates sustainable handling. Although some sugar mills utilize wet sugarcane bagasse for fueling the milling process, a significant portion remains stockpiled and is often incinerated on-site, resulting in a highly flammable biomass that poses significant risks to the industry and its surroundings. Recognizing the importance of addressing this issue, researchers have identified the conversion of agricultural waste into biochar as an efficient means of harnessing energy following biomass devolatilization. There is scientific interest in the transformation of biomass into value-added products, including biochar, biogas, and biofuel. This comprehensive literature review delves into various pyrolysis processes applicable for converting sugarcane bagasse into char materials, showcasing its potential for diverse applications in line with current scientific interests. Graphical Abstract

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Section: Functional Groups In Biocharmentioning

confidence: 99%

Sugarcane bagasse-based biochar and its potential applications: a review

Zafeer,

Menezes,

Venkatachalam

et al. 2023

emergent mater.

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Efficient Oxygen Evolution Reaction on Catalyst‐Free Acid‐Functionalized Plastic Chip Electrodes

Kirti,

Bani,

T. V.

et al. 2024

Energy Tech

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Innovative electrode design is critical for improving the oxygen evolution reaction (OER) and meeting rising global energy demands. Despite the development of numerous carbon materials for water splitting, their potential is hampered by sluggish kinetics, primarily due to high activation energy compounded by various smaller factors, including additives or binders used in electrode modification. To address these limitations, a catalyst‐free plastic chip electrode (PCE) for OER is developed. PCE is functionalized by oxidizing it in acidic media at 1.8 V versus Ag/AgCl and eliminates the need for additives, offering a more accurate industrial representation. The oxidation process enhances the electrode's surface area and introduces electrochemically active oxygen‐containing functional groups. Characterization of the modified PCE is conducted using scanning electron microscope, X‐ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X‐ray diffraction, Raman, and thermogravimetric analysis, while electrolyte analysis utilizes UV–vis spectroscopy and NMR. The PCE oxidized for 6 h (PCE@6) demonstrates improved OER performance, with an onset overpotential of 260 mV, an overpotential of 1.06 V versus reversible hydrogen electrode at 10 mA cm−2, and a Tafel slope of 494 mV decade−1. The modified PCE reduces overpotential and minimizes bubble formation, enhancing efficiency and showcasing its potential as a cost‐effective solution for alkaline water electrolysis systems.

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Effect of I- ligand and surface oxygen-containing groups on catalytic activity and stability of activated carbon-supported Pd catalysts in acetylene dicarbonylation

Liu,

Yang,

Wang

et al. 2024

Fuel

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Understanding the role of surface oxygen-containing functional groups on carbon-supported cobalt catalysts for the oxygen evolution reaction

Abstract: Supported Co-based catalysts exhibit promising catalytic activities in oxygen evolution reaction (OER) during alkaline water electrolysis. Surface functionalization of the support modulates the dispersion of the catalysts and their interaction...

Cited by 5 publications

References 67 publications

Sugarcane bagasse-based biochar and its potential applications: a review

Sugarcane bagasse-based biochar and its potential applications: a review

Efficient Oxygen Evolution Reaction on Catalyst‐Free Acid‐Functionalized Plastic Chip Electrodes

Effect of I- ligand and surface oxygen-containing groups on catalytic activity and stability of activated carbon-supported Pd catalysts in acetylene dicarbonylation

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