Enhancing Oxygen Evolution Reaction Activity through Linker Functionalization in Manganese‐Based Metal‐Organic Frameworks (Mn‐MOFs) DOI Creative Commons

Arslan Akbar,

Irfan Ullah,

S. Arshad

et al.

ChemElectroChem, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Developing efficient and durable electrocatalysts for oxygen evolution reaction (OER) remains a critical bottleneck economic large‐scale production of green hydrogen. Metal‐organic frameworks (MOFs) with their unique structural tunability, redox properties, high surface area have emerged as promising candidates the OER process. In this work, presentation on how linker functionalization in rather unexplored manganese‐based MOFs leads to enhanced activity is given. A series rarely reported MIL‐88B structure (Mn‐MIL‐88‐X) synthesized using functionalized linkers [X = NH 2 , NO Br]. The objective modulate electronic hydrophilicity leading activity. Among MOFs, Mn‐MIL‐88‐NH shows remarkable performance, requiring only 260 mV overpotential reach current density 10 mA cm − small Tafel slope 73 dec 1 . improvement ascribed higher oxidation states manganese (Mn 3 + /Mn 4 ) presence amino group (‐NH confirmed through X‐ray photoelectron spectroscopy (XPS). This work paves way designing exploring mixed‐valence state metal‐based advanced electrode materials electrocatalysis.

Language: Английский

Enhancing Oxygen Evolution Reaction Activity through Linker Functionalization in Manganese‐Based Metal‐Organic Frameworks (Mn‐MOFs) DOI Creative Commons

Arslan Akbar,

Irfan Ullah,

S. Arshad

et al.

ChemElectroChem, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Developing efficient and durable electrocatalysts for oxygen evolution reaction (OER) remains a critical bottleneck economic large‐scale production of green hydrogen. Metal‐organic frameworks (MOFs) with their unique structural tunability, redox properties, high surface area have emerged as promising candidates the OER process. In this work, presentation on how linker functionalization in rather unexplored manganese‐based MOFs leads to enhanced activity is given. A series rarely reported MIL‐88B structure (Mn‐MIL‐88‐X) synthesized using functionalized linkers [X = NH 2 , NO Br]. The objective modulate electronic hydrophilicity leading activity. Among MOFs, Mn‐MIL‐88‐NH shows remarkable performance, requiring only 260 mV overpotential reach current density 10 mA cm − small Tafel slope 73 dec 1 . improvement ascribed higher oxidation states manganese (Mn 3 + /Mn 4 ) presence amino group (‐NH confirmed through X‐ray photoelectron spectroscopy (XPS). This work paves way designing exploring mixed‐valence state metal‐based advanced electrode materials electrocatalysis.

Language: Английский

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