Surface molecular engineering of axial-exchanged Fe(III)Cl- and Mn(III)Cl-porphyrins towards enhanced electrocatalytic ORRs and OERs

[Display omitted] •Pyrene-pyridine (Pyr-Py) molecule was applied as the axial ligand.•Axially exchanged Fe(III) and Mn(III)porphyrin immobilized on rGO were prepared and characterized.•These functionalized nanocomposites revealed enhanced electrochemically catalyzed oxygen reductions and evolutions....

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Bibliographic Details
Published in:Inorganica Chimica Acta 2020-07, Vol.507, p.119584, Article 119584
Main Authors: Attatsi, Isaac Kwaku, Zhu, Weihua, Liang, Xu
Format: Article
Language:English
Subjects:
Electrocatalysis
Exchanging
Ligands
Manganese
Metalloporphyrin
Nanocomposites
Noncovalent immobilization
Oxygen evolution
Oxygen reduction
Porphyrins
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Summary:[Display omitted] •Pyrene-pyridine (Pyr-Py) molecule was applied as the axial ligand.•Axially exchanged Fe(III) and Mn(III)porphyrin immobilized on rGO were prepared and characterized.•These functionalized nanocomposites revealed enhanced electrochemically catalyzed oxygen reductions and evolutions. Herein, pyrene-pyridine (Pyr-Py) molecule was applied as the axial exchanged ligand to bridge Fe(III) and Mn(III)porphyrin immobilized on rGO. These axially exchanged metalloporphyrin functionalized nanocomposites revealed enhanced electrochemically catalyzed oxygen reductions and evolutions that demonstrated the surface molecular engineering through axial ligand exchange is an effective strategy to enhance the catalytic efficiency.
ISSN:0020-1693
1873-3255
DOI:10.1016/j.ica.2020.119584