A two-dimensional manganese-containing coordination polymer for efficient catalysis of the oxygen evolution

Shaista Ibrahim; Muhammad Mohsin Saleem; Muhammad Imran; Waqas Ali Shah; David.B. Cordes; Alexandra M. Z. Slawin; Muhammad Arif Nadeem

doi:10.2139/ssrn.4084592

A two-dimensional manganese-containing coordination polymer for efficient catalysis of the oxygen evolution

Shaista Ibrahim, Muhammad Mohsin Saleem, Muhammad Imran, Waqas Ali Shah, David.B. Cordes, Alexandra M. Z. Slawin, Muhammad Arif Nadeem^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The structural stability of coordination polymers is very important to act as efficient catalysts. A novel two dimensional manganese based coordination polymer [Mn₂(ox)(sqr)(dmso)₂]_n (Mn-CP) {ox = oxalate, sqr = squarate, dmso = dimethylsulfoxide} has been fabricated, keeping in consideration that the extensive delocalization of π-electron densities of both non-innocent redox active ligands will make a manganese an efficient oxygen-evolving centre by improving its poor intrinsic conductive nature. Mn-CP has displayed excellent OER performance at neutral pH, exhibiting a current density (J) of 10 mA/cm² at an overpotential (η) of 300 mV (vs. RHE), with a Tafel slope (TS) of 82.4 mV/dec in PBS (pH = 7.4). The enhanced water oxidizing ability can be credited to the unique two-dimensional planer-conducting layers of oxalates and squarates with Mn²⁺ ions. FT-IR, PXRD and controlled potential electrolysis (CPE) investigate that Mn-CP stays functional and structurally intact for a period of 10 hours.

Original language	English
Article number	121030
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	539
Early online date	1 Jun 2022
DOIs	https://doi.org/10.2139/ssrn.4084592 https://doi.org/10.1016/j.ica.2022.121030
Publication status	Published - 1 Sept 2022

Keywords

Manganese
Coordination polymer
Water oxidation
Overpotential
Tafel slope

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Copyright © 2022 Elsevier B.V. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.ica.2022.121030
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title = "A two-dimensional manganese-containing coordination polymer for efficient catalysis of the oxygen evolution",

abstract = "The structural stability of coordination polymers is very important to act as efficient catalysts. A novel two dimensional manganese based coordination polymer [Mn2(ox)(sqr)(dmso)2]n (Mn-CP) {ox = oxalate, sqr = squarate, dmso = dimethylsulfoxide} has been fabricated, keeping in consideration that the extensive delocalization of π-electron densities of both non-innocent redox active ligands will make a manganese an efficient oxygen-evolving centre by improving its poor intrinsic conductive nature. Mn-CP has displayed excellent OER performance at neutral pH, exhibiting a current density (J) of 10 mA/cm2 at an overpotential (η) of 300 mV (vs. RHE), with a Tafel slope (TS) of 82.4 mV/dec in PBS (pH = 7.4). The enhanced water oxidizing ability can be credited to the unique two-dimensional planer-conducting layers of oxalates and squarates with Mn2+ ions. FT-IR, PXRD and controlled potential electrolysis (CPE) investigate that Mn-CP stays functional and structurally intact for a period of 10 hours.",

keywords = "Manganese, Coordination polymer, Water oxidation, Overpotential, Tafel slope",

author = "Shaista Ibrahim and {Mohsin Saleem}, Muhammad and Muhammad Imran and {Ali Shah}, Waqas and David.B. Cordes and {M. Z. Slawin}, Alexandra and {Arif Nadeem}, Muhammad",

note = "Funding: The work was financially supported by the Higher Education Commission (HEC) of Pakistan (No. 8400/Federal/NRPU/R&D/HEC/2017). This work was also supported by Alexander von Humboldt (AvH) Foundation, Germany, for return fellowship (Ref 3.5 - 1161601 - PAK GFHERMES-P) awarded to M.A. Nadeem.",

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T1 - A two-dimensional manganese-containing coordination polymer for efficient catalysis of the oxygen evolution

AU - Ibrahim, Shaista

AU - Mohsin Saleem, Muhammad

AU - Imran, Muhammad

AU - Ali Shah, Waqas

AU - Cordes, David.B.

AU - M. Z. Slawin, Alexandra

AU - Arif Nadeem, Muhammad

N1 - Funding: The work was financially supported by the Higher Education Commission (HEC) of Pakistan (No. 8400/Federal/NRPU/R&D/HEC/2017). This work was also supported by Alexander von Humboldt (AvH) Foundation, Germany, for return fellowship (Ref 3.5 - 1161601 - PAK GFHERMES-P) awarded to M.A. Nadeem.

PY - 2022/9/1

Y1 - 2022/9/1

N2 - The structural stability of coordination polymers is very important to act as efficient catalysts. A novel two dimensional manganese based coordination polymer [Mn2(ox)(sqr)(dmso)2]n (Mn-CP) {ox = oxalate, sqr = squarate, dmso = dimethylsulfoxide} has been fabricated, keeping in consideration that the extensive delocalization of π-electron densities of both non-innocent redox active ligands will make a manganese an efficient oxygen-evolving centre by improving its poor intrinsic conductive nature. Mn-CP has displayed excellent OER performance at neutral pH, exhibiting a current density (J) of 10 mA/cm2 at an overpotential (η) of 300 mV (vs. RHE), with a Tafel slope (TS) of 82.4 mV/dec in PBS (pH = 7.4). The enhanced water oxidizing ability can be credited to the unique two-dimensional planer-conducting layers of oxalates and squarates with Mn2+ ions. FT-IR, PXRD and controlled potential electrolysis (CPE) investigate that Mn-CP stays functional and structurally intact for a period of 10 hours.

AB - The structural stability of coordination polymers is very important to act as efficient catalysts. A novel two dimensional manganese based coordination polymer [Mn2(ox)(sqr)(dmso)2]n (Mn-CP) {ox = oxalate, sqr = squarate, dmso = dimethylsulfoxide} has been fabricated, keeping in consideration that the extensive delocalization of π-electron densities of both non-innocent redox active ligands will make a manganese an efficient oxygen-evolving centre by improving its poor intrinsic conductive nature. Mn-CP has displayed excellent OER performance at neutral pH, exhibiting a current density (J) of 10 mA/cm2 at an overpotential (η) of 300 mV (vs. RHE), with a Tafel slope (TS) of 82.4 mV/dec in PBS (pH = 7.4). The enhanced water oxidizing ability can be credited to the unique two-dimensional planer-conducting layers of oxalates and squarates with Mn2+ ions. FT-IR, PXRD and controlled potential electrolysis (CPE) investigate that Mn-CP stays functional and structurally intact for a period of 10 hours.

KW - Manganese

KW - Coordination polymer

KW - Water oxidation

KW - Overpotential

KW - Tafel slope

U2 - 10.2139/ssrn.4084592

DO - 10.2139/ssrn.4084592

M3 - Article

SN - 0020-1693

VL - 539

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

M1 - 121030

ER -

A two-dimensional manganese-containing coordination polymer for efficient catalysis of the oxygen evolution

Abstract

Keywords

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