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Catalyzing towards clean energy: tuning the oxygen evolution reaction by amide-functionalized Co( ii ) and Ni( ii ) pristine coordination polymers

Authors :
Paul, Anup
Gusmão, Filipe
Mahmoud, Abdallah G.
Hazra, Susanta
Rakočević, Lazar
Šljukić, Biljana
Khan, Rais Ahmad
Guedes da Silva, Fatima
Pombeiro, Armando J. L.
Paul, Anup
Gusmão, Filipe
Mahmoud, Abdallah G.
Hazra, Susanta
Rakočević, Lazar
Šljukić, Biljana
Khan, Rais Ahmad
Guedes da Silva, Fatima
Pombeiro, Armando J. L.
Source :
CrystEngComm
Publication Year :
2024

Abstract

We present the synthesis and characterization of two monometallic coordination polymers, [Co(L)2(H2O)2]n (Co-CP) and [Ni(L)2(H2O)2]n (Ni-CP), alongside a heterobimetallic counterpart, CoNi-CP, derived from an amide-based multifunctional pro-ligand 4-(pyrimidin-5-ylcarbamoyl)benzoic acid (HL), and discussed their electrocatalytic activity in the oxygen evolution reaction (OER). The CPs were characterized using various techniques, including elemental analysis, IR spectroscopy, X-ray diffraction, and thermal and powder XRD analyses. The low-cost amide-functionalized transition metal pristine coordination polymers Co-CP and Ni-CP were demonstrated to catalyze the OER in alkaline media, surpassing the benchmark IrO2 electrocatalyst performance. The heterometallic coordination polymer (CoNi-CP) displayed a lower Tafel slope value (and thus, faster kinetics) and higher long-term durability compared to its monometallic counterparts, Co-CP and Ni-CP. The results obtained show a pristine transition metal heterobimetallic coordination polymer as a low-cost electrocatalyst of great promise and high performance for OER catalysis in alkaline media.

Details

Database :
OAIster
Journal :
CrystEngComm
Notes :
CrystEngComm
Publication Type :
Electronic Resource
Accession number :
edsoai.on1440510318
Document Type :
Electronic Resource