TY - JOUR
T1 - Catalyzing towards clean energy
T2 - tuning the oxygen evolution reaction by amide-functionalized Co(ii) and Ni(ii) pristine coordination polymers
AU - Paul, Anup
AU - Gusmão, Filipe
AU - Mahmoud, Abdallah G.
AU - Hazra, Susanta
AU - Rakočević, Lazar
AU - Šljukić, Biljana
AU - Khan, Rais Ahmad
AU - Guedes da Silva, M. Fátima C.
AU - Pombeiro, Armando J.L.
N1 - Publisher Copyright:
© 2024 The Royal Society of Chemistry.
PY - 2024/4/25
Y1 - 2024/4/25
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85193541766
U2 - 10.1039/d4ce00179f
DO - 10.1039/d4ce00179f
M3 - Article
AN - SCOPUS:85193541766
SN - 1466-8033
VL - 26
SP - 2755
EP - 2764
JO - CrystEngComm
JF - CrystEngComm
IS - 21
ER -
