Iron(iii) ion-assisted transformation of ZIF-67 to a self-supported FexCo-layered double hydroxide for improved water oxidation

Abstract

Herein, we have demonstrated Lewis acid Fe(iii)-assisted hydroxylation of ZIF-67 to form FexCo-layered double hydroxide (LDH) nanosheets. The catalyst Fe0.4Co-LDH produced an excellent water oxidation activity to reach a current density of 20 mA cm−2 at only 190 mV overpotential, superior to that of hydrothermally synthesized LDH with a similar composition. © 2023 The Royal Society of Chemistry