4f-2p-3d orbital overlap in a metal-organic framework-derived CeO2/CeCo-LDH heterostructure promotes water oxidation

Priyanka Maurya; Toufik Ansari; Arindam Indra

doi:10.1039/d3cc03988a

4f-2p-3d orbital overlap in a metal-organic framework-derived CeO₂/CeCo-LDH heterostructure promotes water oxidation

Chem Commun (Camb). 2023 Nov 7;59(89):13359-13362. doi: 10.1039/d3cc03988a.

Authors

Priyanka Maurya¹, Toufik Ansari¹, Arindam Indra¹

Affiliation

¹ Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP 221005, India. arindam.chy@iitbhu.ac.in.

PMID: 37873625
DOI: 10.1039/d3cc03988a

Abstract

Herein, we have demonstrated a facile method for the synthesis of CeO₂/Ce-Co-LDH heterostructures using zeolitic imidazolate framework-67 as the precursor. The Ce-incorporation in Co-LDH results in 4f-2p-3d orbital overlap to tune the electronic structure whereas the oxygen-deficient CeO₂ controls the interface charge transfer. This results in excellent water oxidation activity to attain 500 mA cm^-2 current density at 320 overpotential.