Enhanced Photoelectrochemical Water Oxidation Using TiO₂-Co₃O₄ p-n Heterostructures Derived from in Situ-Loaded ZIF-67.

ABSTRACT: Exposing catalytically active metal sites in metal-organic frameworks (MOFs) while maintaining porosity is beneficial for increasing electron transport to achieve better electrochemical energy conversion performance. Herein, we propose an in situ method for MOF formation and loading onto TiO₂ nanorods (NR) using a simple solution-processable method followed by annealing to obtain TiO₂-Co₃O₄. The as-prepared TiO₂-ZIF-67 based photoanodes were annealed at 350, 450, and 550 °C to study the effect of carbonization on photo-electrochemical water oxidation. The successful loading of ZIF-67 on TiO₂ and the formation of TiO₂-Co₃O₄ heterojunction were confirmed by XRD, XPS, FE-SEM, and HRTEM analyses.

SUBMITTER: Thanh Thu CT 

PROVIDER: S-EPMC10420101 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature