Hollow NiCo2O4-ZnO-Co3O4-/N-C Micro-Cage for Synergistic Bisphenol A Degradation by Activating Persulfate

Jiao Wang; Mengfan Wang; Bastien Leger; Anne Ponchel; Lei Bai

doi:10.1021/acs.inorgchem.3c01698

Hollow NiCo₂O₄-ZnO-Co₃O₄-/N-C Micro-Cage for Synergistic Bisphenol A Degradation by Activating Persulfate

Inorg Chem. 2023 Aug 7;62(31):12493-12500. doi: 10.1021/acs.inorgchem.3c01698. Epub 2023 Jul 27.

Authors

Jiao Wang¹, Mengfan Wang², Bastien Leger³, Anne Ponchel³, Lei Bai²

Affiliations

¹ College of Food Engineering, Anhui Science and Technology University, Fengyang, Anhui 233100, China.
² College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, Anhui 233030, China.
³ Université d'Artois, CNRS, Centrale Lille, Université de Lille, UMR 8181, Unité de Catalyse et de Chimie du Solide (UCCS), F-62300 Lens, France.

PMID: 37499062
DOI: 10.1021/acs.inorgchem.3c01698

Abstract

The NiCo₂O₄-ZnO-Co₃O₄-/N-C micro-cage was successfully synthesized by calcination of the precursor obtained from a hollow ZIF-8/ZIF-67 with nickel nitrate. The preparation process concerning ion exchange and leaching was illustrated by the investigation of the composition and structure of the composites. As a catalyst for the activation of persulfate (PDS) to degrade bisphenol A (BPA), it was discovered that the BPA degradation in the presence of NiCo₂O₄-Co₃O₄-ZnO/N-C was more efficient than the solids obtained by ZIF-67 with nickel nitrate, indicated by the sevenfold increase of the apparent reaction rate. The further electrochemical analysis evidenced that the electron transfer was more easily accomplished in the system of BPA-PDS-NiCo₂O₄-Co₃O₄-ZnO/N-C. This enhanced activity of NiCo₂O₄-Co₃O₄-ZnO/N-C was mainly due to the hollow structure, the synergistic effect of NiCo₂O₄, as well as the smaller size of the active species, which facilitated the transportation of molecules and ions as well as the activation of PDS.