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- Title
MXene assisted solvent-free synthesis of a hybrid Fe/TiO<sub>2</sub>/ZSM-5 catalyst for phenol degradation.
- Authors
Ji, Fei; Zhang, Changquan
- Abstract
Photocatalysis is a focal point for clean, sustainable technologies for organic contaminant degradation. To overcome the defect of low catalytic efficiency and avoid hydrothermal synthesis of ZSM-5 zeolite-based catalysis, MXene and Fe were used to assist solvent-free synthesis of a hybrid Fe/TiO2/ZSM-5 catalyst. The research proved that Fe3+ and Ti3C2Tx nanosheets retard the crystallization of ZSM-5 zeolite under solvent-free conditions and micro–meso bimodality of pore size exist in 5%MXene/ZSM-5 and 5%Fe/5%MXene/ZSM-5. Fe/TiO2 heterostructures improved the oxygen vacancy prevalence of 5%Fe/5%MXene/ZSM-5 compared to 5%Fe/ZSM-5, 5%MXene/ZSM-5 and ZSM-5 while successfully reducing the band gap of 5%Fe/5%MXene/ZSM-5 to 2.26 eV. Meanwhile, the concentrations of free radicals increased with reaction time, with 1O2 and O2− playing dominant roles in phenol degradation in the Fe/TiO2/ZSM-5-PMS system, and the phenol removal efficiency reached 82% in a 25-min period under simulated solar illumination. This investigation of PMS activation by Fe–MXene-modified ZSM-5 zeolite paves the way for the design of cost-effective and highly efficient heterogeneous catalysts for phenol degradation.
- Subjects
PHENOL; FREE radical reactions; HETEROGENEOUS catalysts; ZEOLITES; CATALYSTS; BAND gaps; HYDROTHERMAL synthesis
- Publication
Research on Chemical Intermediates, 2024, Vol 50, Issue 2, p789
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-023-05202-4