Pd/UiO‐66(Zr)‐2OH as a High‐Performance Catalyst for Hydrogen‐Enhanced Fenton Oxidation of Trimethoprim

作者：Q Qi Chen, Xin‐Hao Shen, Y. J. Wang, Ying Gao, Feng Liu, Jian‐Hua Wu, Xiaowen Wang, Long Yi Jin, San‐Jian Ma, Juanhong Li, Zixia Lin, Hongwei Yang, Xin Liu · 发表于：Applied Organometallic Chemistry · 年份：2024 · DOI：10.1002/aoc.7872 · 被引用次数：4 · 研究领域：Advanced oxidation water treatment、Advanced battery technologies research、Electrocatalysts for Energy Conversion

ABSTRACT A novel catalyst material named Pd/UiO‐66(Zr)‐2OH was successfully developed and applied in a hydrogen‐promoted Fenton system for the efficient catalytic oxidation of the widely used antibiotic trimethoprim (TMP). The UiO‐66(Zr)‐2OH, as the carrier of catalyst in this work, was synthesized through a solvothermal method. The Pd 0 nanoparticle, as the active center of the catalyst, was loaded onto its surface by the “ship‐in‐a‐bottle” strategy. The results showed that the composite Pd/UiO‐66(Zr)‐2OH demonstrated excellent catalytic performance during the reaction, achieving over 97% of TMP removal efficiency within 180 min under optimal conditions under the condition of only trace of iron without adding H 2 O 2 . This may be attributed to the fact that the [H], as a clean and efficient reducing agent, can be utilized to accelerate the regeneration of Fe 2+ in the Fenton reaction, as well as in the in‐situ regeneration of H 2 O 2 . The key parameters affecting the removal efficiency of TMP, including the initial pH and concentration of Fe 2+ , the dosage of the synthesized material, the flow rate of H 2 and the stirring speed were investigated systematically. The Pd/UiO‐66(Zr)‐2OH exhibited high stability and reusability, maintaining over 82% of its initial degradation efficiency of TMP after six reaction cycles. The mechanistic insight revealed that the system primarily relied on the generation of hydroxyl radical (·OH) and singlet oxygen ( 1 O 2 ) for the degradation ...