文献类型：期刊文献

中文题名：Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

作者：Shengshuo Xu[1];Zhenying Lu[1];Jinling Wang[1,2];Guangtuan Huang[1];Hualin Wang[1,2];Xuejing Yang[1,2]

机构：[1]National Engineering Laboratory for Industrial Wastewater Treatment,East China University of Science and Technology,Shanghai 200237,China;[2]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2023

卷号：17

期号：10

起止页码：1533

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：This work was partially supported by the National Key Projects for Fundamental Research and Development of China(Grant No.2019YFC1906700);the National Natural Science Foundation for Outstanding Young Scholars(Grant No.22222602);the National Natural Science Foundation of China(Grant No.21876049).

语种：英文

中文关键词：FeOCl;mechanical activation;heterogeneous Fenton reaction;ball milling

摘要：Iron oxychloride(FeOCl)is a unique layered material with tunable electronic properties.The conventional synthetic route of chemical vapor transition involves a thermodynamics-driven gas-solid interfacial reaction which often generates macroscopic crystals with stable facets.In this study,through analyzing the effects of the synthetic parameters on the FeOCl synthesis,we discovered the dominant contribution of theα-Fe_(2)O_(3)precursors on the chemical property of the FeOCl product,and subsequently developed a highly-controllable synthetic route of tailoring the FeOCl structures into small sizes and exposed high-energy facets via a facile and scalable mechanical-chemical approach.The synthesized products could be systematically tuned by the ball-milling conditions of theα-Fe_(2)O_(3)precursors.With increased milling time,the FeOCl crystallites demonstrated reduced sizes and more exposed(110)facets.Intriguingly,these smallsized FeOCl catalysts exhibited much faster Fenton-like kinetics than the pristine macroscopic FeOCl materials.Specifically,FeOCl catalysts with a 12-hour milling time showed nearly 39 times higher efficiency toward phenol degradation than the pristine FeOCl.The structure-reactivity relationship was further elucidated using the combinatory analysis via density functional theory calculation,electron paramagnetic resonance and radical quenching probe experiments.This work provides a rationale for tailoring the surface structures of FeOCl crystallites for potential applications in environmental catalysis.