中南大学学报（自然科学版）2025，Vol.56Issue(5)：1760-1772,13.DOI:10.11817/j.issn.1672-7207.2025.05.005
Pd/NH2-MIL-101(Fe)@ACF催化电极的制备及其绿色Fenton性能
Preparation of Pd/NH2-MIL-101(Fe)@ACF catalytic electrode and its green-Fenton performance
摘要
Abstract
To address the issues of narrow pH applicability(pH≈3)and iron sludge precipitation in traditional homogeneous Fenton systems,a novel green Fenton catalytic system was proposed with metal-organic frameworks(MOFs).Firstly,four Fe-MOFs@ACF electrodes(MIL-53,NH2-MIL-53,MIL-101,NH-MIL-101)were fabricated by using activated carbon fiber(ACF)as a substrate through solvothermal and liquid-phase reduction methods.Secondly,the NH2-MIL-101(Fe)@ACF electrode,exhibiting optimal catalytic performance,was selected as the base for further deposition of uniformly dispersed Pd nanoparticles.Thirdly,an electrocatalytic-Fenton system was constructed by using methylene blue(MB)as a model pollutant.The effects of voltage(-1.5-0 V),pH(2-10),and H2O2 dosage(255-765 μL)on degradation efficiency were systematically investigated.The results show that MB can be completely degradated within 60 min under optimized conditions(-0.8 V,pH=2,510 μL H2O2).This system significantly broadens the applicable pH range(2-6)by in situ catalytic generation of H2O2 from water and oxygen at the cathode,followed by efficient decomposition into reactive oxygen species×OH.The Pd/NH2-MIL-101(Fe)@ACF electrode maintains over 90%degradation efficiency after three consecutive cycles,showcasing excellent stability.关键词
Fenton反应/MOFs材料/电催化/水污染处理Key words
Fenton reaction/MOFs material/electro-catalysis/water pollution treatment分类
通用工业技术引用本文复制引用
刘鑫宇,成施雨,张劭琦,杨灵,张世月,王粉,刘金炜,李华..Pd/NH2-MIL-101(Fe)@ACF催化电极的制备及其绿色Fenton性能[J].中南大学学报（自然科学版）,2025,56(5):1760-1772,13.基金项目
国家自然科学青年基金资助项目(22208004) （22208004）
国家民委重点实验室自主课题(KLEEMA202302)(Project(22208004)supported by the National Natural Science Foundation of China （KLEEMA202302）
Project(KLEEMA202302)supported by the Independent Project of the Key Laboratory of the State Ethnic Affairs Commission) （KLEEMA202302）
