Preparation of Pd/NH2−MIL−101(Fe)@ACF catalytic electrode and its green-Fenton performance

被引：0

作者：

Liu, Xinyu ^{[1
,2
]}

Cheng, Shiyu ^{[1
,2
]}

Zhang, Shaoqi ^{[1
,2
]}

Yang, Ling ^{[1
,2
]}

Zhang, Shiyue ^{[1
,2
]}

Wang, Fen ^{[1
,2
]}

Liu, Jinwei ^{[1
,2
]}

Li, Hua ^{[1
,2
]}

机构：

[1] Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, Beijing

[2] College of Life and Environmental Sciences, Minzu University of China, Beijing

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2025年 / 56卷 / 05期

基金：

中国国家自然科学基金;

关键词：

electro-catalysis; Fenton reaction; MOFs material; water pollution treatment;

D O I：

10.11817/j.issn.1672-7207.2025.05.005

中图分类号：

学科分类号：

摘要：

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 electrocatalyticFenton 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. © 2025 Central South University. All rights reserved.

引用

页码：1760 / 1772

页数：12

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