Strategies for enhancing the heterogeneous Fenton catalytic reactivity: A review

被引:917
作者
Zhu, Yanping [1 ,2 ,4 ,5 ]
Zhu, Runliang [1 ]
Xi, Yunfei [3 ,4 ,5 ]
Zhu, Jianxi [1 ]
Zhu, Gangqiang [6 ]
He, Hongping [1 ]
机构
[1] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] QUT, Sch Earth Environm & Biol Sci, Brisbane, Qld 4001, Australia
[4] QUT, Inst Future Environm, Brisbane, Qld 4001, Australia
[5] QUT, Sci & Engn Fac, Brisbane, Qld 4001, Australia
[6] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Heterogeneous Fenton reaction; Advanced oxidation processes; Fe(III)/Fe(II) recycling; Hydrogen peroxide; Hydroxyl radicals; ADVANCED OXIDATION PROCESSES; PERSISTENT FREE-RADICALS; WASTE-WATER TREATMENT; CORE-SHELL NANOWIRES; ACTIVATED PERSULFATE PROCESS; LIGHT-DRIVEN DEGRADATION; BISPHENOL-A DEGRADATION; DYE METHYL-ORANGE; HYDROXYL RADICALS; HYDROGEN-PEROXIDE;
D O I
10.1016/j.apcatb.2019.05.041
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Heterogeneous Fenton reactions have gained widespread attention in removing recalcitrant organic contaminants as the reaction between solid Fenton catalysts and H2O2 can generate highly reactive hydroxyl radicals (HO center dot). However, several drawbacks, such as the low-speed generation of Fe(II), high consumption of H2O2, and acidic reaction conditions (generally at (similar to) pH 3), are always the core issues that hamper the large-scale application of heterogeneous Fenton reactions in environmental remediation. Thus, a large number of studies have been devoted to tackling these drawbacks, and this paper intends to comprehensively review the developed strategies for enhancing heterogeneous Fenton reactivity, mainly over the last decade. Based on a comprehensive survey of previous studies, we categorize these strategies according to their reaction mechanisms. For example, introducing additional electrons (e.g., from external electric fields, electron-rich materials, semiconductors, plasmonic materials, or doped metals) to heterogeneous Fenton catalysts can accelerate the generation of Fe(II); the in situ generation of H2O2 can be achieved by combining ultrasound, electricity, semiconductors, and ironbased catalysts in the system; and controlling the specific morphologies and exposed facets of heterogeneous Fenton catalysts can greatly promote the decomposition of H2O2. In addition, we briefly introduce some recent novel heterogeneous Fenton-like reactions that are of particular interest, including constructing dual reaction centers (i.e., the electron-poor center and the electron-rich center) and synthesizing single-atom catalysis-based heterogeneous Fenton-like catalysts. Moreover, this review article analyzes and compares the merits of each strategy for enhancing heterogeneous Fenton/Fenton-like reactions. We believe this review can motivate the construction of novel and efficient heterogeneous Fenton/Fenton-like systems and help readers choose proper Fenton/Fenton-like reaction systems for industrial applications.
引用
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页数:16
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