2018
DOI: 10.3762/bjnano.9.185
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Synthesis of a MnO2/Fe3O4/diatomite nanocomposite as an efficient heterogeneous Fenton-like catalyst for methylene blue degradation

Abstract: Heterogeneous Fenton-like catalysts with the activation of peroxymonosulfate (PMS), which offer the advantages of fast reaction rate, wide functional pH range and cost efficiency, have attracted great interest in wastewater treatment. In this study, a novel magnetic MnO2/Fe3O4/diatomite nanocomposite is synthesized and then used as heterogeneous Fenton-like catalyst to degrade the organic pollutant methylene blue (MB) with the activation of PMS. The characterization results show that the Fe3O4 nanoparticles an… Show more

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Cited by 45 publications
(22 citation statements)
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“…Advanced oxidation processes (AOPs), based on the generation of highly reactive oxygen species [e.g., hydroxyl radical ( Á OH), superoxide anion radical (O 2 Á-), sulfate radical (SO 4 Á-), and singlet oxygen ( 1 O 2 )], have attracted much attention because it can achieve complete mineralization and degradation of organic pollutants instead of simple separation [2][3][4].…”
Section: Introductionmentioning
confidence: 99%
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“…Advanced oxidation processes (AOPs), based on the generation of highly reactive oxygen species [e.g., hydroxyl radical ( Á OH), superoxide anion radical (O 2 Á-), sulfate radical (SO 4 Á-), and singlet oxygen ( 1 O 2 )], have attracted much attention because it can achieve complete mineralization and degradation of organic pollutants instead of simple separation [2][3][4].…”
Section: Introductionmentioning
confidence: 99%
“…Generally, activating PMS to produce reactive oxygen species requires energy input in the form of light [6], heat [7] and ultrasound [8] [as presented in Eq. 1], or catalytic reaction from catalysts [4,9], and so on. Among the developed activation methods, transitional metal-containing catalysts (e.g., M = Ag, Fe, Mn, Co, and V) were considered as promising routes without energy inputs [as presented in Eq.…”
Section: Introductionmentioning
confidence: 99%
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“…Through extensive research on the removal of various organic pollutants, many treatment methods have been developed, such as physical methods (adsorption, coagulation, and membrane separation), chemical methods (ozone oxidation, electrochemical and wet oxidation, and advanced catalytic oxidation), and biological methods (aerobic biological treatment, anaerobic biological treatment, and anaerobic-aerobic combined biological treatment) [5][6][7]. Among these methods, advanced oxidation process (AOP) is considered to be the most promising method because of its high removal efficiency and wide range of applications [8].…”
Section: Introductionmentioning
confidence: 99%
“…Liu's group catalyzed PMS by supporting Fe 3 O 4 nanoparticles and nanoflower-like MnO 2 layer by layer on the surface of porous diatomite or silica nanofiber. The high specific area of the core-shell nanocomposites made it easier for PMS and organic pollutants to contact with the catalysts, and the synergistic effect between MnO 2 and Fe 3 O 4 increased the activation performance of the catalysts [8,19,20]. Huang's group reported iron-copper bimetal doped mesoporous g-Al 2 O 3 catalyzed PMS to effectively degrade 4-chlorophenol, finding that the Al-O-Fe and Al-O-Cu bonds formed by Fe and Cu doping into the framework of g-Al 2 O 3 were the key structures for high activity of the catalyst [21].…”
Section: Introductionmentioning
confidence: 99%