Fe/Mn nanoparticles encapsulated in nitrogen-doped carbon nanotubes as a peroxymonosulfate activator for acetamiprid degradation

Duan, Pijun; Ma, Tengfei; Yue, Yue; Li, Yanwei; Xu, Xing; Shang, Yi; Gao, Baoyu; Zhang, Qingzhu

doi:10.1039/c9en00220k

Cited by 181 publications

(43 citation statements)

References 53 publications

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“…The electrode kinetics and interface reactions to these three catalysts can be further studied by EIS (Duan et al 2019). It can be clearly seen from Fig.…”

Section: Mechanism Of Persulfate Activationmentioning

confidence: 99%

Persulfate Activation by Ferrocene-based Metal-organic Framework Microspheres for Efficient Oxidation of Organic Pollutants

Leng

Wang

et al. 2021

Preprint

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Ferrocene-based metal-organic framework with different transition metals (M-Fc-MOFs, M=Fe, Mn, Co) were synthesized by a simple hydrothermal method and used as a heterogeneous catalyst for persulfate activation. The samples were characterized by X-ray diffraction, transmission electron microscopy, X-ray electron spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. Meanwhile, the influences of factors such as catalyst dosage, persulfate concentration and pH on the degradation of acid orange 7 (AO7) were studied in detail. The results showed that hollow cobalt-based ferrocenyl metal-organic framework microspheres (Co-Fc-MOFs) exhibited the best catalytic performance, which is closely related to the synergy of Fc/Fc+ and Co2+/Co3+ cycles in persulfate activation. Free radical quenching studies indicated that both sulfate and hydroxyl appeared to contribute to the degradation of AO7.

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“…The electrode kinetics and interface reactions to these three catalysts can be further studied by EIS (Duan et al 2019). It can be clearly seen from Fig.…”

Section: Mechanism Of Persulfate Activationmentioning

confidence: 99%

Persulfate Activation by Ferrocene-based Metal-organic Framework Microspheres for Efficient Oxidation of Organic Pollutants

Leng

Wang

et al. 2021

Preprint

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“…Thus, advanced oxidation processes (AOPs), one of the most efficient approaches for the in situ degradation of PAHs in aqueous environments, are usually used together with biochemical treatment [5][6][7]. Nonetheless, due to irreversible catalytic deactivation, secondary pollution and expensive treatment, the application of AOPs in practical fields is limited [8,9]. Therefore, it is of great significance to develop high efficiency and ecofriendly PAHs wastewater treatment method.…”

Section: Introductionmentioning

confidence: 99%

Enhanced biocatalysis of phenanthrene in aqueous phase by novel CA-Ca-SBE-laccase biocatalyst: Performance and mechanism

Xin-han

Xie

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Enzymes-mediated biocatalysis is believed to be a promising strategy for the degradation of polycyclic aromatic hydrocarbon (e.g., phenanthrene) in aqueous phase, due to its high efficiency and environmental harmfulness. However, the reusability of enzymes-mediated biocatalysis and its requirement for redox mediators limited its application. In this paper, enhanced phenanthrene removal was achieved by using a novel biocatalyst which coencapsulating laccase and natural redox mediator soybean meal extract on calcium modified chitosan-alginate (CA-Ca-SBE-laccase) beads with a network pore structure. High degradation efficiency of 94.4 % was achieved after treating aqueous solutions of 0.5 ppm phenanthrene for 20 min with the CA-Ca-SBE-laccase beads, which was 20-30 % higher than that of free laccase and ordinary immobilized laccase beads. Both the radical pathway of oxygen-containing stable free radicals and the nonradical laccase-SBE combined substrates with higher redox potential generated in CA-Ca-SBE-laccase beads contributed to the degradation of phenanthrene, and achieved the maximum double synergy of mediator and laccase. Benefiting from redox-mediating encapsulated SBE and from Ca modification of chitosan, the biocatalyst maintained fairly stable catalytic activities over a wide range of pH values, and considerable repeatability and storage stability were obtained. This study put forward an efficient laccase, redox mediator and immobilized support cofunctionalization technology, and would provide a new perspective for the increasing application scope of enzymes-mediated biocatalysis.

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“…[16][17][18][19][20][21][22] Generally, we divide the separation materials into two categories according to the separation environment: superhydrophobic/superolephilic materials and superoleophobic/superhydrophilic materials. [23][24][25][26][27][28][29] Because it is difficult to prepare superoleophobic and superhydrophilic materials in air, most of the reports focus on the preparation of superhydrophobic materials. Hydrophobic materials can selectively separate heavy oils from oil-water mixtures, but it is difficult to handle light oils in water.…”

Section: Introductionmentioning

confidence: 99%

A mechanically robust copper mesh with switchable wettability and antibacterial activity for selective oil–water separation

Hou

Wang

Zhang

et al. 2020

Applied Organom Chemis

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With the continuous improvement in living standards, the discharge of oily sewage in daily life and industry has gradually increased, causing considerable damage to the environment and also great inconvenience to people. Traditional treatment methods cannot meet the increasing demand for sewage treatment, so more efficient treatment methods need to be studied. Research on oil–water separation materials is gradually becoming intelligent, but most of these intelligent materials cannot solve the problem of bacterial growth on the surface, new antibacterial and hydrophobic materials need to be studied. Here, an inexpensive and simple method is presented to prepare an antibacterial copper mesh with pH‐responsive wettability between hydrophilic and hydrophobic. First, a copper mesh with a rough surface was prepared by an oxidation method, and then the oxidized copper mesh was immersed in the prepared coating solution of stearate (SA)‐TiO2 to obtain a superhydrophobic copper mesh. Scanning electron microscopy analysis showed that the modified copper mesh changed from the original smooth surface to a rough surface covered with needle‐like nano‐oxide wires. The SA‐TiO2‐coated copper mesh (STCM) has good separation efficiency (about 97%) and separation flux (about 1.1 × 105 L·m−2·h−1) for the immiscible oil–water mixture, the separation efficiency remained basically unchanged (about 97%) after 15 separation cycles, and the wettability of this can be changed by soaking in an alkaline solution at a specific pH (from 12 to 14). In addition, the prepared STCM showed good antibacterial properties against Staphylococcus aureus and Escherichia coli. This preparation strategy of STCM provides a low‐cost and facile method for wastewater treatment in practical applications.

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Fe/Mn nanoparticles encapsulated in nitrogen-doped carbon nanotubes as a peroxymonosulfate activator for acetamiprid degradation

Abstract: Bimetallic Fe/Mn nanoparticles and N-doped carbon nanotubes in FeMn@NCNT synergistically activate peroxymonosulfate to form SO4˙−, ˙OH, O2˙− and 1O2 for decomposing acetamiprid.

Cited by 181 publications

References 53 publications

Persulfate Activation by Ferrocene-based Metal-organic Framework Microspheres for Efficient Oxidation of Organic Pollutants

Persulfate Activation by Ferrocene-based Metal-organic Framework Microspheres for Efficient Oxidation of Organic Pollutants

Enhanced biocatalysis of phenanthrene in aqueous phase by novel CA-Ca-SBE-laccase biocatalyst: Performance and mechanism

A mechanically robust copper mesh with switchable wettability and antibacterial activity for selective oil–water separation

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