Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

Zhang, Yuting; Cao, Lu; Xu, Bin; Qi, Fei; Chu, Wei

doi:10.1016/j.apcatb.2016.06.003

Cited by 226 publications

(41 citation statements)

References 66 publications

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“…[40] Thecharacteristic peaks at 932.3 eV and 952.2 eV correspond to the Cu 2p 3/2 and Cu 2p 1/2 orbitals of Cu + with the shoulder peaks at 934.3 eV and 954.2 eV confirming the presence of Cu 2+ (Figure 4b). [41][42][43] TheCu2pspectrum shifts to alower binding energy compared with Cu 1.81 S, indicating the electron-rich state. [44] Thep eak shifts in the XPS spectra of Co and Cu suggest that the incorporated Cu-S species might act as electronic donors in CoO/Co-Cu-S-2.…”

Section: Resultsmentioning

confidence: 98%

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

et al. 2019

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Hierarchical hollow structures for electrode materials of supercapacitors could enlarge the surface area, accelerate the transport of ions and electrons, and accommodate volume expansion during cycling. Besides, construction of heterostructures would enhance the internal electric fields to regulate the electronic structures. All these features of hierarchical hollow heterostructures are beneficial for promoting the electrochemical properties and stability of electrode materials for high‐performance supercapacitors. Herein, CoO/Co‐Cu‐S hierarchical tubular heterostructures (HTHSs) composed of nanoneedles are prepared by an efficient multi‐step approach. The optimized sample exhibits a high specific capacity of 320 mAh g−1 (2300 F g−1) at 2.0 A g−1 and outstanding cycling stability with 96.5 % of the initial capacity retained after 5000 cycles at 10 A g−1. Moreover, an all‐solid‐state hybrid supercapacitor (HSC) constructed with the CoO/Co‐Cu‐S and actived carbon shows a stable and high energy density of 90.7 Wh kg−1 at a power density of 800 W kg−1.

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Section: Resultsmentioning

confidence: 98%

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

et al. 2019

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“…[59][60][61] Given the high oxidation potential of these radicals, 62 they can perform the total degradation of the organic matter (pollutants) to non-harmful molecules (CO2 and water). At the same time, MnO2 can also produce additional HO • radicals through the Fenton-like reaction in the presence of H2O2, 57,[63][64][65][66] resulting in an enhancement of the total oxidation of the organic pollutants.…”

Section: Resultsmentioning

confidence: 99%

Metal-Oxide-Based Microjets for the Simultaneous Removal of Organic Pollutants and Heavy Metals

Villa

Parmar

Vilela

et al. 2018

ACS Appl. Mater. Interfaces

113

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Water contamination from industrial and anthropogenic activities is nowadays a major issue in many countries worldwide. To address this problem, efficient water treatment technologies are required. Recent efforts have focused on the development of self-propelled micromotors that provide enhanced micromixing and mass transfer by the transportation of reactive species, resulting in higher decontamination rates. However, a real application of these micromotors is still limited due to the high cost associated to their fabrication process. Here, we present FeO-decorated SiO/MnO microjets for the simultaneous removal of industrial organic pollutants and heavy metals present in wastewater. These microjets were synthesized by low-cost and scalable methods. They exhibit an average speed of 485 ± 32 μm s (∼28 body length per s) at 7% HO, which is the highest reported for MnO-based tubular micromotors. Furthermore, the photocatalytic and adsorbent properties of the microjets enable the efficient degradation of organic pollutants, such as tetracycline and rhodamine B under visible light irradiation, as well as the removal of heavy metal ions, such as Cd and Pb.

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“…The two strong peaks at 642.3 and 373.5 eV are ascribed to Mn 2p 1/2 and Mn 2p 3/2 , respectively, in Figure a. The presence of Mn 4+ and Mn 2+ can be confirmed by the appearance of peak at 642.5 and 641.1 eV ,. Therefore, these data suggest the presence of MnO 2 and Mn 2+ (linking MnO 2 and TA) in the sample.…”

Section: Resultsmentioning

confidence: 76%

Systematic Investigation on the Adsorption Performance and Mechanism of MnO₂/TA Nanoflowers for Cu(II) Removal from Aqueous Solution

et al. 2019

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In this work, a nanoflower-type manganese dioxide composite with tannic acid (MnO 2 /TA) was prepared using a facile hydrothermal method. The maximum adsorption capacity of nanoflower MnO 2 /TA for Cu(II) removal from aqueous solution was 194.3 mg⋅g À 1 , and this illustrated the excellent adsorptive activity of nanoflower MnO 2 /TA. Adsorption kinetics and isotherm investigations showed that pseudo second order kinetics and the Langmuir isotherm model fit the experimental data well. The surface complex formation model (SCFM) was used to study the adsorptive process and mechanism of Cu(II) adsorption on the surface of MnO 2 /TA. Further investigation indicated that the adsorption energies for various forms of Cu (II) were negative which indicated that Cu(II) adsorption on MnO 2 /TA was a spontaneous process. Electrostatic interactions and chemical complexation were involved in Cu(II) removal by MnO 2 /TA from aqueous solution. The decline of adsorption capacity was about 10% for MnO 2 /TA after being reused five times, and this showed that the adsorbent might be reused in Cu(II) removal. The MnO 2 /TA nanocomposite has been proven to be a low-cost and efficient adsorbent that could be a potential material for use in environmental treatment. Understanding the adsorption mechanism might provide a technical basis for the processual design of heavy metal adsorbents.[a] Prof.

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Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

Cited by 226 publications

References 66 publications

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

Metal-Oxide-Based Microjets for the Simultaneous Removal of Organic Pollutants and Heavy Metals

Systematic Investigation on the Adsorption Performance and Mechanism of MnO₂/TA Nanoflowers for Cu(II) Removal from Aqueous Solution

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Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

Cited by 226 publications

References 66 publications

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors

Metal-Oxide-Based Microjets for the Simultaneous Removal of Organic Pollutants and Heavy Metals

Systematic Investigation on the Adsorption Performance and Mechanism of MnO2/TA Nanoflowers for Cu(II) Removal from Aqueous Solution

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Systematic Investigation on the Adsorption Performance and Mechanism of MnO₂/TA Nanoflowers for Cu(II) Removal from Aqueous Solution