Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe2O4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

Cai, Xuhui; 田玲,; Chen, Meifei; Liu, Yijun; Wang, Wei; Junhao, Long; Zhang, Yanjuan; Gan, Tao; Hu, Huayu; Huang, Zuqiang

doi:10.1016/j.chemosphere.2022.134005

Cited by 14 publications

(4 citation statements)

References 49 publications

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“…Figure S1 depicts the N 2 adsorption–desorption isotherms of all Cu 1−x K x Fe 2 O 4 catalysts, and the parameters (BET surface area, pore volume, and pore size) of the catalysts are listed in Table 2. The N 2 adsorption–desorption curves of all catalysts display type IV isotherms with H3‐type hysteresis loop, suggesting the existence of mesoporous structures 33,34 . It is noted that the BET surface area of CuFe 2 O 4 is 2.76 m 2 /g, and it increased to 3.32 and 4.08 m 2 /g with the K + ion doping level of 0.05 and 0.1 respectively.…”

Section: Resultsmentioning

confidence: 90%

“…The N 2 adsorption-desorption curves of all catalysts display type IV isotherms with H3-type hysteresis loop, suggesting the existence of mesoporous structures. 33,34 It is noted that the BET surface area of CuFe 2 O 4 is 2.76 m 2 /g, and it increased to 3.32 and 4.08 m 2 /g with the K + ion doping level of 0.05 and 0.1 respectively. The larger surface area can improve the contact efficiency between gaseous reactants and active sites of catalysts.…”

Section: Catalysts Characterizationmentioning

confidence: 98%

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Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts

Abuelgasim

Wang

et al. 2022

Intl J of Energy Research

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Summary Soot particulate emitting from diesel engines are serious to both human health and environment. Efficient catalyst is vital in diesel particulate filter technology to decrease soot oxidation temperature. Cu1−xKxFe2O4 (x = 0, 0.05, 0.1, and 0.15) catalysts are synthesized and analyzed with XRD, Raman, BET, SEM, TEM, TG, EDS, XPS, catalytic activity tests, and kinetic analysis. The results suggests that many factors affect the catalytic activity, and the contents of oxygen vacancies are dominant. A large amount of oxygen vacancies which facilitate to the soot oxidation are created with the assistance of K+, and they increase with the increasing doping contents. Excessive surface concentration of K+ may lead to the partially covering of active sites of the catalysts. Therefore, Cu0.9K0.1Fe2O4 catalyst exhibits the best catalytic activity in soot oxidation, which decreases the Tmax of soot by 279°C. This decrease makes it highly promising for application in diesel particulate filter.

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Section: Resultsmentioning

confidence: 90%

Section: Catalysts Characterizationmentioning

confidence: 98%

Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts

Abuelgasim

Wang

et al. 2022

Intl J of Energy Research

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“…The Cu 2p 3/2 peaks at binding energy ~931.6 were identified as Cu 1+ while the peaks at ~933.9 were identified as Cu 2+ [7,37] (Figure 5d). Here, a 11.5% decrease in Cu 2+ composition after treatment was observed, signifying that the Cu 1+ oxidation had occurred.…”

Section: Photo-fenton Mechanismmentioning

confidence: 99%

“…In the O 1s spectra, three peaks at binding energy ~528.2, ~529.1 and ~530.2 eV were assigned to the surface lattice oxygen of metal oxides (i.e., Fe-O, Mn-O and Cu-O; O latt ) [12,37] (Figure 5e). The deconvoluted peak at 531.9 eV was identified as the oxygen vacancy (O V ) while the peak at 533.2 eV was attributed to the adsorbed oxygen (O ads ) and/or adsorbed molecular H 2 O [13,21].…”

Section: Photo-fenton Mechanismmentioning

confidence: 99%

Enhanced Photo-Fenton Activity Using Magnetic Cu0.5Mn0.5Fe2O4 Nanoparticles as a Recoverable Catalyst for Degrading Organic Contaminants

Angkaew

Sakulthaew

Nimtim

et al. 2022

Water

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Interest in using various nanoparticle catalysts to activate H2O2 with light for organic contaminant and wastewater treatment is steadily increasing. We successfully synthesized magnetically recoverable Cu0.5Mn0.5Fe2O4 nanoparticles using a simple co-precipitation method followed by melamine-assisted calcination. Material characterization revealed that melamine acted as a coordinating agent during the calcination process that promoted a ferrite structure. Copper (Cu)-substitution effectively decreased material aggregation and promoted catalytic activities. Cu0.5Mn0.5Fe2O4 nanoparticles showed outstanding catalytic performance on several organic contaminants (87.6–100.0% removal within 2 h). Using oxytetracycline (OTC) as a surrogate wastewater constituent, we found that the hydroxyl radical (•OH) and superoxide anions (•O2−) were the active radical species involved in OTC degradation. Cu0.5Mn0.5Fe2O4 nanoparticles exhibited excellent photo-Fenton catalytic ability in real wastewater and demonstrated high material stability, even after four consecutive uses (i.e., fourth cycle). In a pilot-scale experiment (10 L), we provide proof that our rigorous treatment system was able to remove remnant OTC, TOC, and also any available colloidal particles to only 1 NTU. Ecotoxicity studies using an aquatic plant (Hydrilla verticillata) and zooplankton revealed that treated water could be reused in various ratios. Furthermore, at 5% of treated water, rapid leaf recovery and a significant increase in rotifer numbers were reported. These observations support the use of Cu0.5Mn0.5Fe2O4/H2O2/light as an efficient and environmentally friendly catalytic system for treatment of organic contaminants, and a radical generating mechanism is proposed.

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The synergistic effect of g-C3N4/GO/CuFe2O4 for efficient sunlight-driven photocatalytic degradation of methylene blue

Tahir,

Zahid,

Hanif

et al. 2024

Int. J. Environ. Sci. Technol.

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Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe2O4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

Cited by 14 publications

References 49 publications

Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts

Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts

Enhanced Photo-Fenton Activity Using Magnetic Cu0.5Mn0.5Fe2O4 Nanoparticles as a Recoverable Catalyst for Degrading Organic Contaminants

The synergistic effect of g-C3N4/GO/CuFe2O4 for efficient sunlight-driven photocatalytic degradation of methylene blue

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Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe2O4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

Cited by 14 publications

References 49 publications

Enhanced soot oxidation by oxygen vacancies via K + doped CuFe 2 O 4 spinel catalysts

Enhanced soot oxidation by oxygen vacancies via K + doped CuFe 2 O 4 spinel catalysts

Enhanced Photo-Fenton Activity Using Magnetic Cu0.5Mn0.5Fe2O4 Nanoparticles as a Recoverable Catalyst for Degrading Organic Contaminants

The synergistic effect of g-C3N4/GO/CuFe2O4 for efficient sunlight-driven photocatalytic degradation of methylene blue

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Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts

Enhanced soot oxidation by oxygen vacancies via K ⁺ doped CuFe ₂ O ₄ spinel catalysts