Degradation of organic compounds through both radical and nonradical activation of peroxymonosulfate using CoWO4 catalysts

Nguyen, Anh Quoc Khuong; Ahn, Yong-Yoon; Shin, Gwanyong; Cho, Younsang; Lim, Jonghun; Kim, Kitae; Kim, Jungwon

doi:10.1016/j.apcatb.2022.122266

Cited by 24 publications

(5 citation statements)

References 96 publications

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“…The peaks at 19.2°, 24.1°, 25.0°, 30.6°, 54.2° and 62.1° can be attributed to (001), (110), (011), (111), (122) and (311) planes of CoWO 4 (JCPDS no. 15‐0867), indicating that the calcination process leads to the formation of crystalline Ru−CoWO 4 with a pure monoclinic phase, space group P2/c [43,44] . Obviously, Ru diffraction peaks cannot be found in XRD patterns of Ru 2 (M)−CoWO 4 /CC and Ru 2 (0)−CoWO 4 /CC, suggesting that the Ru elements are incorporated into the Co lattice in the sample.…”

Section: Resultsmentioning

confidence: 99%

“…15-0867), indicating that the calcination process leads to the formation of crystalline RuÀ CoWO 4 with a pure monoclinic phase, space group P2/c. [43,44] Obviously, Ru diffraction peaks cannot be found in XRD patterns of Ru 2 (M)À CoWO 4 / CC and Ru 2 (0)À CoWO 4 /CC, suggesting that the Ru elements are incorporated into the Co lattice in the sample. In addition, there are no other additional diffraction peaks for Ru 2 (M)À CoWO 4 /CC and Ru 2 (0)À CoWO 4 /CC, demonstrating that Ru is introduced into CoWO 4 and without changing the crystal structure.…”

Section: Structural Characterizationmentioning

confidence: 99%

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Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Wang,

Bai,

Luo

et al. 2024

ChemSusChem

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Engineering low‐cost electrocatalysts with desired features is vital to decrease the energy consumption but challenging for superior water splitting. Herein, we development a facile strategy by the addition of multivalence ruthenium (Ru) into the CoWO4/CC system. During the synthesis process, the most of Ru3+ ions were insinuated into the lattice of CoWO4, while the residual Ru3+ ions were reduced to metallic Ru and further attached to the interface between carbon cloth and CoWO4 sheets. The optimal Ru2(M)‐CoWO4/CC exhibited superior performance for the HER with an overpotential of 85 mV@10 mA cm−2, which was much better than most of reported electrocatalysts, regarding OER, a low overpotential of 240 mV@10 mA cm‐2 was sufficient. In comparison to Ru2(0)‐CoWO4/CC with the same Ru mass loading, multivalence Ru2(M)‐CoWO4/CC required a lower overpotential for OER and HER, respectively. The Ru2(M)‐CoWO4/CC couple showed excellent overall water splitting performance at a cell voltage of 1.48 V@10 mA cm‐2 for used as both anodic and cathodic electrocatalysts. Results of the study showed that the electrocatalytic activity of Ru2(M)‐CoWO4/CC was attributed to the in‐situ transformation of Ru/Co sites, the multivalent Ru ions and the synergistic effect of different metal species stimulated the intrinsic activity of CoWO4/CC.

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Section: Resultsmentioning

confidence: 99%

Section: Structural Characterizationmentioning

confidence: 99%

Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Wang,

Bai,

Luo

et al. 2024

ChemSusChem

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“…21 Nguyen et al verified that CoWO 4 catalyzed organic degradation 2.4–83.6 times more than other cobalt-based metal oxides. 22 In view of the above reflection, two binary metal oxides, CoCeO x and NiMnO 3 , were employed for the construction and discussion of the ECL amplification model. Benefiting from the interconversion of Co 2+ /Co 3+ and Ce 3+ /Ce 4+ , the binary metal oxide CoCeO x has been widely applied to catalyze redox reactions.…”

Section: Introductionmentioning

confidence: 99%

Co-amplification of luminol-based electrochemiluminescence immunosensors based on multiple enzyme catalysis of bimetallic oxides CoCeO_x and NiMnO₃ for the detection of CYFRA21-1

Zhang

Fang

et al. 2023

Analyst

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“…A.Q.K. Nguyen et al [ 22 ] reported that CoWO 4 nanoparticles synthesized by adjusting the PH during hydrothermal synthesis can efficiently degrade 4-chlorophenol by activated PMS. The experimental results showed that the excellent performance of the CoWO 4 catalyst (CoWO 4 -10) synthesized at pH 10 is attributed to its large specific surface area, the good charge transfer properties and the synergistic effect between Co and W ions.…”

Section: Introductionmentioning

confidence: 99%

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

Chen,

Zhang,

Liu

et al. 2023

Molecules

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How to efficiently activate peroxymonosulfate (PMS) in a complex water matrix to degrade organic pollutants still needs greater efforts, and cobalt-based bimetallic nanomaterials are desirable catalysts. In this paper, sea urchin-like NiCo2O4 nanomaterials were successfully prepared and comprehensively characterized for their structural, morphological and chemical properties via techniques, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), among others. The sea urchin-like NiCo2O4 nanomaterials exhibited remarkable catalytic performance in activating PMS to degrade phenol. Within the NiCo2O4/PMS system, the removal rate of phenol (50 mg L−1, 250 mL) reached 100% after 45 min, with a reaction rate constant k of 0.091 min−1, which was 1.4-times higher than that of the monometallic compound Co3O4/PMS system. The outstanding catalytic activity of sea urchin-like NiCo2O4 primarily arises from the synergistic effect between Ni and Co ions. Additionally, a comprehensive analysis of key parameters influencing the catalytic activity of the sea urchin-like NiCo2O4/PMS system, including reaction temperature, initial pH of solution, initial concentration, catalyst and PMS dosages and coexisting anions (HCO3−, Cl−, NO3− and humic acid), was conducted. Cycling experiments show that the material has good chemical stability. Electron paramagnetic resonance (EPR) and quenching experiments verified that both radical activation (SO4•−, •OH, O2•−) and nonradical activation (1O2) are present in the NiCo2O4/PMS system. Finally, the possible degradation pathways in the NiCo2O4/PMS system were proposed based on gas chromatography–mass spectrometry (GC-MS). Favorably, sea urchin-like NiCo2O4-activated PMS is a promising technology for environmental treatment and the remediation of phenol-induced water pollution problems.

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Degradation of organic compounds through both radical and nonradical activation of peroxymonosulfate using CoWO4 catalysts

Cited by 24 publications

References 96 publications

Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Co-amplification of luminol-based electrochemiluminescence immunosensors based on multiple enzyme catalysis of bimetallic oxides CoCeO_x and NiMnO₃ for the detection of CYFRA21-1

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

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Degradation of organic compounds through both radical and nonradical activation of peroxymonosulfate using CoWO4 catalysts

Cited by 24 publications

References 96 publications

Stability of Multivalent Ruthenium on CoWO4 Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Stability of Multivalent Ruthenium on CoWO4 Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Co-amplification of luminol-based electrochemiluminescence immunosensors based on multiple enzyme catalysis of bimetallic oxides CoCeOx and NiMnO3 for the detection of CYFRA21-1

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

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Product

Resources

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Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Stability of Multivalent Ruthenium on CoWO₄ Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

Co-amplification of luminol-based electrochemiluminescence immunosensors based on multiple enzyme catalysis of bimetallic oxides CoCeO_x and NiMnO₃ for the detection of CYFRA21-1