Mo-substituted CeVO4 system: solid solution formation and implications on sorption behaviour

Zain, Jerina Hisham; Grover, V.; Ramkumar, Jayshree; Bhattacharyya, Kaustava; Tyagi, A.K.

doi:10.1007/s10853-020-04398-9

“…X-ray diffraction (XRD) analysis of CoÀ CVO reveals a crystal structure resembling that of CVO (I4 1 /amd, JCPDS No. 12-0757), [16] with no discernible Co crystalline phase observed, potentially attributable to the low and uniform distribution of Co (Figure 1a and Figure S2). The main peaks of CoÀ CVO are extremely slight shifted to a lower angle compared to the CVO, and Rietveld refinement of XRD (Table S1) shows the cell parameters of CoÀ CVO become smaller than CVO (from 7.387 to 7.386).…”

Section: Resultsmentioning

confidence: 99%

Efficient Removal of Antibiotic Resistance Genes through 4f‐2p‐3d Gradient Orbital Coupling Mediated Fenton‐Like Redox Processes

Li,

Wang,

Zhang

et al. 2023

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Peroxymonosulfate (PMS) mediated radical and nonradical active substances can synergistically achieve the efficient elimination of antibiotic resistance genes (ARGs). However, enhancing interface electron cycling and optimizing the coupling of the oxygen‐containing intermediates to improve PMS activation kinetics remains a major challenge. Here, Co doped CeVO4 catalyst (Co‐CVO) with asymmetric sites was constructed based on Ce 4f‐O 2p‐Co 3d gradient orbital coupling. The catalyst achieved approximately 2.51×105 copies/mL of extracellular ARGs (eARGs) removal within 15 minutes, exhibited ultrahigh degradation rate (k = 1.24 min‐1). The effective gradient 4f‐2p‐3d orbital coupling precisely regulates the electron distribution of Ce‐O‐Co active center microenvironment, while optimizing the electronic structure of Co 3d states (especially the occupancy of eg), promoting the adsorption of oxygen‐containing intermediates. The generated radical and nonradical generated by interfacial electron cycling enhanced by the reduction reaction of PMS at the Ce site and the oxidation reaction at the Co site achieved a significant mineralization rate of ARGs (83.4%). The efficient removal of ARGs by a continuous flow reactor for 10 hours significantly reduces the ecological risk of ARGs in actual wastewater treatment.

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Efficient Removal of Antibiotic Resistance Genes through 4f‐2p‐3d Gradient Orbital Coupling Mediated Fenton‐Like Redox Processes

Li,

Wang,

Zhang

et al. 2023

Angewandte Chemie

1

0

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Peroxymonosulfate (PMS) mediated radical and nonradical active substances can synergistically achieve the efficient elimination of antibiotic resistance genes (ARGs). However, enhancing interface electron cycling and optimizing the coupling of the oxygen‐containing intermediates to improve PMS activation kinetics remains a major challenge. Here, Co doped CeVO4 catalyst (Co‐CVO) with asymmetric sites was constructed based on Ce 4f‐O 2p‐Co 3d gradient orbital coupling. The catalyst achieved approximately 2.51×105 copies/mL of extracellular ARGs (eARGs) removal within 15 minutes, exhibited ultrahigh degradation rate (k = 1.24 min‐1). The effective gradient 4f‐2p‐3d orbital coupling precisely regulates the electron distribution of Ce‐O‐Co active center microenvironment, while optimizing the electronic structure of Co 3d states (especially the occupancy of eg), promoting the adsorption of oxygen‐containing intermediates. The generated radical and nonradical generated by interfacial electron cycling enhanced by the reduction reaction of PMS at the Ce site and the oxidation reaction at the Co site achieved a significant mineralization rate of ARGs (83.4%). The efficient removal of ARGs by a continuous flow reactor for 10 hours significantly reduces the ecological risk of ARGs in actual wastewater treatment.

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Hot corrosion product and corrosion layer evolution of La2(Zr0.75Ce0.25)2O7 coating exposed to vanadate-sulfate salts at 1050 °C

Yang

¹

,

Bu

²

,

An

³

et al. 2022

Ceramics International

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Mo-substituted CeVO4 system: solid solution formation and implications on sorption behaviour

Cited by 6 publications

References 64 publications

Efficient Removal of Antibiotic Resistance Genes through 4f‐2p‐3d Gradient Orbital Coupling Mediated Fenton‐Like Redox Processes

Efficient Removal of Antibiotic Resistance Genes through 4f‐2p‐3d Gradient Orbital Coupling Mediated Fenton‐Like Redox Processes

Efficient Removal of Antibiotic Resistance Genes through 4f‐2p‐3d Gradient Orbital Coupling Mediated Fenton‐Like Redox Processes

Hot corrosion product and corrosion layer evolution of La2(Zr0.75Ce0.25)2O7 coating exposed to vanadate-sulfate salts at 1050 °C

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