Cu(II) assisted peroxymonosulfate oxidation of sulfonamide antibiotics: The involvement of Cu(III)

Zhao, Qing; Zhang, Xiao; Huang, Dan; Chen, Long; Li, Shuxin; Chovelon, Jean‐Marc; Zhou, Lei; Xiu, Guangli

doi:10.1016/j.chemosphere.2021.131329

Cited by 38 publications

(5 citation statements)

References 70 publications

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“…Additionally, it was previously proposed that the oneelectron transfer reaction from the sulfonamide (e.g., sulfamerazine (SMZ)) moiety to the Cu(III) moiety was likely to take place via a transition state, which involved the formation of a new H-bond between amino H on SMZ and O on Cu(III) species, resulting in the generation of the SMZ radical cation and Cu(II) species. 14 Whether the reaction of Cu(III) with sulfamethazine lead to the regeneration of Cu(II) needs to be further clarified. To this end, the concentration of Cu(II) in ultrapure water with an electron-deficient compound (benzoic acid, BA) and an electron-rich compound (i.e., SMT) was compared.…”

Section: •−mentioning

confidence: 99%

“…As suggested by prior studies, the mechanisms of Cu-catalyzed AOPs remain controversial, and different oxidation pathways have been proposed, which mainly include free radical ( • OH, sulfate radical (SO 4 •– ), superoxide radical (O 2 •– )), nonradical (Cu(III), surface-activated persulfate (i.e., peroxymonosulfate (PMS) and peroxydisulfate (PDS)), and singlet oxygen ( 1 O 2 )) pathways. − In addition, the reactive oxygen species (ROS) involved in Cu-based AOPs were found to be pH-dependent . For example, Wei et al proposed that surface-associated Cu(III) played an important role in 4-chlorophenol (4-CP) in the CuO/PMS process in the pH range of 3.0–10.0 .…”

Section: Introductionmentioning

confidence: 99%

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Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

Dong

Xiao

et al. 2023

ACS EST Eng.

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Herein, the decontamination performance and likelihood of a shift in the reaction mechanism of CuO-activated percarbonate (SPC) in the presence of ascorbic acid (AA) (i.e., CuO/SPC/AA process) under varying pH conditions were explored. Experimental results revealed that sulfamethazine (SMT) could be well degraded over a wide pH range (3.0–9.0). Mechanistic investigations suggested that the hydroxyl radical (•OH) was the major reactive oxygen species (ROS) at acidic pH, whereas Cu(III) played a dominant role in SMT degradation at neutral and alkaline pHs. Alternatively, •OH was determined to be the secondary reactive species generated from the hydrolysis of Cu(III) at neutral and alkaline pHs. Moreover, the role of AA and coexisting Na2CO3 was explored. It was concluded that the regeneration of Cu(I) played an important role in mediating the copper redox cycle under all of the studied pHs, which mainly benefited from reductive AA, and the available superoxide radical (O2 •–) and deprotonated form of H2O2 could also contribute to this process at neutral and alkaline pHs. The coexisting Na2CO3 exerted a negligible impact on SMT degradation at acidic and neutral pHs, while a slight inhibitive effect was observed at alkaline pH. Simultaneously, the potential practicability of the CuO/SPC/AA process was evaluated. This work deepens the understanding of copper-catalyzed heterogeneous activation of percarbonate, widening the application of the reductant for water decontamination.

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Section: •−mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

Dong

Xiao

et al. 2023

ACS EST Eng.

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“…Since Cu(III) with strong oxidative capacity will oxidize H 2 O/OH − to produce •OH ( Eq. 1 ) ( 23 , 54 ), its reduction peak intensity was weak, which may be another source of •OH in the system besides water electrolysis. After adding Cu(III) quencher ( 53 ), the electrochemical oxidation ability of the Cu-Sb-SnO 2 anode was reduced to the similar level of the Sb-SnO 2 anode ( Fig.…”

Section: Resultsmentioning

confidence: 98%

In situ electrogenerated Cu(III) triggers hydroxyl radical production on the Cu-Sb-SnO ₂ electrode for highly efficient water decontamination

Cheng

et al. 2023

Proc. Natl. Acad. Sci. U.S.A.

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The electrochemical oxidation process has the unique advantage of in-situ •OH generation for deep mineralization of organic pollutants, which is expected to provide a solution for the globally decentralized wastewater treatment and reuse. However, it is still a great challenge to develop low-cost anodes with ultrahigh •OH yield and low energy consumption. Here, a low-cost and stable mixed metal oxide (MMO) anode (Cu-Sb-SnO 2 ) developed by a simple and scalable preparation process presents extremely high organic pollutants degradation efficiency and low energy consumption. The tetracycline degradation kinetics constant of the Cu-Sb-SnO 2 system (0.362 min −1 ) was 9 to 45 times higher than that of other prepared anodes, which is superior to the existing anodes reported so far. The experimental results and theoretical calculations indicate that the Cu-Sb-SnO 2 has moderate oxygen evolution potential, larger water adsorption energy, and lower reaction energy barrier, which is conducive to selective water oxidation to generate •OH. Notably, it is systematically and comprehensively confirmed that the generation of •OH triggered by in situ electrogenerated Cu(III) increased •OH steady-state concentration by over four times. Furthermore, the doped Cu species can play a key role in promoting charge transfer as an “electronic porter” between Sn and Sb in the electrocatalytic process by adjusting the electronic structure of the Sb-SnO 2 electrode. This work paves the way for the development of MMO anodes utilizing the advantage of the Cu redox shuttle.

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“…Ni 2+ on Ni-AAPTMS-SBA-15 promoted the adsorption of SAs through complexation. 17,52,53 Therefore, except for SIZ, the adsorption capacity of Ni-AAPTMS-SBA-15 for other SAs was tested. The experimental results are shown in Fig.…”

Section: Mechanismmentioning

confidence: 99%

Metal ion-supported mesoporous silica materials for the removal of sulfamethizole from water

Yan,

Duan,

et al. 2024

New J. Chem.

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Cu(II) assisted peroxymonosulfate oxidation of sulfonamide antibiotics: The involvement of Cu(III)

Cited by 38 publications

References 70 publications

Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

In situ electrogenerated Cu(III) triggers hydroxyl radical production on the Cu-Sb-SnO ₂ electrode for highly efficient water decontamination

Metal ion-supported mesoporous silica materials for the removal of sulfamethizole from water

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Cu(II) assisted peroxymonosulfate oxidation of sulfonamide antibiotics: The involvement of Cu(III)

Cited by 38 publications

References 70 publications

Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

Ascorbic Acid-Enhanced CuO/Percarbonate Oxidation: Insights Into the pH-Dependent Mechanism

In situ electrogenerated Cu(III) triggers hydroxyl radical production on the Cu-Sb-SnO 2 electrode for highly efficient water decontamination

Metal ion-supported mesoporous silica materials for the removal of sulfamethizole from water

Contact Info

Product

Resources

About

In situ electrogenerated Cu(III) triggers hydroxyl radical production on the Cu-Sb-SnO ₂ electrode for highly efficient water decontamination