Electrocatalytic reduction of low-concentration thiamphenicol and florfenicol in wastewater with multi-walled carbon nanotubes modified electrode

Deng, Dayong; Deng, Fei; Tang, Bobin; Zhang, Jinzhong; Liu, Jiang

doi:10.1016/j.jhazmat.2017.03.013

Cited by 40 publications

(10 citation statements)

References 37 publications

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“…The catalytic performance of the as-prepared catalyst was examined by degrading three typical PhACs, including thiamphenicol (TAP), chloramphenicol (CAP), and florfenicol (FF) in aqueous solution, due to their toxic effects on the ecological environment and human body accumulated by food chain in surface water. 30 This study may provide not only the first insights into the PMS activation from the perspective of electron transfer via covalent bond construction but also an efficient method for sustainable remediation for pharmaceutical compounds. S1), and other analytical pure regents were obtained from Aladdin Industrial Corporation.…”

Section: Introductionmentioning

confidence: 99%

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Cui

Zhu

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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Heterogeneous catalysis can be enhanced through the construction of effective atom connection for rapid electron transport on the catalyst surface. Hence, this study proposed a new strategy for electron transfer regulation to facilitate redox cycle of Cu(II)/Cu(I). The objective was achieved by successful construction of copper-containing covalent bond through the in situ growth of porous g-C 3 N 4 with oxygen dopants and nitrogen defects (O-CN D ) on CuAl x O y substrate (CuAl@O-CN D ). On the basis of X-ray absorption fine structure (XAFS) and other characterization results, the facilitated redox behavior of copper species by electron transfer regulation was ascribed to the formation of a C−O−Cu bond on the porous-rich superficial of the catalyst; these covalent C−O−Cu bonds shortened the migration distance of electrons between Cu(II) and Cu(I) via Cu(I)−O−C−O−Cu(II) bridge. The construction of copper-containing covalent bonds in the catalyst resulted in efficient PMS activation for a rapid redox cycle of Cu(II)/Cu(I), triggering a series of reactions involving the continuous production of three highly active species (SO 4 •− , • OH and 1 O 2 ). The rapid diffusion and transportation of the generated active species from porous structures directly attack typical pharmaceutically active compounds (PhACs), achieving superior catalytic performance. This study provides a new routine to construct a C−O−Cu bond for PMS activation by regulating the electron transfer to accelerate the redox behavior of copper species for environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Cui

Zhu

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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“…Moreover, the presence of chloramphenicols in the environment ultimately leads to the formation of antibiotic resistant genes that are also considered as pollutants (Li et al, 2013). Although the use of chloramphenicols in food-producing animals in North America and European Union member countries has been severely restricted, they are still being used in developing nations due to their low production cost (Deng et al, 2017a;Liang et al, 2013). However, chloramphenicols cannot be effectively degraded by conventional wastewater treatment plants (WWTPs) and thus end up in environments (Dong et al, 2017;Du et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous activation of peroxymonosulfate by a biochar-supported Co3O4 composite for efficient degradation of chloramphenicols

Xiao

Zhang

et al. 2020

Environmental Pollution

114

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Herein, a new peroxymonosulfate (PMS) activation system was established using a biochar (BC)-supported Co 3 O 4 composite (Co 3 O 4 -BC) as a catalyst to enhance chloramphenicols degradation. The effects of the amount of Co 3 O 4 load on the BC, Co 3 O 4 -BC amount, PMS dose and solution pH on the degradation of chloramphenicol (CAP) were investigated. The results showed that the BC support could well disperse Co 3 O 4 particles. The degradation of CAP (30 mg/L) was enhanced in the Co 3 O 4 -BC/PMS system with the apparent degradation rate constant increased to 5.1, 19.4 and 7.2 times of that in the Co 3 O 4 /PMS, BC/PMS and PMS-alone control systems, respectively. Nearly complete removal of CAP was achieved in the Co 3 O 4 -BC/PMS system under the optimum conditions of 10 wt% Co 3 O 4 loading on BC, 0.2 g/L Co 3 O 4 -BC, 10 mM PMS and pH 7 within 10 min. The Co 3 O 4 /BC composites had a synergistic effect on the catalytic activity possibly because the conducting BC promoted electron transfer between the Co species and HSO 5À and thus accelerated the Co 3þ /Co 2þ redox cycle. Additionally, over 85.0 ± 1.5% of CAP was still removed in the 10th run. Although both SO 4 À and OH were identified as the main active species, SO 4 À played a dominant role in CAP degradation. In addition, two other chloramphenicols, i.e., florfenicol (FF) and thiamphenicol (TAP), were also effectively degraded with percentages of 86.4 ± 1.3% and 71.8 ± 1.0%, respectively. This study provides a promising catalyst Co 3 O 4 -BC to activate PMS for efficient and persistent antibiotics degradation.

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“…CNTs are widely applied in wastewater treatment because of their large specific area, high electrical conductivity, and remarkable mechanical and chemical stability. 31 Multi-walled carbon nanotubes (MWCNTs) are chosen in this study for their massive defects and traps caused by heavy deformation. The exposed edge plane defects are highly reactive sites and prone to the adsorption of reactive intermediates.…”

Section: Introductionmentioning

confidence: 99%

Graphitic carbon nitride and carbon nanotubes modified active carbon fiber cathode with enhanced H₂O₂ production and recycle of Fe³⁺/Fe²⁺ for electro-Fenton treatment of landfill leachate concentrate

Qin

Gao

et al. 2022

Environ. Sci.: Nano

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Electrocatalytic reduction of low-concentration thiamphenicol and florfenicol in wastewater with multi-walled carbon nanotubes modified electrode

Cited by 40 publications

References 37 publications

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Heterogeneous activation of peroxymonosulfate by a biochar-supported Co3O4 composite for efficient degradation of chloramphenicols

Graphitic carbon nitride and carbon nanotubes modified active carbon fiber cathode with enhanced H₂O₂ production and recycle of Fe³⁺/Fe²⁺ for electro-Fenton treatment of landfill leachate concentrate

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Electrocatalytic reduction of low-concentration thiamphenicol and florfenicol in wastewater with multi-walled carbon nanotubes modified electrode

Cited by 40 publications

References 37 publications

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Facile Construction of a Copper-Containing Covalent Bond for Peroxymonosulfate Activation: Efficient Redox Behavior of Copper Species via Electron Transfer Regulation

Heterogeneous activation of peroxymonosulfate by a biochar-supported Co3O4 composite for efficient degradation of chloramphenicols

Graphitic carbon nitride and carbon nanotubes modified active carbon fiber cathode with enhanced H2O2 production and recycle of Fe3+/Fe2+ for electro-Fenton treatment of landfill leachate concentrate

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Graphitic carbon nitride and carbon nanotubes modified active carbon fiber cathode with enhanced H₂O₂ production and recycle of Fe³⁺/Fe²⁺ for electro-Fenton treatment of landfill leachate concentrate