Layered oxides supported Co-Fe bimetal catalyst for carbamazepine degradation via the catalytic activation of peroxymonosulfate

Sun, Qing-Ting; Xu, Bu-De; Yang, Jinlong; Qian, Tingting; Jiang, Hong

doi:10.1016/j.cej.2020.125899

Cited by 88 publications

(25 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…( 9)-( 10)), resulting in a decrease of catalytic performance. This was consistent with the results of previous studies [53].…”

Section: Hco So Hco Sosupporting

confidence: 94%

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Wang

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Co-doped magnetic Mn 3 O 4 was synthesized by the solvothermal method and adopted as an effective catalyst for the degradation of oxytetracycline (OTC) in water.Synergistic interactions between Co-Mn 3 O 4 and Fe 3 O 4 not only resulted in the enhanced catalytic activity through the activation of peroxymonosulfate (PMS) to degrade OTC, but also made Fe 3 O 4 /Co-Mn 3 O 4 easy to be separated and recovered from aqueous solution. 94.2% of OTC could be degraded within 60 min at an initial OTC concentration of 10 mg/L, catalyst dosage of 0.2 g/L and PMS concentration of 10 mM, the high efficiency of which was achieved in a wider pH range of 3.0-10.0.The free radical quenching experiments showed that O 2•radicals and 1 O 2 played the main role in the degradation process. Co 3+ , Co 2+ , Fe 2+ , Fe 3+ , Mn 4+ , Mn 3+ and Mn 2+ on Fe 3 O 4 /Co-Mn 3 O 4 were identified as catalytic sites based on XPS analysis. Eventually, the intermediates of OTC degradation were examined and the possible decomposition pathways were proposed. The excellent catalytic performance of Fe 3 O 4 /Co-Mn 3 O 4 not 2 only came from the fact that the large specific surface area could provide abundant active sites for the activation of PMS, but also the charged redistribution among atoms to accelerate the reduction of metal ions. The high degradation efficiency of OTC in actual water samples indicated that Fe 3 O 4 /Co-Mn 3 O 4 had good potential for practical application.

show abstract

“…( 9)-( 10)), resulting in a decrease of catalytic performance. This was consistent with the results of previous studies [53].…”

Section: Hco So Hco Sosupporting

confidence: 94%

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Wang

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Five intermediates were identified, and their molecular formula were shown in Figure S14. On the basis of the GC–MS results and previous research, − the plausible CBZ degradation pathway in the flower-like CuFe 2 O 4 /PMS system could be proposed (Figure c). The olefinic double bond on the central heterocyclic ring of CBZ tended to be attacked by active oxygen species, generating epoxidized intermediate product P1 (10,11-epoxycarbamazepine, m / z = 253).…”

Section: Resultsmentioning

confidence: 64%

Preparation of Flower-like CuFe₂O₄ by a Self-Templating Method for High-Efficient Activation of Peroxymonosulfate To Degrade Carbamazepine

Jiang

Wang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Design of the low-cost and environmentally friendly catalyst for advanced oxidation processes is highly desired in environmental remediation. Herein, a flower-like CuFe2O4 nanostructure is synthesized by a self-templating method for the first time and used for the activation of peroxymonosulfate (PMS) to degrade carbamazepine (CBZ). The catalytic performance of the flower-like CuFe2O4 is much higher than that of the other CuFe2O4 structures (nanoparticles, bulk, and sphere). 90% of CBZ (10 mg/L) can be degraded by adding 0.1 g/L of CuFe2O4–16–350 and 0.2 g/L PMS, and 50% of TOC got removed in 120 min. After five consecutive cycles, the CBZ removal efficiency by the flower-like CuFe2O4 still remains at 66%. Kinetic behavior of CBZ degradation follows the pseudo-first-order reaction model, and the reaction rate constant value of the flower-like CuFe2O4 is 3.7 times higher than that of CuFe2O4 nanoparticles. The structure-dependent catalytic activity of CuFe2O4 catalysts is investigated by experiments and characterizations such as BET, XPS, and H2-TPR. The results show that the excellent catalytic performance of the flower-like CuFe2O4 is mainly attributed to the strong interaction of dual metal species in it apart from its high specific surface area and large pore volume. A reasonable mechanism of PMS activation is established on the basis of the characterizations of catalyst, radical determination, and the identification of intermediates. This work provides a novel strategy to develop a highly efficient and stable spinel catalyst for pollutant degradation through PMS activation.

show abstract

“…The injection volume was 25 μL, and the flow rate was maintained at 0.8 mL min –1 . The detection wavelength for CBZ was set at 285 nm . DO was measured using a HACH HQ40d portable multiparameter meter (HACH, Australia).…”

Section: Methodsmentioning

confidence: 99%

“…The detection wavelength for CBZ was set at 285 nm. 31 DO was measured using a HACH HQ40d portable multiparameter meter (HACH, Australia). Free chlorine was measured by applying diethyl-p-phenylenediamine/iodometry (APHA, 2005).…”

Section: Methodsmentioning

confidence: 99%

High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C₃N₄

Zhu

Chen

Jiang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

In this study, a solar/chlorine/graphitic carbon nitride (g-C 3 N 4 ) system for the highly efficient degradation of carbamazepine (CBZ) was constructed, and the degradation mechanism of CBZ in this system was elucidated. The removal rate of CBZ by g-C 3 N 4 combined with solar/chlorine was as high as 97.8%, which was more than twice that of the solar/chlorine combined system (43.8%). Electron spin resonance analysis revealed that the hydroxyl radicals (HO • ) in the solar/chlorine/g-C 3 N 4 system were remarkably less than that in the solar/chlorine photocatalytic system, wherein HO • was the dominant participant. However, the former system had higher efficiency than the latter. Scavenging tests confirmed the existence of a synergistic effect between solar/chlorine and g-C 3 N 4 in CBZ degradation, and ground-state atomic oxygen (O( 3 P)) played a more important role than HO • in the solar/chlorine/g-C 3 N 4 system. A novel O 3 -related pathway of CBZ degradation was proposed on the basis of the determination of intermediates. The intermediates detected via liquid chromatography quadrupole time of flight mass spectrometry (LC/Q-TOF-MS)/MS analysis indicated that O 3 attacked the double bond of CBZ via the Criegee mechanism and produced intermediates with two new aldehydes. This study not only improved the knowledge of the effects of O( 3 P) and the O( 3 P)-related degradation mechanism of organic pollutants but also provided a reminder that O( 3 P) might be overlooked in the photocatalytic processes, especially in processes that occur in the presence of dissolved oxygen or oxygen-containing anions.

show abstract

Layered oxides supported Co-Fe bimetal catalyst for carbamazepine degradation via the catalytic activation of peroxymonosulfate

Cited by 88 publications

References 56 publications

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Preparation of Flower-like CuFe₂O₄ by a Self-Templating Method for High-Efficient Activation of Peroxymonosulfate To Degrade Carbamazepine

High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C₃N₄

Contact Info

Product

Resources

About

Layered oxides supported Co-Fe bimetal catalyst for carbamazepine degradation via the catalytic activation of peroxymonosulfate

Cited by 88 publications

References 56 publications

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Peroxymonosulfate activation by Co-doped magnetic Mn3O4 for degradation of oxytetracycline in water

Preparation of Flower-like CuFe2O4 by a Self-Templating Method for High-Efficient Activation of Peroxymonosulfate To Degrade Carbamazepine

High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C3N4

Contact Info

Product

Resources

About

Preparation of Flower-like CuFe₂O₄ by a Self-Templating Method for High-Efficient Activation of Peroxymonosulfate To Degrade Carbamazepine

High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C₃N₄