Carbonized polyaniline activated peroxymonosulfate (PMS) for phenol degradation: Role of PMS adsorption and singlet oxygen generation

Liu, Shiqi; Zhang, Zichen; Huang, Fei; Liu, Yongze; Feng, Li; Jiang, Jin; Zhang, Liqiu; Qi, Fei; Liu, Chao

doi:10.1016/j.apcatb.2021.119921

Cited by 371 publications

(60 citation statements)

References 61 publications

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“…) radicals because it contained α-H which could react with these two free radicals [55]. The i-PrOH was used to scavenge • OH (k •OH =1.9×10 9 M -1 s -1 ) [56] and BQ was used to scavenge O 2…”

Section: Identification Of Reactive Speciesmentioning

confidence: 99%

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

Wang

et al. 2022

Environ Sci Pollut Res

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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.

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Section: Identification Of Reactive Speciesmentioning

confidence: 99%

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

Wang

et al. 2022

Environ Sci Pollut Res

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“…The sulfate radical-based advanced oxidation processes (SR-AOPs) that activate peroxymonosulfate (PMS) or persulfate (PS) to generate sulfate radicals (SO 4 − ˙) and hydroxyl radicals (HO˙) have recently been widely investigated. 1–3 Compared with HO˙, SO 4 − ˙ exhibits many superiorities, such as broad working pH range, long half-life, and high redox potential (HO˙, E 0 = 2.8 V; SO 4 − ˙, E 0 = 2.5–3.1 V). 2,4–6 PMS commonly can be activated by UV, heat, ultrasonication, and transition metal ions.…”

Section: Introductionmentioning

confidence: 99%

“…have recently been widely investigated. [1][2][3] Compared with HO , SO 4 À exhibits many superiorities, such as broad working pH range, long half-life, and high redox potential (HO , E 0 = 2.8 V; SO 4 À , E 0 = 2.5-3.1 V). 2,[4][5][6] PMS commonly can be activated by UV, heat, ultrasonication, and transition metal ions.…”

Section: Introductionmentioning

confidence: 99%

A new FeOCl/graphene quantum dot catalyst for peroxymonosulfate activation to efficiently remove organic pollutants and inactivate Escherichia coli

et al. 2022

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“…8 1 O 2 displays an excellent selectivity for organic syntheses and has been explored in the photocatalytic oxidation 9,10 and degradation of pollutants. 11,12 1 O 2 can be produced in conventional reactions or through photosensitization pathways, particularly by using dye photosensitizers that promote intersystem crossing from triplet to singlet states of 1 O 2 . The combination of hydrogen peroxide (H 2 O 2 ) and sodium hypochlorite is also a classic approach to the generation of singlet oxygen.…”

Section: Introductionmentioning

confidence: 99%

“…Singlet oxygen ( 1 O 2 ) has a higher energetic state where the spin electrons are paired, which is an important reactive oxygen species (ROS) with selectivity and reactivity higher than those of the 3 ∑ g ground state of O 2 , and degradation of pollutants. , 1 O 2 can be produced in conventional reactions or through photosensitization pathways, particularly by using dye photosensitizers that promote intersystem crossing from triplet to singlet states of 1 O 2 . The combination of hydrogen peroxide (H 2 O 2 ) and sodium hypochlorite is also a classic approach to the generation of singlet oxygen .…”

Section: Introductionmentioning

confidence: 99%

An Isopolymolybdate-Incorporated Metal–Organic Framework with Sulfite Oxidase-Mimicking Activity for Photocatalytic Oxidation of Sulfides Utilizing In Situ-Generated Singlet Oxygen

et al. 2021

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Developing new photocatalysts for sulfide oxidation utilizing in situ-generated 1 O 2 is very significant. Inspired by natural enzymatic processes, we synthesized a mimic sulfite oxidase (SO), {[Co(Mo 4 O 13 )(TPT) 2 ]} (CoMo-TPT), by incorporating an isopolymolybdate anion [Mo 4 O 13 ] 2− into a 2,4,6tri(4-pyridyl)-1,3,5-triazine (TPT)-based metal−organic framework under mild hydrothermal conditions. In this structure, {Mo 4 O 13 } units with intrinsic SO-like catalytic sites are beneficial for the selective oxidation of sulfite and thioether. The ultraviolet−visible spectra of CoMo-TPT exhibited strong absorption from 250 to 650 nm and potential application in the utilization of solar energy. Mott− Schottky measurements indicated that CoMo-TPT is an n-type semiconductor with a LUMO value of −0.70 V (vs NHE) and a HOMO value of 1.39 V. The transient photocurrent responses with strong current density cycles with visible light indicated CoMo-TPT has a high photochemical activity. The lower resistance indicated that CoMo-TPT has a higher efficiency of photoinduced electron and hole separation. CoMo-TPT displayed a high efficiency of 99% and a selectivity of 97.3% in photocatalytic oxidation of sulfides by utilizing in situ-generated 1 O 2 through a tandem process of formation of H 2 O 2 from O 2 followed by catalyzed disproportionation of H 2 O 2 .

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Carbonized polyaniline activated peroxymonosulfate (PMS) for phenol degradation: Role of PMS adsorption and singlet oxygen generation

Cited by 371 publications

References 61 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

A new FeOCl/graphene quantum dot catalyst for peroxymonosulfate activation to efficiently remove organic pollutants and inactivate Escherichia coli

An Isopolymolybdate-Incorporated Metal–Organic Framework with Sulfite Oxidase-Mimicking Activity for Photocatalytic Oxidation of Sulfides Utilizing In Situ-Generated Singlet Oxygen

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