Activation of persulfate by graphite supported CeO2 for isoniazid degradation

Qian, Ruyi; Shen, Tongdong; Yang, Qiangqiang; Lin, Kun‐Yi Andrew; Tong, Shaoping

doi:10.1016/j.seppur.2020.117197

Cited by 18 publications

(5 citation statements)

References 45 publications

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“…It could be seen that the degradation rate of MNC was slightly enhanced in the tap water background, which might be attributed to the presence of Cl − in tap water, generating reactive chlorine such as hypochlorite and hypochlorous acid radicals during the electrocatalytic process and promotes the degradation of MNC (Fig. S6) (Qian et al, 2020). In contrast, the degradation rate of MNC was limited in the surface water context, which could be attributed to the presence of a higher amount of dissolved organic matter (DOM) in the surface water, that competed with MNC.…”

Section: Resultsmentioning

confidence: 99%

Research on carbon black and Cerium co-doped Ti4O7-CB-Ce electrocatalytic oxidation of tetracycline-based antibiotics.

Chen,

He,

Lei

et al. 2024

Preprint

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Elemental doping is a promising way for enhancing the electrocatalytic activity of metal oxides. Herein, we fabricate Ti/ Ti4O7-CB-Ce anode materials by the modification means of carbon black and Cerium co-doped Ti4O7, and this shift effectively improve the interfacial charge transfer rate of Ti4O7 and •OH yield in the electrocatalytic process. Remarkably, the Ti4O7-CB-Ce anode exhibits excellent efficiency of minocycline (MNC) wastewater treatment (100 % removal within 20 minutes) and the removal rate reduces from 100 % to 98.5 % after 5 cycles, which is comparable to BDD electrode. •OH and 1O2 are identified as the active species in the reaction. Meanwhile, it’s discovered that Ti/ Ti4O7-CB-Ce anodes can effectively improve the biochemical properties of the non-biodegradable pharmaceutical wastewater (B/C values from 0.25 to 0.44) and significantly reduce the toxicity of the wastewater (luminescent bacteria inhibition rate from 100 % to 26.6 %). This work paves an effective strategy for designing superior metal oxides electrocatalysts.

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Section: Resultsmentioning

confidence: 99%

Research on carbon black and Cerium co-doped Ti4O7-CB-Ce electrocatalytic oxidation of tetracycline-based antibiotics.

Chen,

He,

Lei

et al. 2024

Preprint

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“…The addition of Cl − might produce some chlorine active substances with higher redox potential, thus improved the oxidative e ciency (Eqs. ( 2) and ( 3)) (Qian et al, 2020). SO 4 2− could not react with free radicals, the possible reason for its positive in uence was through a proper kinetics control to reduce the waste of the radicals (Eqs.…”

Section: Effect Of Key Factors On Tc Degradationmentioning

confidence: 99%

MXene-supported MIL-88A(Fe) as persulfate activator for removal of tetracycline

Chen,

Yang,

et al. 2024

Environ Sci Pollut Res

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The poor conductivity, poor stability and agglomeration of MIL-88A(Fe) limit its application as persulfate (PS) activator in water puri cation. Herein, MXene-supported MIL-88A (Fe) composites (M88A/MX) were synthesized to enhance its adsorption and catalytic capability for tetracycline (TC) removal. M88A/MX-0.2 composites exhibits optimal degradation e ciency reaching 98% under conditions of 0.2 g/L M88A/MX-0.2, 1.0 mM PS, 20 ppm TC, and pH 5. The degradation rate constants of M88A/MX-0.2 was 0.03217 min -1 , which was much higher than that of MIL-88A(Fe) (0.00159 min -1 ) and MXene (0.00626 min -1 ). The removal effects of reaction parameters, such as dosage of M88A/MX-0.2 and PS, initial solution pH and the presence of the common co-existing constituents (humic acid and the inorganic anions) were investigated in detail. Additionally, the reuse of M88A/MX-0.2 showed that the composites had good cycling stability. The results of electron paramagnetic resonance (EPR) and quenching experiments indicated that •OH, •SO 4 and •O 2 were involved in the M88A/MX-0.2/PS system. This study offered a new avenue for sulfate-based degradation of Fe-based metal organic framework.

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“…A pretreatment method was used to prepare GF according to the published procedures (Qian et al 2020). The catalyst of H 2 SO 4 -CeO 2 /GF was prepared as follows.…”

Section: Preparation Of the Catalystmentioning

confidence: 99%

“…It is generally believed that the peaks at binding energies of v 0 , u 0 , v 1 and u 1 reflect the presence of Ce 3þ , whilst the absorption at v, u, v 2 , u 2 , v 3 and u 3 represent Ce 4þ . The relative content of Ce 3þ was calculated according to a previously published method (Qian et al 2020). The calculation results show that the percentages of Ce 3þ in CeO 2 , H 2 SO 4 -CeO 2 , and H 2 SO 4 -CeO 2 /GF was 28.39%, 38.34%, and 38.67%, respectively.…”

Section: Characterizationmentioning

confidence: 99%

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Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

Jiang

Qian

Shen

et al. 2022

Water Science and Technology

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Graphite felt (GF) supported cerium oxide (CeO2) composite with sulfation pretreatment (H2SO4-CeO2/GF) was prepared by the impregnation method and employed as the catalyst to activate H2O2 for degradation of isoniazid (INH). The obtained samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and X-ray photoelectron spectrum (XPS). The results showed that H2SO4-CeO2/GF had good properties in activating H2O2 for the degradation of INH. The INH removal was about 89.4% in 120 min under the following conditions: H2O2 2.94 mM, H2SO4-CeO2/GF 2.6 g/L, INH 10 mg/L, initial pH at 6.8 and temperature at 25 °C. The effects of some reaction parameters including initial H2O2 concentration, initial INH concentration, initial pH value, the catalyst dosage and reaction temperature on INH degradation were investigated. On the basis of mechanism study and intermediate analysis, the possible degradation pathway of INH was proposed. Besides, effective degradation of methyl orange (MO) and norfloxacin (NOF) also confirmed the high activity of H2SO4-CeO2/GF in activation of H2O2. The H2SO4-CeO2/GF was relatively stable, showing good application prospect.

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Activation of persulfate by graphite supported CeO2 for isoniazid degradation

Cited by 18 publications

References 45 publications

Research on carbon black and Cerium co-doped Ti4O7-CB-Ce electrocatalytic oxidation of tetracycline-based antibiotics.

Research on carbon black and Cerium co-doped Ti4O7-CB-Ce electrocatalytic oxidation of tetracycline-based antibiotics.

MXene-supported MIL-88A(Fe) as persulfate activator for removal of tetracycline

Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

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