A novel combination of oxidative degradation for benzotriazole removal using TiO2 loaded on FeIIFe2IIIO4@C as an efficient activator of peroxymonosulfate

Jorfi, Sahand; Kakavandi, Babak; Motlagh, Hojjatallah Ramezani; Ahmadi, Mehdi; Jaafarzadeh, Neemat

doi:10.1016/j.apcatb.2017.07.035

Cited by 188 publications

(45 citation statements)

References 50 publications

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“…Similar observations have also been reported by Ding et al . and Jorfi et al . in the degradation of norfloxacin using magnetite nanoparticle‐activated persulfate and the degradation of benzotriazole in a T@MPAC/PMS/UV system.…”

Section: Resultssupporting

confidence: 89%

“… For phosphate, nitrate and carbonate ions, the inhibitory effect could be attributed to their actions as scavengers for SO 4 •− radicals, as reported in previous literature (Eqns (20)–(22)).

{normalCl}^{-} + {SO}_{4}^{• -} \to {normalCl}^{•} + {SO}_{4}^{2 -}

{normalCl}^{•} + {normalCl}^{-} \to {2Cl}^{• -}

{2Cl}^{• -} + {2Cl}^{• -} \to {normalCl}_{2} + {2Cl}^{-}

{normalCl}^{•} + {normalCl}^{•} \to {normalCl}_{2}

{normalCl}_{2} + {normalH}_{2} O \to HClO + HCl

HClO + HCl \to {normalH}^{+} + {HClO}^{-}

{PO}_{4}^{3 -} + {SO}_{4}^{• -} \to {PO}_{4}^{• 2 -} + {SO}_{4}^{2 -}

{NO}_{3}^{-} + {SO}_{4}^{• -} \to {NO}_{3}^{•} + {SO}_{<...>}

…”

Section: Resultsmentioning

confidence: 99%

“…In contrast to SO 4 •− radicals, hydroxyl radicals are non‐selective and can react with the aromatic ring in the aqueous solution via either hydrogen abstraction route or addition reaction . The observed by‐products can be further degraded into lower‐molecular‐weight molecules such as oxalic, malic and formic acids and finally mineralized to H 2 O and CO 2 through continuous attack of SO 4 •− and • OH radicals …”

Section: Resultsmentioning

confidence: 99%

“…The common approaches used for persulfate activation include thermal, ultraviolet (UV) irradiation, ultrasound (US), microwave (MW), magnetic nanoparticle‐functionalized carbon (MNP@C), TiO 2 ‐functionalized magnetic activated carbon (T@MPAC) and transition metal ion (e.g. Fe 2+ , Co 2+ , Mn 2+ , Ag 2+ and Ni 2+ ) methods . Among the transition metal ions, Fe 2+ is superior and is broadly employed for the decomposition of persulfate.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Rostamifasih

Pasalari

Mohammadi

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND In this study, a naturally magnetic semiconductor mineral (NM‐SCM) was used as a highly active, easily separable and green catalyst to activate persulfate (SPS) for the degradation of methylparaben (MeP) in aqueous solution by a heterogeneous catalyst system (SPS/NM‐SCM). NM‐SCM properties were characterized using field emission scanning electron microscope (FESEM), Brunauer–Emmett–Teller (BET), X‐ray diffraction (XRD), energy‐dispersive X‐ray (EDX) and vibrating sample magnetometer (VSM) analyses. The effects of contributing factors such as solution pH, NM‐SCM loading, SPS dosage and initial MeP concentration on MeP degradation were analyzed using response surface methodology (RSM) and Box–Behnken design (BBD). RESULTS The RSM model obtained from the present study (R2 > 0.99) showed a suitable correlation between the predicted values and experimental results of MeP degradation. Under optimized conditions (pH 6.5, SPS 5 mmol L−1, NM‐SCM 0.3 g L−1 and MeP 10 µmol L−1), a removal efficiency of 99.5% and a mineralization degree of 37% were achieved. The removal efficiency of MeP was reduced in the presence of inorganic ions as follows: chloride > nitrate > carbonate > phosphate. After five successive catalyst reuses, the degradation efficiency was >90%, indicating the excellent potential reusability of NM‐SCM catalyst. CONCLUSION Owing to the generation of highly reactive oxidizing species (SO4•−) and easy separation of the catalyst, the integration of NM‐SCM and SPS has great potential for the degradation of MeP from water and wastewater matrices. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 89%

{normalCl}^{-} + {SO}_{4}^{• -} \to {normalCl}^{•} + {SO}_{4}^{2 -}

{normalCl}^{•} + {normalCl}^{-} \to {2Cl}^{• -}

{2Cl}^{• -} + {2Cl}^{• -} \to {normalCl}_{2} + {2Cl}^{-}

{normalCl}^{•} + {normalCl}^{•} \to {normalCl}_{2}

{normalCl}_{2} + {normalH}_{2} O \to HClO + HCl

HClO + HCl \to {normalH}^{+} + {HClO}^{-}

{PO}_{4}^{3 -} + {SO}_{4}^{• -} \to {PO}_{4}^{• 2 -} + {SO}_{4}^{2 -}

{NO}_{3}^{-} + {SO}_{4}^{• -} \to {NO}_{3}^{•} + {SO}_{<...>}

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Rostamifasih

Pasalari

Mohammadi

et al. 2019

J of Chemical Tech & Biotech

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show abstract

“…Jorfi et al [18] developed TiO 2 catalyst supported on magnetic activated carbon for the oxidative degradation of benzotriazole (BTA) by UV-Fenton process. According to the authors, the catalyst showed good reusability, since after five cycles of reuse, the efficiency in the degradation of BTA dropped from 92.2 to 71.6%.…”

Section: Introductionmentioning

confidence: 99%

Titanium Dioxide Films for Photocatalytic Degradation of Methyl Orange Dye

Bento¹,

Pillis²

2018

Titanium Dioxide - Material for a Sustainable Environment

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The aim of this work was to characterize and evaluate the influence of the thickness on the photocatalytic efficiency of titanium dioxide thin films on the degradation of methyl orange dye under UV light irradiation. The films of 280 and 468 nm thick were deposited on borosilicate substrates at 400°C by the MOCVD technique using titanium isoproxide IV as precursor. XRD analyses showed the formation of anatase-TiO 2 phase. Crosssectional FE-SEM images show that the films presented a dense columnar structure and grown perpendicularly to the substrate surface. The photocatalytic activity of the catalysts was studied using UV-vis spectrophotometry The TiO 2 film with 468 nm of thickness presented higher photocatalytic activity exhibiting 69% of dye degradation. The increase of grain size and thickness of the films promoted an improvement of photocatalytic efficiency.

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Catalyst‐Free Photochemical Activation of Peroxymonosulfate in Xanthene‐Rich Systems for Fenton‐Like Synergistic Decontamination: Efficacy of Proton Transfer Process

et al. 2023

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Catalyst‐free visible light assisted Fenton‐like catalysis offers opportunities to achieve the sustainable water decontamination, but the synergistic decontamination mechanisms are still unclear, especially the effect of proton transfer process (PTP). The conversion of peroxymonosulfate (PMS) in photosensitive dye‐enriched system was detailed. The photo‐electron transfer between excited dye and PMS triggered the efficient activation of PMS and enhanced the production of reactive species. Photochemistry behavior analysis and DFT calculations revealed that PTP was the crucial factor to determine the decontamination performance, leading to the transformation of dye molecules. The excitation process inducing activation of whole system was composed of low energy excitations, and the electrons and holes were almost contributed by LUMO and HOMO. This work provided new ideas for the design of catalyst‐free sustainable system for efficient decontamination.

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A novel combination of oxidative degradation for benzotriazole removal using TiO2 loaded on FeIIFe2IIIO4@C as an efficient activator of peroxymonosulfate

Cited by 188 publications

References 50 publications

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Titanium Dioxide Films for Photocatalytic Degradation of Methyl Orange Dye

Catalyst‐Free Photochemical Activation of Peroxymonosulfate in Xanthene‐Rich Systems for Fenton‐Like Synergistic Decontamination: Efficacy of Proton Transfer Process

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