Enhanced Fenton-like degradation of refractory organic compounds by surface complex formation of LaFeO3 and H2O2

Nie, Yulun; Zhang, Lili; Li, Yu You; Hu, Chun

doi:10.1016/j.jhazmat.2015.03.065

Cited by 108 publications

(32 citation statements)

References 35 publications

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“…37-1493 (space group Pnma). This observation is in agreement with earlier reports of preparation of orthorhombic LaFeO 3 [5,25,35].…”

Section: Lafeo 3 Ceramic Samples Characterizationsupporting

confidence: 94%

“…Many studies reported the preparation of LaFeO 3 via sol gel route using different carboxylic acids as complexing agent [9,[23][24][25]. This method is a facile dominant tool for the synthesis of homogenous, crystalline metal oxides at nanoscale, which were extensively used for gas sensor applications, as demonstrated by the large literature body produced.…”

Section: Introductionmentioning

confidence: 99%

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LaFeO3 ceramics as selective oxygen sensors at mild temperature

Jaouali

Hamrouni

Moussa

et al. 2018

Ceramics International

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. www.elsevier.com/locate/ceri LaFeO 3 ceramics as selective oxygen sensors at mild temperature Imen JAOUALI (a,b) , Hayfa HAMROUNI (a,b) , Noomen MOUSSA (a) , Mohamed Faouzi NCIB (a) , Miguel Angel CENTENO (c) , Anna BONAVITA (b) , Giovanni NERI (b) , Salvatore Gianluca LEONARDI (b)*

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“…37-1493 (space group Pnma). This observation is in agreement with earlier reports of preparation of orthorhombic LaFeO 3 [5,25,35].…”

Section: Lafeo 3 Ceramic Samples Characterizationsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

LaFeO3 ceramics as selective oxygen sensors at mild temperature

Jaouali

Hamrouni

Moussa

et al. 2018

Ceramics International

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“…Many investigations have proved that the interface reaction of H 2 O 2 on the catalyst is the essential step for the generation of hydroxyl radicals (Lin and Gurol, 1998;Xu and Wang, 2012;Nie et al, 2015). Accordingly, the heterogeneous Fenton oxidation of organics is much slower than the classic Fenton reaction, although a higher degree of mineralization can be accomplished by the heterogeneous reaction (Teel et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of phosphate on heterogeneous Fenton oxidation of catechol by nano-Fe 3 O 4 : Inhibitor or stabilizer?

Yang

Sun

et al. 2016

Journal of Environmental Sciences

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The effect of phosphate on adsorption and oxidation of catechol, 1,2-dihydroxybenzene, in a heterogeneous Fenton system was investigated. In situ attenuated total reflectance infrared spectroscopy (ATR-FTIR) was used to monitor the surface speciation at the nano-Fe 3 O 4 catalyst surface. The presence of phosphate decreased the removal rate of catechol and the abatement of dissolved organic compounds, as well as the decomposition of H 2 O 2 . This effect of phosphate was mainly due to its strong reaction with surface sites on the iron oxide catalyst. At neutral and acid pH, phosphate could displace the adsorbed catechol from the surface of catalyst and also could compete for surface sites with H 2 O 2 . In situ IR spectra indicated the formation of iron phosphate precipitation at the catalyst surface. The iron phosphate surface species may affect the amount of iron atoms taking part in the catalytic decomposition of H 2 O 2 and formation of hydroxyl radicals, and inhibit the catalytic ability of Fe 3 O 4 catalyst. Therefore, phosphate ions worked as stabilizer and inhibitor in a heterogeneous Fenton reaction at the same time, in effect leading to an increase in oxidation efficiency in this study. However, before use of phosphate as pH buffer or H 2 O 2 stabilizer in a heterogeneous Fenton system, the possible inhibitory effect of phosphate on the actual removal of organic pollutants should be fully considered.

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“…Among AOPs, Fenton (i.e., the reaction between Fe 2+ and H 2 O 2 ) is a powerful oxidant generating the hydroxyl radicals (∙OH, E 0 = 2.80 V), which react with various organic compounds at the near-diffusion controlled rates 6 7 , leading to an effective degradation and mineralization of organic pollutants 8 . However, it should to be operated at pH < 3.0 and the generated iron sludge limited the wide application of the homogeneous Fenton process 9 . Heterogeneous Fenton-like activator of zero valent iron (ZVI) was developed, which could be used over a wide pH range to decompose H 2 O 2 instead of homogeneous ferrous iron 10 11 .…”

mentioning

confidence: 99%

Enhanced Fenton-like Degradation of Trichloroethylene by Hydrogen Peroxide Activated with Nanoscale Zero Valent Iron Loaded on Biochar

Yan

Qian

Gao

et al. 2017

Sci Rep

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Composite of nanoscale Zero Valent Iron (nZVI) loaded on Biochar (BC) was prepared and characterized as hydrogen peroxide (H2O2) activator for the degradation of trichloroethylene (TCE). nZVI is homogeneously loaded on lamellarly structured BC surfaces to form nZVI/BC with specific surface area (SBET) of 184.91 m2 g−1, which can efficiently activate H2O2 to achieve TCE degradation efficiency of 98.9% with TOC removal of 78.2% within 30 min under the conditions of 0.10 mmol L−1 TCE, 1.13 g L−1 nZVI/BC and 1.50 mmol L−1 H2O2. Test results from the Electron Spin Resonance (ESR) measurement and coumarin based fluorescent probe technology indicated that ∙OH radicals were the dominant species responsible for the degradation of TCE within the nZVI/BC-H2O2 system. Activation mechanism of the redox action of Fe2+/Fe3+ generated under both aerobic and anaerobic conditions from nZVI and single electron transfer process from BC surface bound C–OH to H2O2 promoted decomposition of H2O2 into ∙OH radicals was proposed.

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Enhanced Fenton-like degradation of refractory organic compounds by surface complex formation of LaFeO3 and H2O2

Cited by 108 publications

References 35 publications

LaFeO3 ceramics as selective oxygen sensors at mild temperature

LaFeO3 ceramics as selective oxygen sensors at mild temperature

Effect of phosphate on heterogeneous Fenton oxidation of catechol by nano-Fe 3 O 4 : Inhibitor or stabilizer?

Enhanced Fenton-like Degradation of Trichloroethylene by Hydrogen Peroxide Activated with Nanoscale Zero Valent Iron Loaded on Biochar

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