Photo-Fenton reaction and H2O2 enhanced photocatalytic activity of α-Fe2O3 nanoparticles obtained by a simple decomposition route

Liu, Jinsong; Asan, Onur; Li, Ziquan; Wu, Zhengying; Zhu, Kongjun; Zhuang, Jiajia; Xi, Qingyang; Hou, Yindi; Chen, Jiankang; Cong, Mengqi; Li, Jun; Qian, Guoming; Lin, Zhien

doi:10.1016/j.jallcom.2018.08.305

Cited by 57 publications

(13 citation statements)

References 45 publications

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“…It was confirmed that the photocatalytic performance of three types of α-Fe 2 O 3 nanoparticles was in the order of {113}> {104}> {001}. Liu et al [18] reported that the increase in sintering temperature of α-Fe 2 O 3 nanoparticles increased in methylene decomposition. They used α-Fe 2 O 3 nanoparticles synthesized by a simple sodium dodecyl sulfate-assisted grinding reaction and subsequent heating treatment process.…”

Section: Introductionmentioning

confidence: 80%

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Lee

Park

2020

Sustainability

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Hematite (α-Fe2O3)/graphitic carbon nitride (g-C3N4) nanofilm catalysts were synthesized on fluorine-doped tin oxide glass by hydrothermal and chemical vapor deposition. Scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy analyses of the synthesized catalyst showed that the nanoparticles of g-C3N4 were successfully deposited on α-Fe2O3 nanofilm. The methylene blue degradation efficiency of the α-Fe2O3/g-C3N4 composite catalyst was 2.6 times greater than that of the α-Fe2O3 single catalyst under ultraviolet (UV) irradiation. The methylene blue degradation rate by the α-Fe2O3/g-C3N4 catalyst increased by 6.5 times after 1 mM of hydrogen peroxide (H2O2) was added. The photo-Fenton reaction of the catalyst, UV, and H2O2 greatly increased the methylene blue degradation. The results from the scavenger experiment indicated that the main reactants in the methylene blue decomposition reaction are superoxide radicals photocatalytically generated by g-C3N4 and hydroxyl radicals generated by the photo-Fenton reaction. The α-Fe2O3/g-C3N4 nanofilm showed excellent reaction rate constants at pH 3 (Ka = 6.13 × 10−2 min−1), and still better efficiency at pH 7 (Ka = 3.67 × 10−2 min−1), compared to other methylene blue degradation catalysts. As an immobilized photo-Fenton catalyst without iron sludge formation, nanostructured α-Fe2O3/g-C3N4 are advantageous for process design compared to particle-type catalysts.

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Section: Introductionmentioning

confidence: 80%

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Lee

Park

2020

Sustainability

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“…5,6 Os processos oxidativos avançados (POA's), como a Reação de Fenton, são tratamentos em que são produzidos radicais livres, principalmente hidroxilas (•OH) altamente oxidantes, capazes de degradar, de forma não seletiva, inúmeros compostos levando à completa mineralização da matéria orgânica. [7][8][9][10][11][12] Na reação de Fenton a produção de radicais (•OH) ocorre a partir da decomposição do peróxido de hidrogênio catalisada por íons Fe(II) (equação 1), em meio ácido.…”

Section: Figura 1 Estrutura Molecular Do Corante íNdigo Carmimunclassified

“…Nesse tipo de reação o catalisador ferro encontra-se em fase sólida. Como fontes de ferro para a realização da reação Fenton heterogêneo tem-se os óxidos de ferro 14 (hematita 7,15 , magnetita e goetita 16 ), partículas de sílica contendo ferro 17 , íons imobilizados em matrizes sólidas como fibra de carbono ativada 18 e TI-HMS 19 ou adsorvidos em outras matrizes.…”

Section: Figura 1 Estrutura Molecular Do Corante íNdigo Carmimunclassified

Application of Fly Ash in Heterogeneous Fenton Reaction on the Degradation of Indigo Carmine Dye

et al. 2019

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Indigo carmine is a blue synthetic dye widely used in textile industry, as a food additive, in pharmaceutical industries, and as pH indicator. The use of this dye can leave to contamination of waste water and environment, damaging aquatic fauna and flora. An alternative for the treatment of water contaminated by dyes would be the degradation through oxidative processes. In this work, the indigo carmine degradation through a heterogeneous Fenton process using fly ash, an industrial waste, as Fe(II) source, was evaluated.. The dye final concentration was quantified by ultraviolet/visible light absorption spectroscopy. The optimal reaction conditions were determined using factorial design. The results showed that fly ash is able to remove approximately 42 % of the indigo carmine dye from solution without any pre-treatment.

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“…It has been reported that Fenton reaction, as an advanced oxidation technology, can be combined with photocatalysis to improve efficiency, − and semiconductor photocatalysts coupled with various iron-based materials is a typical solution to solve the Fe 3+ /Fe 2+ cycle problem in the conventional Fenton reaction. − Hu et al reported a novel FeOOH/Bi 2 MoO 6 photocatalyst with rich surface oxygen vacancies . The photocatalysis-Fenton degradation efficiency was 1.54 and 1.33 times that of photocatalysis and Fenton alone, respectively.…”

Section: Introductionmentioning

confidence: 99%

Ag and Fe₃O₄ Comodified WO_3 – x Nanocomposites for Catalytic Photothermal Degradation of Pharmaceuticals and Personal Care Products

Liao

Zhao

et al. 2021

ACS Appl. Nano Mater.

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Ag/Fe 3 O 4 /WO 3 − x nanocomposite photocatalysts, which consist of surface plasmon nanoparticle Ag, magnetically recoverable Fe 3 O 4 , and coral-like WO 3 − x , are constructed via two-step hydrothermal and photodeposition processes. The significantly strengthened photothermal catalytic-Fenton degradation performance under light irradiation is attributed to the formation of a hierarchical structure, as follows: (i) the unique 3D coral-like defective WO 3 − x nanorods possess the inherent properties of charge separation and can provide adequate surface active sites, while incident light is reflected multiple times within the nanorods to enhance light utilization; (ii) efficient photo-Fenton characteristics of Fe 3 O 4 nanomaterials with easy magnetic recovery and fast electron transfer emerging at the intimate interface of Fe 3 O 4 and WO 3 − x ; and (iii) the surface plasmon resonance (SPR) of Ag nanoparticles and photothermal effects. Radical scavenger experiments and electron spin resonance analysis indicated that •OH and •O 2 − are the main active species for the removal of broad-spectrum pharmaceuticals and personal care products. Furthermore, a possible photothermal catalytic-Fenton synergistic mechanism is proposed. This study will present novel deep insights into the design of photothermal catalytic-Fenton degradation systems using magnetically Fe 3 O 4 coupled WO 3 − x semiconductors and the SPR effect.

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Photo-Fenton reaction and H2O2 enhanced photocatalytic activity of α-Fe2O3 nanoparticles obtained by a simple decomposition route

Cited by 57 publications

References 45 publications

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Application of Fly Ash in Heterogeneous Fenton Reaction on the Degradation of Indigo Carmine Dye

Ag and Fe₃O₄ Comodified WO_3 – x Nanocomposites for Catalytic Photothermal Degradation of Pharmaceuticals and Personal Care Products

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Photo-Fenton reaction and H2O2 enhanced photocatalytic activity of α-Fe2O3 nanoparticles obtained by a simple decomposition route

Cited by 57 publications

References 45 publications

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Application of Fly Ash in Heterogeneous Fenton Reaction on the Degradation of Indigo Carmine Dye

Ag and Fe3O4 Comodified WO3 – x Nanocomposites for Catalytic Photothermal Degradation of Pharmaceuticals and Personal Care Products

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Product

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Ag and Fe₃O₄ Comodified WO_3 – x Nanocomposites for Catalytic Photothermal Degradation of Pharmaceuticals and Personal Care Products