Cellulose beads supported CoFe2O4: A novel heterogeneous catalyst for efficient rhodamine B degradation via advanced oxidation processes

El Allaoui, Brahim; Benzeid, Hanane; Zari, Nadia; Qaiss, Abou el kacem; Bouhfid, Rachid

doi:10.1016/j.ijbiomac.2023.128893

Cited by 17 publications

(1 citation statement)

References 82 publications

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“…Various advanced oxidation technologies have been engineered to achieve environmentally friendly pollutant removal, including adsorption [14][15][16][17], electrocatalytic degradation [18][19][20], and photodegradation [21][22][23]. The ultimate goal is to degrade these organic contaminants into harmless substances like H 2 O and CO 2 [24][25][26]. To achieve this, researchers have focused on developing innovative photocatalysis methods, particularly utilizing common photocatalysts with wider energy bandgaps, including oxides with diverse crystalline structures [27].…”

Section: Introductionmentioning

confidence: 99%

Design of Bismuth Tungstate Bi2WO6 Photocatalyst for Enhanced and Environmentally Friendly Organic Pollutant Degradation

El Aouni,

El Ouardi,

Arab

et al. 2024

Materials

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In this study, a chemical precipitation approach was adopted to produce a photocatalyst based on bismuth tungstate Bi2WO6 for enhanced and environmentally friendly organic pollutant degradation. Various tools such as X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), optical spectroscopy and X-ray photoelectron spectroscopy, were employed to assess the structural and morphological properties. Hence, the XRD profiles showed a well crystallized Bi2WO6 orthorhombic phase. The photocatalytic performance of the resulting photocatalyst was assessed by the decomposition of Rhodamine B (RhB) and methyl orange (MO) with a decomposition efficiency of 97 and 92%, along with the highest chemical oxygen demand of 82 and 79% during 120 min of illumination, respectively. The principal novelty of the present work is to focus on the changes in the crystalline structure, the morphology, and the optical and the photoelectrochemical characteristics of the Bi2WO6, by tuning the annealing temperature of the designed photocatalyst. Such physicochemical property changes in the as-prepared photocatalyst will affect in turn its photocatalytic activity toward the organic pollutant decomposition. The photocatalytic mechanism was elaborated based on electrochemical impedance spectroscopy, photocurrent analysis, photoluminescence spectroscopy, and radical trapping measurements. The overall data indicate that the superoxide O2•− and holes h+ are the principal species responsible for the pollutant photodegradation.

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Section: Introductionmentioning

confidence: 99%

Design of Bismuth Tungstate Bi2WO6 Photocatalyst for Enhanced and Environmentally Friendly Organic Pollutant Degradation

El Aouni,

El Ouardi,

Arab

et al. 2024

Materials

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MXenes as Electrocatalysts for Energy Conversion Applications: Advances and Prospects

El Ouardi,

Ait Layachi,

Channab

et al. 2024

Adv Energy and Sustain Res

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Hydrogen as a potential future energy source provides a number of benefits in terms of sustainability, high energy density, and zero emissions. The production of hydrogen via water splitting is regarded as the cleanest and sustainable process. In contrast, fossil fuel combustion causes significant environmental problems through the production and release of secondary gases such as NOx, SO2, and CO2. It is vital to focus on reducing these harmful gases. CO2, a major pollutant produced by the combustion of fossil fuels and various human activities, plays a central role in the greenhouse effect and contributes to global warming. It is therefore imperative to actively eliminate and mitigate CO2 levels to preserve the global environment. MXenes and MXene‐based catalysts exhibit both outstanding hydrogen evolution reaction (HER) performance and CO2 reduction. In this review, recent progress is systematically examined and discussed in the preparation and utilization of MXenes as catalysts for HER and carbon dioxide reduction reaction (CO2RR). The discussion begins with a concise overview of the fabrication and characteristics of MXenes, followed by a comprehensive exploration of their efficacy as catalysts for HER and CO2RR.

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Process for cellulose-alginate core–shell microspheres fabrication and the influence of drying conditions on their structural and adsorption performances

El Allaoui,

Chakhtouna,

Zari

et al. 2024

Cellulose

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Cellulose beads supported CoFe2O4: A novel heterogeneous catalyst for efficient rhodamine B degradation via advanced oxidation processes

Cited by 17 publications

References 82 publications

Design of Bismuth Tungstate Bi2WO6 Photocatalyst for Enhanced and Environmentally Friendly Organic Pollutant Degradation

Design of Bismuth Tungstate Bi2WO6 Photocatalyst for Enhanced and Environmentally Friendly Organic Pollutant Degradation

MXenes as Electrocatalysts for Energy Conversion Applications: Advances and Prospects

Process for cellulose-alginate core–shell microspheres fabrication and the influence of drying conditions on their structural and adsorption performances

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