Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi2WO6 for Rhodamine B Electro-Oxidation

Ait Ahsaine, Hassan; BaQais, Amal; Arab, Madjid; Bakiz, Bahcine; Benlhachemi, Abdeljalil

doi:10.3390/catal12111335

Open AccessFeature PaperArticle

Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation

by

Hassan Ait Ahsaine

^1,*

,

Amal BaQais

²

,

Madjid Arab

³

,

Bahcine Bakiz

⁴ and

Abdeljalil Benlhachemi

⁴

¹

Laboratoire de Chimie Appliquée des Matériaux, Faculty of Sciences, Mohammed V University in Rabat, Rabat BP 1014, Morocco

²

Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia

³

Aix Marseille University, University Toulon, CNRS, IM2NP, CS 60584, CEDEX 9, F-83041 Toulon, France

⁴

Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Université Ibn Zohr, Cité Dakhla, Agadir BP 8106, Morocco

^*

Author to whom correspondence should be addressed.

Catalysts 2022, 12(11), 1335; https://doi.org/10.3390/catal12111335

Submission received: 28 September 2022 / Revised: 18 October 2022 / Accepted: 24 October 2022 / Published: 1 November 2022

(This article belongs to the Special Issue Nanostructured Materials Used for Catalytic Treatment of Hazardous Organic Dye Polluted Wastewater)

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Abstract

Herein, we have synthesized different BWO samples at different temperatures and evaluated their electrochemical oxidation of Rhodamine B dye in an aqueous medium. The prepared samples were characterized using X-ray diffraction combined with Rietveld refinements, scanning electron microscope coupled with energy dispersive elemental mapping, and thermogravimetric and differential thermal analyses. All the samples crystallize in the orthorhombic Pca2₁ structure. The crystallite size increased with temperature. The calculated surface areas from the XRD data ranged from 38 to 7 m² g⁻¹ for BWO-600 to BWO-900, respectively. The optimal BWO loadings on the GCE electrode were 5 × 10⁻⁸ mol cm⁻² recording the best electrocatalytic efficiency for RhB electrodegradation in 15 min (100%) in 0.1 M of NaCl. The BWO-600 recorded the best activity compared to other BWO samples. The electrocatalytic activity was explained by the high surface area and small crystallite size compared to the other samples. The BWO-600 showed extended electrode reutilization for up to four cycles of reuse under the reported conditions.

Keywords: electrochemical degradation; Rhodamine B; hydroxyl radicals; bismuth tungstate; electrode

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MDPI and ACS Style

Ait Ahsaine, H.; BaQais, A.; Arab, M.; Bakiz, B.; Benlhachemi, A. Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation. Catalysts 2022, 12, 1335. https://doi.org/10.3390/catal12111335

AMA Style

Ait Ahsaine H, BaQais A, Arab M, Bakiz B, Benlhachemi A. Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation. Catalysts. 2022; 12(11):1335. https://doi.org/10.3390/catal12111335

Chicago/Turabian Style

Ait Ahsaine, Hassan, Amal BaQais, Madjid Arab, Bahcine Bakiz, and Abdeljalil Benlhachemi. 2022. "Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation" Catalysts 12, no. 11: 1335. https://doi.org/10.3390/catal12111335

APA Style

Ait Ahsaine, H., BaQais, A., Arab, M., Bakiz, B., & Benlhachemi, A. (2022). Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation. Catalysts, 12(11), 1335. https://doi.org/10.3390/catal12111335

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Synthesis and Electrocatalytic Activity of Bismuth Tungstate Bi₂WO₆ for Rhodamine B Electro-Oxidation

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