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Open AccessArticle

A SnO2/CeO2 Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions

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Chemistry Department, Faculty of Science, Ain Shams University, Abbasia 11566, Cairo, Egypt
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Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA
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Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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Applied Organic Chemistry Department, National Research Center, Dokki 12622, Giza, Egypt
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Bioproducts Research Department, Zoology Department, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
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Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki 12622, Cairo, Egypt
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 254; https://doi.org/10.3390/nano10020254
Received: 10 January 2020 / Revised: 25 January 2020 / Accepted: 27 January 2020 / Published: 1 February 2020
A new SnO2/CeO2 nano-composite catalyst was synthesized, characterized and used for the removal of alizarin dyes from aqueous solutions. The composite material was prepared using a precipitation method. X-ray powder diffractometry (XRD), high resolution transmission electron microscopy (HR-TEM), Brunauer–Emmett–Teller methodology (BET) and Fourier Transform Infrared Spectrometry (ATR-FTIR) were utilized for the characterization of the prepared composite. The prepared nano-composite revealed high affinity for the adsorption and decomposition of alizarin dyes. The adsorption capacity under different experimental conditions (adsorbate concentration, contact time, adsorbent dose and pH) was examined. Under optimized experimental conditions, the removal of alizarin yellow, alizarin red and alizarin-3-methylimino-diacetic acid dyes from aqueous solutions was about 96.4%,87.8% and 97.3%, respectively. The adsorption isotherms agreed with the models of Langmuir, Freundlich and Temkin isotherms.
Keywords: tin oxide/cerium oxide; nano-composite; adsorption of dyes; alizarin dyes removal tin oxide/cerium oxide; nano-composite; adsorption of dyes; alizarin dyes removal
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MDPI and ACS Style

Hassan, S.S.M.; Kamel, A.H.; Hassan, A.A.; Amr, A.-G.; El-Naby, H.A.; Elsayed, E.A. A SnO2/CeO2 Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions. Nanomaterials 2020, 10, 254.

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