nanomaterials Article A SnO2/CeO2 Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions Saad S. M. Hassan 1,*, Ayman H. Kamel 1,* , Amr A. Hassan 1,2 , Abd El-Galil E. Amr 3,4,* , Heba Abd El-Naby 1 and Elsayed A. Elsayed 5,6 1 Chemistry Department, Faculty of Science, Ain Shams University, Abbasia 11566, Cairo, Egypt;
[email protected] (A.A.H.);
[email protected] (H.A.E.-N.) 2 Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA 3 Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia 4 Applied Organic Chemistry Department, National Research Center, Dokki 12622, Giza, Egypt 5 Bioproducts Research Department, Zoology Department, Faculty of Science, King Saud University, Riyadh 11451, Saudi Arabia;
[email protected] 6 Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki 12622, Cairo, Egypt * Correspondence:
[email protected] (S.S.M.H.);
[email protected] (A.H.K.);
[email protected] (A.E.-G.E.A.); Tel.: +20-1222162766 (S.S.M.H.); +20-1000743328 (A.H.K.); +966-565-148-750 (A.E.-G.E.A.) Received: 10 January 2020; Accepted: 27 January 2020; Published: 1 February 2020 Abstract: 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.