TY - JOUR AU - Baeissa, E.S. PY - 2013/11/12 Y2 - 2024/03/29 TI - Fe2O3-SnO2 Nanocomposite for Photocatalytic Oxidation of Nitric Oxide JF - Asian Journal of Chemistry JA - ajc VL - 25 IS - 17 SE - Articles DO - 10.14233/ajchem.2013.15321 UR - https://asianpubs.org/index.php/ajchem/article/view/25_18_77 SP - 9779-9784 AB - <p style="text-align: justify;">A novel visible-light-activated Fe<sub>2</sub>O<sub>3</sub>-SnO<sub>2</sub> nanocomposite photocatalyst was prepared by co-precipitation method and characterized by X-ray diffraction, transmission electron microscopy, N<sub>2</sub> adsorption-desorption measurement and UV-visible diffuse reflectance spectroscopy. The results showed that a Fe<sub>2</sub>O<sub>3</sub> and SnO<sub>2</sub> were present in the composites. The characterization results found that the phase composition, crystallite size, BET surface area and optical absorption of the samples varied significantly with the molar ratio of Sn to Fe. The Fe<sub>2</sub>O<sub>3</sub>-SnO<sub>2</sub> photocatalyst (the molar ratio of Fe to Sn is 2:1) calcined at 550 ÂșC for 5 h exhibited maximum photocatalytic activity because it has a smaller band gap and a higher surface area of 120 m<sup>2</sup> g<sup>-1</sup>. Under visible-light irradiation, the degradation efficiency of nitric oxide reached 95.0 %, which is <em>ca.</em> 1.72 times higher than that of the nanoparticles SnO<sub>2</sub> (Aldrich).</p> ER -