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CeO2-TiO2 as a Visible Light Active Catalyst for the Photoreduction of CO2 to Methanol

Hamidah, Abdullah and Khan, Maksudur R. and Manoj, Pudukudya and Zahira, Yaakob and Nur Aminatulmimi, Ismail (2015) CeO2-TiO2 as a Visible Light Active Catalyst for the Photoreduction of CO2 to Methanol. Journal of Rare Earths, 33 (11). pp. 1155-1161. ISSN 1002-0721

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Abstract

The performance of CeO2-TiO2 photocatalyst for the photocatalytic reduction of CO2 into methanol was studied under visible light irradiation. The as-prepared catalysts were characterized for their structural, textural and optical properties using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), nitrogen physisorption analysis, UV-vis spectroscopy and photoluminescence (PL) spectroscopy. The characterization results indicated that the presence of CeO2 stabilized the anatase phase of TiO2, decreased its crystallite size, increased the surface area, reduced the band gap energy and lowered the rate of electron-hole pair recombination. The CeO2-TiO2 photocatalyst showed an increased methanol yield of 18.6 µmol/g under visible light irradiation, compared to the bare TiO2 (6.0 µmol/g).

Item Type: Article
Uncontrolled Keywords: ceria; TiO2 photocatalyst; CO2 photoreduction; visible light; methanol; rare earths
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 29 Dec 2015 07:11
Last Modified: 27 Mar 2018 04:18
URI: http://umpir.ump.edu.my/id/eprint/11571
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