CeO2-TiO2 as a visible light active catalyst for the photoreduction of CO2 to methanol

Hamidah Abdullah, Maksudur R. Khan, Manoj Pudukudy, Zahira Yaakob, Nur Aminatulmimi Ismail

Research output: Contribution to journalArticle

38 Citations (Scopus)

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).

Original languageEnglish
Pages (from-to)1155-1161
Number of pages7
JournalJournal of Rare Earths
Volume33
Issue number11
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Photocatalysts
Methanol
methanol
irradiation
catalyst
spectroscopy
Irradiation
Catalysts
Physisorption
Photoluminescence spectroscopy
anatase
Crystallite size
Ultraviolet spectroscopy
Field emission
optical property
X-ray spectroscopy
recombination
Structural properties
Energy gap
Nitrogen

Keywords

  • ceria
  • CO photoreduction
  • methanol
  • rare earths
  • TiO photocatalyst
  • visible light

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Chemistry(all)

Cite this

CeO2-TiO2 as a visible light active catalyst for the photoreduction of CO2 to methanol. / Abdullah, Hamidah; Khan, Maksudur R.; Pudukudy, Manoj; Yaakob, Zahira; Ismail, Nur Aminatulmimi.

In: Journal of Rare Earths, Vol. 33, No. 11, 01.11.2015, p. 1155-1161.

Research output: Contribution to journalArticle

Abdullah, Hamidah ; Khan, Maksudur R. ; Pudukudy, Manoj ; Yaakob, Zahira ; Ismail, Nur Aminatulmimi. / CeO2-TiO2 as a visible light active catalyst for the photoreduction of CO2 to methanol. In: Journal of Rare Earths. 2015 ; Vol. 33, No. 11. pp. 1155-1161.
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