Enhancement of photocatalytic properties of TiO 2 nanoparticles doped with CeO 2 and supported on SiO 2 for phenol degradation

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • Chunjing Hao
  • Jing Li
  • Zailei Zhang
  • Yongjun Ji
  • Hanhui Zhan
  • Fangxing Xiao
  • Dan Wang
  • Fabing Su

Detail(s)

Original languageEnglish
Article number29506
Pages (from-to)17-26
Journal / PublicationApplied Surface Science
Volume331
Publication statusPublished - 15 Mar 2015
Externally publishedYes

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-84924709710&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(a1eff756-3528-4f50-8282-3d2deb42a2f3).html

Abstract

Abstract A series of CeO 2 -TiO 2 and CeO 2 -TiO 2 /SiO 2 composites were prepared with TiCl 4 and Ce (NO 3 ) 3 ·6H 2 O as precursors via a facile co-precipitation method. The obtained samples were characterized by various techniques such as X-ray diffraction (XRD), nitrogen adsorption (N 2 -BET), Fourier transformation infrared spectrum (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-Vis spectroscopy measurements. The results indicated that TiO 2 doped with CeO 2 and supported on SiO 2 could reduce the crystallite size, inhibit the phase transformation, enhance the thermal stability, and effectively extend the spectral response from UV to visible range. When applied to the phenol photodegradation on a homemade batch reactor with an external cooling jacket, the CeO 2 -TiO 2 /SiO 2 catalysts exhibited significantly enhanced photodegradation efficiency in comparison with commercial Degussa P25 and CeO 2 -TiO 2 . The unique catalytic properties of CeO 2 -TiO 2 /SiO 2 were ascribed to improved electron-hole pairs separation efficiency and formation of more reactive oxygen species owing to the presence of Ce 3+ /Ce 4+ , as well as high dispersion of active component of CeO 2 -TiO 2 as a result of the introduction of SiO 2 support. Furthermore, the catalysts can be easily recovered from the reaction solution by centrifugation and reused for four cycles without significant loss of activity. © 2015 Elsevier B.V. All rights reserved.

Research Area(s)

  • CeO 2, Phenol, Photodegradation, SiO 2, TiO 2

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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Publication fingerprints text

100
Silica Keyphrases
100
Rutile Keyphrases
100
TiO2 Nanoparticles Keyphrases
100
Photocatalytic Prop... Keyphrases
100
Phenol Degradation Keyphrases
100
Nanoparticle Material Science
100
Titanium Oxide Material Science
100
doped materials INIS
100
silicon oxides INIS
100
cerium oxides INIS
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Citation Format(s)

[ RIS ] [ BibTeX ]
Enhancement of photocatalytic properties of TiO 2 nanoparticles doped with CeO 2 and supported on SiO 2 for phenol degradation. / Hao, Chunjing; Li, Jing; Zhang, Zailei et al.
In: Applied Surface Science, Vol. 331, 29506, 15.03.2015, p. 17-26.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review