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

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

doi:10.1016/j.apsusc.2015.01.069

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

Chunjing Hao
, Jing Li
, Zailei Zhang
, Yongjun Ji^*
, Hanhui Zhan
, Fangxing Xiao
, Dan Wang
, Bin Liu
, Fabing Su

^*Corresponding author for this work

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

95 Citations (Scopus)

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.

Original language	English
Article number	29506
Pages (from-to)	17-26
Journal	Applied Surface Science
Volume	331
DOIs	https://doi.org/10.1016/j.apsusc.2015.01.069
Publication status	Published - 15 Mar 2015
Externally published	Yes

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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].

Research Keywords

CeO 2
Phenol
Photodegradation
SiO 2
TiO 2

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@article{a1eff75635284f5082823d2deb42a2f3,

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

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. {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

keywords = "CeO 2, Phenol, Photodegradation, SiO 2, TiO 2",

author = "Chunjing Hao and Jing Li and Zailei Zhang and Yongjun Ji and Hanhui Zhan and Fangxing Xiao and Dan Wang and Bin Liu and Fabing Su",

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]. ",

year = "2015",

month = mar,

day = "15",

doi = "10.1016/j.apsusc.2015.01.069",

language = "English",

volume = "331",

pages = "17--26",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Enhancement of photocatalytic properties of TiO 2 nanoparticles doped with CeO 2 and supported on SiO 2 for phenol degradation

AU - Hao, Chunjing

AU - Li, Jing

AU - Zhang, Zailei

AU - Ji, Yongjun

AU - Zhan, Hanhui

AU - Xiao, Fangxing

AU - Wang, Dan

AU - Liu, Bin

AU - Su, Fabing

N1 - 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].

PY - 2015/3/15

Y1 - 2015/3/15

N2 - 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.

AB - 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.

KW - CeO 2

KW - Phenol

KW - Photodegradation

KW - SiO 2

KW - TiO 2

UR - https://www.scopus.com/pages/publications/84924709710

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84924709710&origin=recordpage

U2 - 10.1016/j.apsusc.2015.01.069

DO - 10.1016/j.apsusc.2015.01.069

M3 - RGC 21 - Publication in refereed journal

SN - 0169-4332

VL - 331

SP - 17

EP - 26

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 29506

ER -