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Enhancement of photocatalytic properties of TiO2 nanoparticles doped with CeO2 and supported on SiO2 for phenol degradation
Hao, Chunjing1,2; Li, Jing2; Zhang, Zailei2; Ji, Yongjun2; Zhan, Hanhui1; Xiao, Fangxing3; Wang, Dan2; Liu, Bin3; Su, Fabing2
2015-03-15
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume331Issue:MARPages:17-26
Abstract

A series of CeO2-TiO2 and CeO2-TiO2/SiO2 composites were prepared with TiCl4 and Ce (NO3)(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 TiO2 doped with CeO2 and supported on SiO2 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 CeO2-TiO2/SiO2 catalysts exhibited significantly enhanced photodegradation efficiency in comparison with commercial Degussa P25 and CeO2-TiO2. The unique catalytic properties of CeO2-TiO2/SiO2 were ascribed to improved electron-hole pairs separation efficiency and formation of more reactive oxygen species owing to the presence of Ce3+/Ce4+, as well as high dispersion of active component of CeO2-TiO2 as a result of the introduction of SiO2 support. Furthermore, the catalysts can be easily recovered from the reaction solution by centrifugation and reused for four cycles without significant loss of activity. (C) 2015 Elsevier B.V. All rights reserved.

KeywordTio2 Ceo2 Sio2 Photodegradation Phenol
SubtypeArticle
Subject AreaChemistry ; Materials Science ; Physics
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.apsusc.2015.01.069
Indexed BySCI
Language英语
WOS KeywordSelective Catalytic-reduction ; Visible-light ; Titanium-dioxide ; Organic Pollutants ; Activated Carbon ; Water ; Oxidation ; Silica ; Composite ; Temperature
Funding ProjectNational Natural Science Foundation of China [21031005] ; Hundred Talents Program of the Chinese Academy of Sciences
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000350145700003
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13807
Collection研究所(批量导入)
Corresponding AuthorJi, Yongjun
Affiliation1.CUMT, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Jiangsu, Peoples R China
2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
3.Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
Recommended Citation
GB/T 7714
Hao, Chunjing,Li, Jing,Zhang, Zailei,et al. Enhancement of photocatalytic properties of TiO2 nanoparticles doped with CeO2 and supported on SiO2 for phenol degradation[J]. APPLIED SURFACE SCIENCE,2015,331(MAR):17-26.
APA Hao, Chunjing.,Li, Jing.,Zhang, Zailei.,Ji, Yongjun.,Zhan, Hanhui.,...&Su, Fabing.(2015).Enhancement of photocatalytic properties of TiO2 nanoparticles doped with CeO2 and supported on SiO2 for phenol degradation.APPLIED SURFACE SCIENCE,331(MAR),17-26.
MLA Hao, Chunjing,et al."Enhancement of photocatalytic properties of TiO2 nanoparticles doped with CeO2 and supported on SiO2 for phenol degradation".APPLIED SURFACE SCIENCE 331.MAR(2015):17-26.
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