Document Detail


Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania.
MedLine Citation:
PMID:  18674860     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Nitrogen-doped titania nanoparticles consisting of pure anatase, pure rutile and bicrystallites (anatase+rutile and anatase+brookite) have been prepared in TiCl(3)-HMT (hexamethylene tetramine)-alcohol solution under solvothermal process. The effect of the solvent type and amount of HMT as pH adjuster on the phase composition of titania and its visible photocatalytic activity for degradation to MO (methyl orange) was investigated. It is found that anatase gradually transferred to rutile with increase of carbon chain using methanol, ethanol, 1-propanol and 1-butanol as solvent. The pure anatase formed at the pH value of 1-2, while bicrystalline titania (anatase+rutile and anatase+brookite) at that of 7-10 in the presence of methanol. The bicrystalline (anatase+brookite) titania have the best visible photocatalytic activity among all the samples. The -(NO) and -(NH) dopants with an N (1s) binding energy of 400 eV may have positive effects on the visible light photocatalytic activity.
Authors:
Jianjun Liu; Wei Qin; Shengli Zuo; Yingchun Yu; Zhengping Hao
Publication Detail:
Type:  Journal Article     Date:  2008-07-01
Journal Detail:
Title:  Journal of hazardous materials     Volume:  163     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-01-26     Completed Date:  2009-04-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  273-8     Citation Subset:  IM    
Affiliation:
Faculty of Sciences, Beijing University of Chemical Technology, Beijing 100029, China. jjliu717@yahoo.com.cn
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MeSH Terms
Descriptor/Qualifier:
Catalysis
Microscopy, Electron, Transmission
Nitrogen / chemistry*
Phase Transition*
Photochemical Processes*
Solubility
Temperature*
Titanium / chemistry*
X-Ray Diffraction
Chemical
Reg. No./Substance:
13463-67-7/titanium dioxide; 7440-32-6/Titanium; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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