Document Detail

Photocatalytic oxidation of NOx gases using TiO2: a surface spectroscopic approach.
MedLine Citation:
PMID:  12395856     Owner:  NLM     Status:  MEDLINE    
The bandgap of solid-state TiO2 (3.2 eV) enables it to be a useful photocatalyst in the ultraviolet (lambda < 380 nm) region of the spectrum. A clean TiO2 surface in the presence of sunlight therefore enables the removal of harmful NOx gases from the atmosphere by oxidation to nitrates. These properties, in addition to the whiteness, relative cheapness and non-toxicity, make TiO2 ideal for the many de-NOX catalysts that are currently being commercially exploited both in the UK and Japan for concrete paving materials in inner cities. There is need, however, for further academic understanding of the surface reactions involved. Hence, we have used surface specific techniques, including X-ray photoelectron spectroscopy and Raman spectroscopy, to investigate the NOx adsorbate reaction at the TiO2 substrate surface.
J S Dalton; P A Janes; N G Jones; J A Nicholson; K R Hallam; G C Allen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  120     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2002  
Date Detail:
Created Date:  2002-10-24     Completed Date:  2003-03-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  415-22     Citation Subset:  IM    
Interface Analysis Centre, University of Bristol, UK.
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MeSH Terms
Air Pollutants / chemistry*
Ammonia / chemistry
Environmental Health*
Microscopy, Electron, Scanning
Nitrogen Oxides / chemistry*
Spectrometry, X-Ray Emission
Spectrum Analysis, Raman
Titanium / chemistry*
Ultraviolet Rays
Reg. No./Substance:
0/Air Pollutants; 0/Nitrogen Oxides; 13463-67-7/titanium dioxide; 7440-32-6/Titanium; 7664-41-7/Ammonia

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

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