Preparation and characterization of nanostructured TiO2 thin film codoped with nitrogen and vanadium on glass surface by sol–gel dip-coating method

Preparation and characterization of nanostructured TiO2 thin film codoped with nitrogen and... To enhance hydrophilicity and photocatalytic activity, N-doped and N–V-codoped TiO2 films were coated on glass substrates by the sol–gel dip-coating method. The substrates were previously coated with SiO2 using the same method. The coated samples, after annealing at 450 °C for 30 min in air, were analyzed by an X-ray diffractometer, scanning electron microscope, Fourier transform infrared spectroscope, X-ray photoelectron spectroscope, and UV–visible spectroscope. The SiO2/N–V-codoped TiO2 photocatalyst showed a narrower band gap (2.93 eV) compared to the SiO2/N-doped. Degradation tests, methyl orange under UV light and stearic acid under visible light, were performed in order to evaluate photocatalytic activity. It was observed that the SiO2/N–V-codoped photocatalyst was significantly better than the SiO2/N-doped TiO2. The presence of V and N in the TiO2 lattice motivated isolated energy levels near the conduction and valence bands, respectively, resulting in a narrowing of the band gap. Moreover, both of the energy levels could act as traps for photoexcited holes and electrons, reducing the recombination rate of charges, thus improving the photocatalytic activity of SiO2/N–V-codoped TiO2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Preparation and characterization of nanostructured TiO2 thin film codoped with nitrogen and vanadium on glass surface by sol–gel dip-coating method

Loading next page...
 
/lp/springer_journal/preparation-and-characterization-of-nanostructured-tio2-thin-film-L6Is9CjTT1
Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1816-1
Publisher site
See Article on Publisher Site

Abstract

To enhance hydrophilicity and photocatalytic activity, N-doped and N–V-codoped TiO2 films were coated on glass substrates by the sol–gel dip-coating method. The substrates were previously coated with SiO2 using the same method. The coated samples, after annealing at 450 °C for 30 min in air, were analyzed by an X-ray diffractometer, scanning electron microscope, Fourier transform infrared spectroscope, X-ray photoelectron spectroscope, and UV–visible spectroscope. The SiO2/N–V-codoped TiO2 photocatalyst showed a narrower band gap (2.93 eV) compared to the SiO2/N-doped. Degradation tests, methyl orange under UV light and stearic acid under visible light, were performed in order to evaluate photocatalytic activity. It was observed that the SiO2/N–V-codoped photocatalyst was significantly better than the SiO2/N-doped TiO2. The presence of V and N in the TiO2 lattice motivated isolated energy levels near the conduction and valence bands, respectively, resulting in a narrowing of the band gap. Moreover, both of the energy levels could act as traps for photoexcited holes and electrons, reducing the recombination rate of charges, thus improving the photocatalytic activity of SiO2/N–V-codoped TiO2.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 2, 2014

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off