Synthesis and photocatalytic activity of V-doped mesoporous TiO2 photosensitized with porphyrin supported by SBA-15

Synthesis and photocatalytic activity of V-doped mesoporous TiO2 photosensitized with porphyrin... A highly efficient photocatalyst was produced by immobilizing V-doped mesoporous TiO2/tetrakis(4-carboxyphenyl)porphyrin (V-TiO2/TCPP) onto SBA-15 walls, and was then investigated for photodecomposition of 2,4-dichlorophenol (2,4-DCP) in aqueous solutions. In the present paper, first, in order to activate titanium dioxide by visible light, the TiO2 mesoporous was doped by vanadium (V-TiO2) and then it was sensitized by tetrakis(4-carboxyphenyl)porphyrin (TCPP). To improve the photocatalytic activity of the prepared catalyst, SBA-15 was functionalized with the prepared V-TiO2/TCPP by pre-anchorage of 3-(aminopropyl)-triethoxysilane via post-synthesis method (V-TiO2/TCPP/SBA). The obtained materials were characterized by UV–Vis absorption, FT-IR spectroscopy, diffuse reflectance (DRS), scanning electron microscopy, X-Ray diffraction, and N2 adsorption–desorption. Furthermore, a comparative study on the photodegradation of 2,4-DCP between V-TiO2/TCPP/SBA and V-TiO2/TCPP composites was performed and the role of SBA-15 was investigated. The results showed that the decomposition efficiency of the 2,4-DCP by using the V-TiO2/TCPP/SBA was much more than that of applying TCPP/V-TiO2 in high initial concentration of pollutant (up to 99 % in 300 mg/L). In addition, the photocatalytic degradations of 2,4-DCP using above photocatalysts all followed a first-order kinetic model. The V-TiO2/TCPP/SBA was recycled four times without significant loss of photocatalytic activity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Synthesis and photocatalytic activity of V-doped mesoporous TiO2 photosensitized with porphyrin supported by SBA-15

Loading next page...
 
/lp/springer_journal/synthesis-and-photocatalytic-activity-of-v-doped-mesoporous-tio2-F1wU8yxnmg
Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2222-z
Publisher site
See Article on Publisher Site

Abstract

A highly efficient photocatalyst was produced by immobilizing V-doped mesoporous TiO2/tetrakis(4-carboxyphenyl)porphyrin (V-TiO2/TCPP) onto SBA-15 walls, and was then investigated for photodecomposition of 2,4-dichlorophenol (2,4-DCP) in aqueous solutions. In the present paper, first, in order to activate titanium dioxide by visible light, the TiO2 mesoporous was doped by vanadium (V-TiO2) and then it was sensitized by tetrakis(4-carboxyphenyl)porphyrin (TCPP). To improve the photocatalytic activity of the prepared catalyst, SBA-15 was functionalized with the prepared V-TiO2/TCPP by pre-anchorage of 3-(aminopropyl)-triethoxysilane via post-synthesis method (V-TiO2/TCPP/SBA). The obtained materials were characterized by UV–Vis absorption, FT-IR spectroscopy, diffuse reflectance (DRS), scanning electron microscopy, X-Ray diffraction, and N2 adsorption–desorption. Furthermore, a comparative study on the photodegradation of 2,4-DCP between V-TiO2/TCPP/SBA and V-TiO2/TCPP composites was performed and the role of SBA-15 was investigated. The results showed that the decomposition efficiency of the 2,4-DCP by using the V-TiO2/TCPP/SBA was much more than that of applying TCPP/V-TiO2 in high initial concentration of pollutant (up to 99 % in 300 mg/L). In addition, the photocatalytic degradations of 2,4-DCP using above photocatalysts all followed a first-order kinetic model. The V-TiO2/TCPP/SBA was recycled four times without significant loss of photocatalytic activity.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Aug 21, 2015

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 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

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