In situ surface modification of colloidal TiO2 nanoparticles with catechol

In situ surface modification of colloidal TiO2 nanoparticles with catechol TiO2 was in situ surface-modified in the hydrolysis of TBOT with catechol to improve its photocatalytic activity. Powder X-ray diffraction (XRD), X-ray photoelectron spectrum analysis (XPS), Fourier transform infrared spectra, thermogravimetric analysis, and UV–Vis diffuse reflectance spectra were carried out to characterize the composites with different catechol contents and different preparation temperatures. The photocatalytic degradation of Acid Orange 7 was chosen as a model reaction to evaluate the photocatalytic activities of the modified catalysts. Results showed that TiO2 nanoparticles were chemically modified by catechol leading to the shifting of the onset wavelength of the optical absorption in the visible range. The modification did not change the crystalline structure of the TiO2 nanoparticles according to the XRD patterns. Through XPS analyses, it was confirmed that the catechol was anchored and saturated on the TiO2 surface by reacting with the surface hydroxyl to form a bidentate mononuclear structure. The photocatalytic studies suggested that the in situ-modified TiO2 photocatalysts showed enhanced photocatalytic efficiency compared to the pure TiO2 under visible-light irradiation. The optimum preparation condition was found at a weight ratio of 4.0 wt% (catechol/TiO2). Research on Chemical Intermediates Springer Journals

In situ surface modification of colloidal TiO2 nanoparticles with catechol

Loading next page...
Springer Netherlands
Copyright © 2013 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
Publisher site
See Article on Publisher Site


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

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial