Nanostructured TiO2/polypyrrole for visible light photocatalysis

Nada M. Dimitrijevic, Sanja Tepavcevic, Yuzi Liu, Tijana Rajh, Sunshine C. Silver, David M. Tiede

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

Stable TiO2/polypyrrole nanocomposites have been synthesized by a simple one-step hydrothermal method. The nanocomposites are capable of efficient visible-light photocatalysis driven by their morphology that utilizes a high concentration of 4.5 nm TiO2 nanoparticles electronically coupled to 200-300 nm polypyrrole granules. The polypyrrole acts as visible-light photosensitizer, and the photoactivity of nanocomposite arises from the electron transfer from excited polypyrrole to TiO2 nanoparticles and further across nanocomposite interface. The visible-light photocatalysis is demonstrated by methylene blue degradation and by the production of H2 from water with efficiency of 1 mmol H2 gcatalyst-1 h-1 wt %(Pt)-1.

Original languageEnglish (US)
Pages (from-to)15540-15544
Number of pages5
JournalJournal of Physical Chemistry C
Volume117
Issue number30
DOIs
StatePublished - Aug 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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