Nanostructured TiO2/polypyrrole for visible light photocatalysis

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

doi:10.1021/jp405562b

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 journal › Article › peer-review

113 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 g_catalyst^-1 h^-1 wt %(Pt)^-1.

Original language	English (US)
Pages (from-to)	15540-15544
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	117
Issue number	30
DOIs	https://doi.org/10.1021/jp405562b
State	Published - Aug 1 2013
Externally published	Yes

ASJC Scopus subject areas

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

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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.",

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T1 - Nanostructured TiO2/polypyrrole for visible light photocatalysis

AU - Dimitrijevic, Nada M.

AU - Tepavcevic, Sanja

AU - Liu, Yuzi

AU - Rajh, Tijana

AU - Silver, Sunshine C.

AU - Tiede, David M.

PY - 2013/8/1

Y1 - 2013/8/1

N2 - 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.

AB - 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.

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Nanostructured TiO₂/polypyrrole for visible light photocatalysis

Abstract

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