Back to Search
Start Over
Photocatalytic Reduction of CO2 to Methane on Pt/TiO2 Nanosheet Porous Film.
- Source :
- Advances in Condensed Matter Physics; 2014, p1-6, 6p
- Publication Year :
- 2014
-
Abstract
- Anatase TiO<subscript>2</subscript> nanosheet porous films were prepared by calcination of the orthorhombic titanic acid films at 400°C. They showed an excellent photocatalytic activity for CO<subscript>2</subscript> photoreduction to methane, which should be related to their special porous structure and large Brunauer-Emmett-Teller (BET) surface area. In order to further improve the photocatalytic activity, Pt nanoparticles were loaded uniformly with the average size of 3-4nm on TiO<subscript>2</subscript> porous films by the photoreduction method. It was found that the loading of Pt expanded the light absorption ability of the porous film and improved the transformation efficiency of CO<subscript>2</subscript> to methane. The conversion yield of CO<subscript>2</subscript> to methane on Pt/TiO<subscript>2</subscript> film reached 20.51 ppm/h·cm<superscript>2</superscript>.The Pt/TiO<subscript>2</subscript> nanosheet porous film was characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and ultraviolet-visible light diffuse reflectance spectra (UV-vis DRS). Moreover, the transient photocurrent-time curves showed that the Pt/TiO<subscript>2</subscript> nanosheet porous film exhibited higher photocurrent, indicating that the higher separation efficiency of the photogenerated charge carriers was achieved. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16878108
- Database :
- Complementary Index
- Journal :
- Advances in Condensed Matter Physics
- Publication Type :
- Academic Journal
- Accession number :
- 100292833
- Full Text :
- https://doi.org/10.1155/2014/316589