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Pt/C doped TiO2/SWNTs as catalyst for methanol oxidation.

C Theerakarunwong¹, Z F Ma, S Phanichphant

¹Department of Science, Faculty of Science and Technology, Rajabhat Nakhon Sawan University, 60000, Nakhon Sawan, Thailand.

Journal of Nanoscience and Nanotechnology

|August 3, 2012

Summary

Platinum/carbon doped titanium dioxide/single-walled carbon nanotubes (Pt/C/TiO2/SWNTs) composite catalysts show enhanced catalytic oxidation of methanol. The TiO2/SWNTs support improves catalytic properties compared to undoped or Pt/C doped materials.

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Area of Science:

Materials Science
Catalysis
Nanotechnology

Background:

Titanium dioxide (TiO2) and single-walled carbon nanotubes (SWNTs) are crucial nanomaterials.
Composite catalysts enhance material properties and catalytic activity.
Developing efficient catalysts for methanol oxidation is vital for energy applications.

Purpose of the Study:

To synthesize and characterize novel platinum/carbon doped titanium dioxide/single-walled carbon nanotubes (Pt/C/TiO2/SWNTs) composite catalysts.
To investigate the catalytic performance of these composites in methanol oxidation.
To evaluate the role of TiO2/SWNTs as a catalyst support.

Main Methods:

Preparation of Pt/C/TiO2/SWNTs composite catalysts using a blending method.
Characterization of the composite structure using transmission electron microscopy (TEM).
Evaluation of catalytic activity through methanol oxidation reactions.

Main Results:

Successful synthesis of Pt/C/TiO2/SWNTs with anatase TiO2 structure and uniform Pt/C distribution.
Confirmation of SWNTs presence via TEM.
Enhanced catalytic oxidation of methanol observed for Pt/C/TiO2/SWNTs compared to undoped and Pt/C doped materials.

Conclusions:

TiO2/SWNTs serve as an effective support, significantly enhancing the catalytic properties of Pt/C.
The developed Pt/C/TiO2/SWNTs composite catalysts exhibit superior performance in methanol oxidation.
This research offers a promising pathway for advanced catalyst development in electrochemical applications.