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The defense date of the thesis is 2009-07-13
The current date is 2019-07-19
URN etd-0706109-111132 Statistics This thesis had been viewed 1522 times. Download 4 times. Author Dai-Yan Chen Author's Email Address firstname.lastname@example.org Department Materials Engineering Year 2008 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 80 Title Multi-Walled Carbon Nanotubes Supported Palladium-based Material in Electrocatalysis Applications Keyword formic acid catalytic performance catalytic catalytic catalytic performance formic acid Abstract The motivation of this study is to synthesis catalytic nanomaterials and to explore the structure and catalytic properties of the these materials used in electrocatalytic reaction. The purified multi-walled carbon nanotubes have the acid functional groups and defects on the surface that makes easy to attach metals or oxides on carbon nanotubes. High thermal conductivity and surface area of the multi-walled carbon nanotubes (MWCNTs) have been used as supporter to support nano Pd and Au-Pd particles by polyol process using PdCl3 and HAuCl4.4H2O as precursors.
The preparation and characterization of palladium/multi-walled carbon nanotubes (Pd/MWCNTs) and gold/palladium/multi-walled carbon nanotubes (Au-Pd/MWCNTs) hybrid materials towards formic acid oxidation are examined in this research. The structures of the resulting nano-catalyst composite materials are analyzed by X-ray diffraction (XRD) patterns. Thermogravimetry Analyzer (TGA) is used to determine the contents of metal catalyst in the hybrid materials. Scanning Electron Microscope (SEM) and High Resolution Transmission electron microscope (HRTEM) are applied to image the morphologies, structures, sizes and the dispersion of nano catalysts. For the results of electrochemical oxidation reaction, the multi-walled carbon nanotubes supported palladium-based materials have the better electro-oxidation behavior and suppress the poison of CO on catalysts. From the saturation to the steady-state current experiment, it indicates the Au-Pd/MWCNTs catalyst has better catalytic performance with high steady state reaction current.
Advisor Committee Hong-Ming Lin - advisor
Files Date of Defense 2009-06-22 Date of Submission 2009-07-13