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URN etd-0911117-141718 Statistics This thesis had been viewed 363 times. Download 0 times. Author Jun-Siang Jhan Author's Email Address No Public. Department Chemical Engineering Year 2016 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 91 Title Synthesis and Characterization of Hybrid Palladium Based Electrocatalysts Supported on Zirconium dioxide/Silver Modified Multi-Walled Carbon Nanotubes Keyword zirconia catalyst DFAFCs gold palladium silver silver palladium gold DFAFCs catalyst zirconia Abstract In recent years, due to the energy crisis, environmental awareness, to find possible energy alternatives for the current world trend, such as fuel cells are actively developing. DFAFCs (Direct Formic Acid Fuel Cells) are the main alternative energy sources for this lab. In order to promote the efficiency of DFAFCs, the preparation of good electrocatalytic performance with the stability of the nano - palladium catalyst as an anodic oxidation of formic acid catalyst is developed.
In order to improve the efficiency and avoid the problem of catalyst poisoning, the modified palladium catalyst is considered to have excellent electrocatalytic properties for DFAFCs. This study was carried out by using the national synchrotron radiation synthesis of palladium on acidification of multi-walled carbon nanotubes (AO-MWCNTs) and the use of zirconia modified acidified multi-walled carbon nanotubes carrier. The structure and surface morphology of the nanoparticles were analyzed by XRD, FESEM and HRTEM. The activity of the catalyst was determined by cyclic voltammetry.
The results showed that silver was successfully modified into tetragonal structure and the defects of AO-MWCNTs were reduced. Pd/AO-MWCNTs, Pd/Ag:AO-MWCNTs, Pd/ZrO2/AO-MWCNTs, Pd/ZrO2/Ag:AO-MWCNTs, AuPd/AO-MWCNTs, AuPd/Ag:AO-MWCNTs, AuPd/ZrO2/AO-MWCNTs, AuPd/ZrO2/Ag:AO-MWCNTs were successfully synthesized by X-ray method. Pd/AO-MWCNTs have the best performance.
Advisor Committee Yuh-Jing Chiou - advisor
Chung-Kwei Lin - co-chair
Hong-Ming Lin - co-chair
Wen-Chang Chen - co-chair
Yeu-Kuang Hwu - co-chair
Files Date of Defense 2017-07-05 Date of Submission 2017-09-11