Title :
High efficient nanocatalysts synthesis by a semi-reflux chemical reduction system
Author :
Wu, Yi-Shiuan ; Gong, Shin-Mei ; Wang, Chun-Hsien ; Peng, Hsien-Chih ; Tsai, Ming-Chi ; Yeh, Tsung-Kuang ; Tseng, Fan-Gan
Author_Institution :
Dept. of Eng. & Syst. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Pt is one of the most employed catalysts for methanol catalysis in direct methanol fuel cell (DMFC). In this study, carbon nanotube (CNT) surface was used for catalyst reduction. By using ethylene glycol as a reducing agent, Pt catalyst precursor (H2PtCl6 · 6H2O) was reduced on the CNTs by a novel method called semi-reflux chemical reduction system (SRCRS). The SRCRS can effectively reduce the catalyst preparation time and the catalyst distribution density can also be much increased by adjusting the pH value. Cyclic voltammetry (CV) and ICP-MS results were used for electrochemical surface area (ECA) calculation. The ECA result was comparable to that of commercial available Pt.
Keywords :
carbon nanotubes; catalysis; direct methanol fuel cells; nanofabrication; reduction (chemical); voltammetry (chemical analysis); C; carbon nanotube surface; catalyst distribution density; catalyst precursor; catalyst preparation; catalyst reduction; cyclic voltammetry; direct methanol fuel cell; electrochemical surface area calculation; ethylene glycol; high efficient nanocatalysts synthesis; methanol catalysis; pH value; semireflux chemical reduction system; CNT; DMFC; SRCRS; pH value;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2010 5th IEEE International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-6543-9
DOI :
10.1109/NEMS.2010.5592251
