One-Pot Synthesis of Pt/Carbon Nanotubes by Self-Regulated Reduction for Electrocatalysis

被引：3
作者：
Lee, Chien-Liang [1 ]
Wu, Shi-Chi [1 ]
机构：
[1] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 807, Taiwan
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 07期
关键词：
Pt Nanoparticles; Catalyst; Fuel Cell; Methanol Electrooxidation; MULTIWALLED CARBON NANOTUBES; PLATINUM NANOPARTICLES; SUPPORTED PLATINUM; METAL NANOPARTICLES; METHANOL OXIDATION; OXYGEN REDUCTION; HIGH DISPERSION; FUEL-CELLS; CATALYSTS; ACID;
D O I：
10.1166/jnn.2010.1680
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This paper describes a method for size-controlled synthesis of Pt nanoparticles and their attachment to the sidewalls of multiwall carbon nanotubes (CNTs) by self-regulated reduction of sodium n-dodecyl sulfate (SDS), without surface pretreatment. The size of the Pt nanoparticles is controlled by adjusting the concentration of SDS. When Pt/CNTs are heated to 500 degrees C in N(2) atmosphere, Pt nanochains are formed on the CNTs; some of these nanochains contain small islands. Electrochemical measurements confirm that the electroactivities of the Pt/CNT nanocatalysts increase with a decrease in the size of the Pt nanoparticles. Additionally, comparing with the heated Pt/CNT nanocatalysts containing smooth Pt nanochains, the heated Pt/CNT nanocatalysts containing Pt nanochains with small Pt islands show higher electrocatalysis activities and stability.
引用
收藏
页码：4650 / 4656
页数：7
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