Synthesis of platinum single-crystal nanoparticles in water vapor

被引：3

作者：

Cheng, Ting ^{[1
]}

Parish, Chad M. ^{[1
]}

More, Karren L. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA

来源：

JOURNAL OF MATERIALS SCIENCE | 2013年 / 48卷 / 10期

关键词：

Platinum; Water vapor; HIGH-TEMPERATURE;

D O I：

10.1007/s10853-013-7184-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Platinum (Pt) nanoparticles have broad application in automobile pollution control, sensors, and fuel cells. Single-crystal platinum particles over the range of nano- to micron-meters were synthesized at the Pt/SiC interface in high pressure water vapor at 1200 A degrees C. These particles exhibited a cube-octahedral shape with predominant (111) facets. Formation of the Pt particles is likely due to water vapor-facilitated oxidation of the platinum silicide, resulting from the interaction between SiC and Pt. Well-aligned Pt single-crystal particles with sizes of tens to hundreds nanometers were obtained on the surface of arc-melted Pt2Si after exposure in flowing water vapor (90 cm/min) at 1200 A degrees C for 5 min. The potential applications of this finding are discussed.

引用

页码：3834 / 3840

页数：7

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