A Facile Synthesis of Monodisperse Au Nanoparticles and Their Catalysis of CO Oxidation

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Nano Reserch

OSTI ID:1043331

Dai, Sheng ^[1]; Peng, Sheng ^[2]; Lee, Youngmin ^[2]; Wang, Chao ^[2]; Yin, Hongfeng ^[1]; Sun, Shouheng ^[1]

---

1. ORNL
2. Brown University

Monodisperse Au nanoparticles (NPs) have been synthesized at room temperature via a burst nucleation of Au upon injection of the reducing agent t-butylamine-borane complex into a 1, 2, 3, 4-tetrahydronaphthalene solution of HAuCl{sub 4} {center_dot} 3H{sub 2}O in the presence of oleylamine. The as-synthesized Au NPs show size-dependent surface plasmonic properties between 520 and 530 nm. They adopt an icosahedral shape and are polycrystalline with multiple-twinned structures. When deposited on a graphitized porous carbon support, the NPs are highly active for CO oxidation, showing 100% CO conversion at -45 C.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1043331
• Journal Information: Nano Reserch, Vol. 1, Issue 3
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON
CATALYSIS
NUCLEATION
OXIDATION
REDUCING AGENTS
SHAPE
SYNTHESIS