Synthesis of Porous -Fe2O3 Nanorods and Deposition of Very Small Gold Particles in the Pores for Catalytic Oxidation of CO

详细信息    查看全文

• 作者：Ziyi Zhong ; Judith Ho ; Jaclyn Teo ; Shoucang Shen ; Aharon Gedanken
• 刊名：Chemistry of Materials
• 出版年：2007
• 出版时间：September 18, 2007
• 年：2007
• 卷：19
• 期：19
• 页码：4776 - 4782
• 全文大小：677K
• 年卷期：v.19,no.19(September 18, 2007)
• ISSN：1520-5002

文摘

FeO(OH) nanorods were prepared by a mild hydrothermal synthesis using tetraethylammoniumhydroxide (TEAOH) as the structure director. The as-prepared FeO(OH) was converted to porous -Fe₂O₃nanorods via calcination at 300 C. The -Fe₂O₃ nanorods have a pore size distribution in the range of1-5 nm, which is ideal to house very small gold (Au) particles. Later, by employing our inventedAu- colloid-method, in which lysine was used as the capping reagent and sonication was employed tofacilitate the deposition of the Au particles, we inserted very small Au particles into these pores. Theprepared Au/-Fe₂O₃-nanorod catalyst exhibited higher catalytic activity than the Au/-Fe₂O₃ (Fluka)catalyst.