Analytical TEM study on structural changes of Au particles on cerium oxide using a heating holder

作者：Akita Tomoki^*; Tanaka Koji; Kohyama Masanori; Haruta Masatake

来源：Catalysis Today, 2007, 122(3-4): 233-238.

DOI：10.1016/j.cattod.2007.01.014

• Au
• CeO2
• TEM
• diffusion

The structure changes of Au nano-particles supported on CeO2 were observed by using an analytical transmission electron microscope (TEM) with a specimen heating holder. The disintegration and growth of Au particles on CeO2 were successfully observed in the atomic scale. In situ observation of Au particles at elevated temperature reveals that the Au particles on CeO2 grow by Ostwald ripening process through surface diffusion. Iridium particles on CeO2 were also observed during the heating process for comparison.

• 出版日期2007-4-30