2009 Fiscal Year Final Research Report

Interface characterization of Au/Perovskite nano-hettero catalysts

Research Project

Project/Area Number	20760440
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Physical properties of metals
Research Institution	Osaka University
Principal Investigator	ICHIKAWA Satoshi Osaka University, ナノサイエンスデザイン教育研究センター, 特任准教授 (80403137)
Project Period (FY)	2008 – 2009
Keywords	ナノ粒子触媒 / 電子顕微鏡 / 電子線ホログラフィー / 金触媒
Research Abstract	We made Au/SrTiO3 nano-hetero catalysts by the vacuum evaporation method (VE) in order to create new nano-hetero interfaces and characterized in nano-scale by high resolution electron microscopy (HREM) and electron holography. Au particles with the size over 2nm were deposited on SrTiO3 (001) and (011) planes with no orientation relationship in spite of the small mismatch of lattice constant. The mean inner potential of the Au nano particles on SrTiO3 also exhibit the size dependence. When the size of Au particle is smaller than 4nm, the mean inner potential of Au increased gradually as the size decreases. When the size is smaller than 3nm, the mean inner potential of the Au is over 35V.