Electron holographic 3-D nano-analysis of Au/TiO2 catalyst at interface.
Electron holographic 3-D nano-analysis of Au/TiO2 catalyst at interface.
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Au/TiO2 催化剂界面的电子全息 3D 纳米分析。
DOI:
10.1093/jmicro/52.1.21
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
M. Kohyama
中科院分区:
文献类型:
--
作者:
S. Ichikawa;T. Akita;M. Okumura;M. Haruta;Koji Tanaka;M. Kohyama
Three-dimensional (3-D) nanostructures of gold catalysts supported on TiO2 were analysed by electron holography and high-resolution electron microscopy. The contact angle of the gold particle on TiO2 tended to be >90 degrees in the case of gold particles with a size (height) of >4 nm and it tended to be <90 degrees for gold particles with a height of <2 nm. The change in morphology increases the perimeter at the Au/TiO2 interface as the particle size decreases. This change in 3-D structure should be attributed to a change in electronic structure at the interface. It was found that electron holography enabled 3-D analysis at the atomic level and was effective for analysing nanostructured particles.