Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-03T02:08:56.903Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron Microscopy Study of Novel Pt Nanowires Synthesized in the Spaces of Silica Mesoporous Materials

Published online by Cambridge University Press:  28 March 2002

Osamu Terasaki ,
Zheng Liu ,
Tetsu Ohsuna ,
Hyun June Shin  and
Ryong Ryoo
Osamu Terasaki
Affiliation:
Department of Physics & CIR, Tohoku University, Sendai 980-8578, Japan CREST, JST, Tohoku University, Sendai 980-8578, Japan
Zheng Liu
Affiliation:
CREST, JST, Tohoku University, Sendai 980-8578, Japan
Tetsu Ohsuna
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Hyun June Shin
Affiliation:
Department of Chemistry (School of Molecular Science-BK21), KAIST, Taejon 305-701, Korea
Ryong Ryoo
Affiliation:
Department of Chemistry (School of Molecular Science-BK21), KAIST, Taejon 305-701, Korea
Get access

Abstract

Structures of Pt-nanowires, synthesized in channels of silica mesoporous materials MCM-41, SBA-15 and MCM-48, were investigated by transmission electron microscopy. One dimensional (1D) Pt-nanowires were formed inside the channels of the MCM-41, and were single crystals with a length of several tens to several hundreds nanometers and a diameter of ca. 3 nm Pt-nanowires synthesized in SBA-15 formed a new 3D-network following 3D-pore geometry of SBA-15; that is, the main 1D-channels are interconnected to each other through randomly distributed tunnels. These Pt-nanowires showed a well single crystalline. MCM-48 has two non-intersecting chiral channels, and Pt-networks were mostly formed in one of the two channels. Therefore the networks were also chiral; however, the chirality of Pt-networks remained to be determined. It was shown that all Pt-nanowires were formed following the channel geometries of silica mesoporous materials used.

Keywords

Pt nanowiresmesoporous materialsHREM1D-nanowires3D-nanowiresMCM-41MCM-48SBA-15
Type
Research Article
Information
Microscopy and Microanalysis , Volume 8 , Issue 1 , February 2002 , pp. 35 - 39
Copyright
© 2002 Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)