Hostname: page-component-76fb5796d-qxdb6 Total loading time: 0 Render date: 2024-04-26T13:03:32.360Z Has data issue: false hasContentIssue false
  • English
  • Français

Surface Structures of Shape-Controlled Platinum Nanoparticles

Published online by Cambridge University Press:  02 July 2020

Z.L. Wang ,
T.S. Ahmadi ,
J.M. Petroski  and
M.A. El-Sayed
Z.L. Wang
Affiliation:
School of Material Science and Engineering, Atlanta, GA30332-0245
T.S. Ahmadi
Affiliation:
School of Chemistry and Biochemistry Georgia Institute of Technology, Atlanta, GA30332-0245
J.M. Petroski
Affiliation:
School of Chemistry and Biochemistry Georgia Institute of Technology, Atlanta, GA30332-0245
M.A. El-Sayed
Affiliation:
School of Chemistry and Biochemistry Georgia Institute of Technology, Atlanta, GA30332-0245
Get access

Extract

The selectivity and activities of platinum (Pt) particles strongly depend on their sizes and shapes. A technique has been recently reported for controlling the shapes and sizes of Pt particles [1]. Pt particles were prepared by bubbling Ar gas through the solution of K2PtCl4, and the Pt ions were reduced by flowing H2 gas through the solution. The shape control was performed by changing the ratio of the concentration of the capping polymer material to that of the platinum cations used in the reductive synthesis of colloidal particles in solution at room temperature [2]. High percentage of cubic, tetrahedral and octahedral particles have been prepared at room temperature, making it possible for studying the chemical activities of particles with different shapes and facets. This paper aims to study the surface structures of Pt particles prepared by the shape-controlling synthesis technique using high-resolution transmission electron microscopy (HRTEM).

Type
Nanocrystals and Nanocomposites: Novel Structures for Catalysis, Electronics, and Micromechanics
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 429 - 430
Copyright
Copyright © Microscopy Society of America 1997

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.)

References

Ahmadi, T.S., Wang, Z.L., Green, T.C., Henglein, A. and El-Sayed, M.A., Science 272 (1996) 1924.10.1126/science.272.5270.1924CrossRefGoogle Scholar
Ahmadi, T.S., Wang, Z.L., Henglein, A. and El-Sayed, M.A., Chemistry of Materials, 8 (1996) 1161.10.1021/cm9601190CrossRefGoogle Scholar
Shi, A.C. and Masel, R.I., J. Catalysis 120 (1989) 421.10.1016/0021-9517(89)90282-0CrossRefGoogle Scholar
This work was supported in part by the office of Naval Research (Grant N00014-95-1-0306).Google Scholar