Hostname: page-component-76fb5796d-x4r87 Total loading time: 0 Render date: 2024-04-26T12:55:50.574Z Has data issue: false hasContentIssue false
  • English
  • Français

Chemical Compostion Analysis on Sintered Gold and Platinum Nanoparticles

Published online by Cambridge University Press:  02 July 2020

S. Lu ,
N. Yao  and
I. A. Aksay
S. Lu
Affiliation:
Princeton Materials Institute, Princeton, NJ08540 Department of Chemical Engineering Princeton University, Princeton, NJ08540
N. Yao
Affiliation:
Princeton Materials Institute, Princeton, NJ08540
I. A. Aksay
Affiliation:
Princeton Materials Institute, Princeton, NJ08540 Department of Chemical Engineering Princeton University, Princeton, NJ08540
Get access

Extract

Nanoparticles continue to attract interests because they fall into intermediate stage between molecular and macroscopic materials. Due to their large surface-to-volume ratio, nanoparticles exhibit physical and chemical properties that differ markedly from those characterizing the bulk solid state. One example is the phase diagram of a nanomaterial. Because nanocrystals display clear changes in both the thermodynamics and the kinetics of phase transitions, we expect different solubility limits in the nanometer regime. This means that phases unstable or unobserved in extended solids may be prepared as nanocrystals. We synthesized Au and Pt nanoparticles and performed chemical analysis on the sintered agglomerates.

The colloidal Au and Pt particles were synthesized according to Turkevich's method. An aqueous AuCl3 solution (50mg Au/L) was heated to 70°C. A determined amount of lwt% aqueous sodium citrate dihydrate (Na3C6H5O7.2H2O) solution was added such that the citrate-to-Au mass ratio was 10.

Type
Sir John Meurig Thomas Symposium: Microscopy and Microanalysis in the Chemical Sciences
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 28 - 29
Copyright
Copyright © 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.)

References

1.Alivisatos, A.P., Endeavor 21(1997) 56.CrossRefGoogle Scholar
2.Allan, G., Electronic Design 47 (1999) 29.Google Scholar
3.Scheer, E., et al, Nature 394 (1998) 154.CrossRefGoogle Scholar
4.Turkevich, J., Gold Bulletin 18 (3) (1985) 86, 18 (4) (1985) 125.CrossRefGoogle Scholar
5.Turkevich, J., Miner, R. S., Babenkava, L., Journal of Physical Chemistry 90 (1986) 4765.CrossRefGoogle Scholar
6.Yao, N., Shih, W. Y., Dabbs, D. M., Aksay, I. A., Proc. Microscopy and Microanalysis (1995) 196.CrossRefGoogle Scholar
7.Massalski, T.B., in Binary Alloy Phase Diagrams, Ohio ASM International (1990) 414.Google Scholar
8.Lide, D.R., in CRC Handbook of Chemistry and Physics, 79th ed. New York CRC Press (1998) 9–51 and 9-55.Google Scholar
9. This research was partially supported by the Materials Research and Engineering Center program of the National Science Foundation (Grant No. DMR-94-00362). The insight provided by former Prof. J. Turkevich of Princeton University is gratefully acknowledged.Google Scholar