Size control and growth process of alkylamine-stabilized platinum nanocrystals: a comparison between the phase transfer and reverse micelles methods

Langmuir : the ACS Journal of Surfaces and Colloids
Kjell WikanderMarie-Paule Pileni

Abstract

Alkylamine-stabilized platinum nanoparticles are synthesized either by the phase-transfer method or in reverse micelles. The phase-transfer method produces nanocrystals that are quite spherical whereas the synthesis in reverse micelles generates a large number of wormlike structures. An alkylamine is used as a stabilizing agent to prevent nanoparticle coalescence, and it is shown that there is an inverse relationship between the alkylamine chain length and the platinum nanoparticle diameter. By comparing alkylamine and alkylthiol analogues, it is found that the integrity of the different crystallites depends on the strength of the interaction between the stabilizing agent and the platinum nanocrystals. The results obtained and the comparison made between the two synthesis methods improve the understanding of the growth mechanisms of platinum nanocrystals in disperse media.

References

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Citations

Feb 7, 2012·Physical Chemistry Chemical Physics : PCCP·Jason R StephensMary Elizabeth Williams
Jun 28, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Lin HanJun Yang
Dec 3, 2014·Journal of Environmental Sciences (China)·Yan WangMaohong Fan
Feb 23, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Caroline Salzemann, Christophe Petit
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Jul 16, 2013·Chemical Communications : Chem Comm·Peng ZhangSeong Ho Kang
Jan 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Yaqun HuangShik Chi Tsang
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Jul 3, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·A Demortière, C Petit
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Dec 29, 2007·Journal of the American Chemical Society·Xiaowei TengJose A Rodriguez

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