Probing nucleation pathways for morphological manipulation of platinum nanocrystals

Journal of the American Chemical Society
Tao YaoShiqiang Wei

Abstract

Understanding the formation process in the controlled synthesis of nanocrystals will lead to the effective manipulation of the morphologies and properties of nanomaterials. Here, in-situ UV-vis and X-ray absorption spectroscopies are combined to monitor the tracks of the nucleation pathways in the solution synthesis of platinum nanocrystals. We find experimentally that the control over nucleation pathways through changing the strength of reductants can be efficiently used to manipulate the resultant nanocrystal shapes. The in-situ measurements show that two different nucleation events involving the formation of one-dimensional "Pt(n)Cl(x)" complexes from the polymerization of linear "Cl(3)Pt-PtCl(3)" dimers and spherical "Pt(n)(0)" clusters from the aggregation of Pt(0) atoms occur for the cases of weak and strong reductants; and the resultant morphologies are nanowires and nanospheres, respectively. This study provides a crucial insight into the correlation between the particle shapes and nucleation pathways of nanomaterials.

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Citations

Aug 3, 2016·Journal of Chemical Theory and Computation·Guang-Feng Wei, Zhi-Pan Liu
Nov 27, 2014·Scientific Reports·Hiroyuki OyanagiHideaki Maeda
Apr 30, 2017·Journal of Synchrotron Radiation·Shengqi ChuJing Zhang
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Oct 15, 2013·Nanoscale·Hao ChengShiqiang Wei
Nov 10, 2020·Advances in Colloid and Interface Science·Jonathan Quinson, Kirsten M Ø Jensen
Mar 26, 2021·The Journal of Physical Chemistry Letters·Jette K MathiesenKirsten M Ø Jensen
Jun 23, 2021·The Journal of Physical Chemistry Letters·Biao JinRuikang Tang
Oct 31, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Hany A El-SayedHubert A Gasteiger
Sep 25, 2019·Chemical Reviews·Kimihisa YamamotoTetsuya Kambe
Sep 24, 2019·Journal of the American Chemical Society·Michal StrachRaffaella Buonsanti

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