Shape control of size-selected naked platinum nanocrystals

Xia，Yu1,2; Nelli，Diana3; Ferrando，Riccardo3; Yuan，Jun4; Li，Z. Y.1

2021-12-01

10.1038/s41467-021-23305-7

Nature Communications   影响因子和分区

2041-1723

Controlled growth of far-from-equilibrium-shaped nanoparticles with size selection is essential for the exploration of their unique physical and chemical properties. Shape control by wet-chemistry preparation methods produces surfactant-covered surfaces with limited understanding due to the complexity of the processes involved. Here, we report the controlled production and transformation of octahedra to tetrahedra of size-selected platinum nanocrystals with clean surfaces in an inert gas environment. Molecular dynamics simulations of the growth reveal the key symmetry-breaking atomic mechanism for this autocatalytic shape transformation, confirming the experimental conditions required. In-situ heating experiments demonstrate the relative stability of both octahedral and tetrahedral Pt nanocrystals at least up to 700 °C and that the extended surface diffusion at higher temperature transforms the nanocrystals into equilibrium shape.

SCI

英语

NI论文

其他

WOS:000658766200001

2-s2.0-85106611904

Scopus

1.School of Physics and Astronomy,University of Birmingham,Edgbaston,Birmingham,United Kingdom
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,China
3.Dipartimento di Fisica and CNR/IMEM,Università degli Studi di Genova,Genova,Italy
4.Department of Physics,University of York,Heslington,York,United Kingdom

Xia，Yu,Nelli，Diana,Ferrando，Riccardo,et al. Shape control of size-selected naked platinum nanocrystals[J]. Nature Communications,2021,12(1).

Xia，Yu,Nelli，Diana,Ferrando，Riccardo,Yuan，Jun,&Li，Z. Y..(2021).Shape control of size-selected naked platinum nanocrystals.Nature Communications,12(1).

Xia，Yu,et al."Shape control of size-selected naked platinum nanocrystals".Nature Communications 12.1(2021).