Title

In Situ Transmission Electron Microscopy Of Solid-Liquid Phase Transition Of Silica Encapsulated Bismuth Nanoparticles

Abstract

The solid-liquid phase transition of silica encapsulated bismuth nanoparticles was studied by in situ transmission electron microscopy (TEM). The nanoparticles were prepared by a two-step chemical synthesis process involving thermal decomposition of organometallic precursors for nucleating bismuth and a sol-gel process for growing silica. The microstructural and chemical analyses of the nanoparticles were performed using high-resolution TEM, Z-contrast imaging, focused ion beam milling, and X-ray energy dispersive spectroscopy. Solid-liquid-solid phase transitions of the nanoparticles were directly recorded by electron diffractions and TEM images. The silica encapsulation of the nanoparticles prevented agglomeration and allowed particles to preserve their original volume upon melting, which is desirable for applications of phase change nanoparticles with consistently repeatable thermal properties. © The Royal Society of Chemistry 2011.

Publication Date

9-1-2011

Publication Title

Nanoscale

Volume

3

Issue

9

Number of Pages

3700-3704

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c1nr10394f

Socpus ID

80052579169 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052579169

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