Synthesis of barium-strontium titanate hollow tubes using Kirkendall effect

Xuncai Chen, Sang Hyuk Im, Jinsoo Kim, Woo Sik Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

(BaSr)TiO3 hexagonal hollow tubes was fabricated by a solid-state interfacial reaction including a Kirkendall diffusion. Using a co-precipitation and sol-gel process, a core@shell structure of (BaSr)CO3@TiO2 rods were prepared, and then converted to (BaSr)TiO3 hollow tubes at 750 °C. This was a first achievement of single-phase crystal hollow tube. Here, the inner diameter and wall thickness of hollow tube were about 700 nm and 130 nm, respectively. The fabrication of (BaSr)TiO3 hollow tubes was monitored with scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), and X-ray diffraction (XRD) to investigate their formation mechanism. The present synthetic approach would provide a new insight into the design and fabrication of hollow architectures of many perovskite oxides.

Original languageEnglish
Pages (from-to)102-109
Number of pages8
JournalJournal of Crystal Growth
Volume483
DOIs
Publication statusPublished - 2018 Feb 1
Externally publishedYes

Keywords

  • A1. Diffusion
  • B1. Barium compound
  • B1. Nanomaterials
  • B1. Perovskites
  • B1. Titanium compound

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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