High-Pressure Phase Transitions of Morphologically Distinct Zn2SnO4 Nanostructures

Partha Pratim Das, P. Sujatha Devi, Douglas A. Blom, Thomas Vogt, Yongjae Lee

Research output: Contribution to journalArticle

Abstract

Many aspects of nanostructured materials at high pressures are still unexplored. We present here, high-pressure structural behavior of two Zn2SnO4 nanomaterials with inverse spinel type, one a particle with size of ∼7 nm [zero dimensional (0-D)] and the other with a chain-like [one dimensional (1-D)] morphology. We performed in situ micro-Raman and synchrotron X-ray diffraction measurements and observed that the cation disordering of the 0-D nanoparticle is preserved up to ∼40 GPa, suppressing the reported martensitic phase transformation. On the other hand, an irreversible phase transition is observed from the 1-D nanomaterial into a new and dense high-pressure orthorhombic CaFe2O4-type structure at ∼40 GPa. The pressure-treated 0-D and 1-D nanomaterials have distinct diffuse reflectance and emission properties. In particular, a heterojunction between the inverse spinel and quenchable orthorhombic phases allows the use of 1-D Zn2SnO4 nanomaterials as efficient photocatalysts as shown by the degradation of the textile pollutant methylene blue.

Original languageEnglish
Pages (from-to)10539-10547
Number of pages9
JournalACS Omega
Volume4
Issue number6
DOIs
Publication statusPublished - 2019 Jun 18

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Nanostructured materials
Nanostructures
Phase transitions
Methylene Blue
Photocatalysts
Synchrotrons
Heterojunctions
Cations
Textiles
Positive ions
Nanoparticles
X ray diffraction
Degradation
spinell

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Das, Partha Pratim ; Devi, P. Sujatha ; Blom, Douglas A. ; Vogt, Thomas ; Lee, Yongjae. / High-Pressure Phase Transitions of Morphologically Distinct Zn2SnO4 Nanostructures. In: ACS Omega. 2019 ; Vol. 4, No. 6. pp. 10539-10547.
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High-Pressure Phase Transitions of Morphologically Distinct Zn2SnO4 Nanostructures. / Das, Partha Pratim; Devi, P. Sujatha; Blom, Douglas A.; Vogt, Thomas; Lee, Yongjae.

In: ACS Omega, Vol. 4, No. 6, 18.06.2019, p. 10539-10547.

Research output: Contribution to journalArticle

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