Multi-amine-assisted crystal growth of large-sized α-MoO3 elongated nano-plates

Sang Hwa Moon, Sang Hyuk Im

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Large-sized α-MoO3 elongated nano-plates were synthesized by the introduction of multi-amines such as ethylene di-amine and diethylene tri-amine (DETA) in the conventional hydrothermal reaction. DETA made large hexagonal rods with an h-MoO3 intermediate phase containing H2O, NH4OH, and DETA ions. During the hydrothermal reaction, the hexagonal rods were transformed to elongated α-MoO3 nano-plates by the re-dissolution of h-MoO3 and re-growth to α-MoO3 because DETA retarded the preferred growth reaction of the MoO6 octahedra to the [001] direction and helped the MoO6 octahedra to grow in the [100] direction. In addition, DETA promoted α-MoO3 nano-belts to be assembled into elongated nano-plates by oriented attachment because the multi-ammonium groups in the DETA backbone could adhere to the α-MoO3 nano-belts due to attractive Coulomb interactions.

Original languageEnglish
Pages (from-to)18037-18045
Number of pages9
JournalNanoscale
Volume11
Issue number39
DOIs
Publication statusPublished - 2019 Oct 21

ASJC Scopus subject areas

  • Materials Science(all)

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