Effect of sodium nitrate on microwave-assisted synthesis of ceria nanocubes

Tamra J. Fisher, Meiyu Wang, Yousif Ibrahim, Benjamin Steffensmeier, Chin Li Cheung

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Fluorite-structured cerium oxide (ceria; CeO2-x, 0≤x<0.5) possesses unique catalytic activity to promote redox reactions. Among the most common facets of ceria, the {100} facets of ceria nanocubes have been found to be more catalytically active as well as better noble metal supports than the {111} facets of ceria nanopolyhedra. Here we report a facile microwave-assisted synthesis of ceria nanocubes using sodium nitrate as the surface modifying agent (SMA). Microwave methods directly scaled from conventional hydrothermal parameters were found to produce mixtures of ceria nanocubes and ceria nanorods. The effect of sodium nitrate on the shape-control growth of ceria nanocubes was investigated by using various mole ratios of sodium nitrate to the cerium nitrate precursor in the synthetic study. From our morphological analysis of resulting ceria products, the mechanistic roles of the SMA were postulated to destabilize the growth of {110} and {111} facets of ceria nanocrystals as well as influencing the incorporation rate of precursors on the surfaces of ceria crystals.

Original languageEnglish (US)
Pages (from-to)71-74
Number of pages4
JournalMaterials Letters
Volume178
DOIs
StatePublished - Sep 1 2016

Fingerprint

sodium nitrates
Cerium compounds
flat surfaces
Nitrates
Microwaves
Sodium
microwaves
synthesis
shape control
cerium oxides
fluorite
cerium
noble metals
nanorods
catalytic activity
nitrates
nanocrystals
Cerium
sodium nitrate
products

Keywords

  • Ceria
  • Microwave
  • Nanocubes
  • Nanorods
  • Sodium nitrate

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Effect of sodium nitrate on microwave-assisted synthesis of ceria nanocubes. / Fisher, Tamra J.; Wang, Meiyu; Ibrahim, Yousif; Steffensmeier, Benjamin; Cheung, Chin Li.

In: Materials Letters, Vol. 178, 01.09.2016, p. 71-74.

Research output: Contribution to journalArticle

Fisher, Tamra J. ; Wang, Meiyu ; Ibrahim, Yousif ; Steffensmeier, Benjamin ; Cheung, Chin Li. / Effect of sodium nitrate on microwave-assisted synthesis of ceria nanocubes. In: Materials Letters. 2016 ; Vol. 178. pp. 71-74.
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