Additive-free synthesis of cerium oxide nanorods with reaction temperature-tunable aspect ratios

Zane C. Gernhart, Chris M. Marin, John J. Burke, Kate O. Sonnenfeld, Chin Li "Barry" Cheung

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The ability to control the morphology of fluorite-structured cerium oxide nanomaterials is an important step in the design of cerium oxide-based catalysts. Herein, we report an additive-free synthesis of cerium oxide nanorods with highly tunable aspect ratios from ~6:1 to 40:1. The use of a microwave hydrothermal method allows for both rapid synthesis and temperature control. The ability to control the length of the nanorods from <51 nm to >1.7 μm by varying only the reaction temperature was demonstrated over a temperature range of 80°C to 200°C. The formation of the resulting nanorods was investigated using selected-area electron-diffraction and high-resolution transmission electron microscopy. The surface area of nanorod products was found to decrease from 117 to 22 m2/g as the reaction temperature increased from 80°C to 200°C, complementing the general trend of the increasing aspect ratios of these products.

Original languageEnglish (US)
Pages (from-to)39-43
Number of pages5
JournalJournal of the American Ceramic Society
Volume98
Issue number1
DOIs
StatePublished - Jan 1 2015

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Cerium
Nanorods
Aspect ratio
Oxides
Temperature
Fluorspar
High resolution transmission electron microscopy
Nanostructured materials
Temperature control
Electron diffraction
Microwaves
Catalysts
ceric oxide

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

Additive-free synthesis of cerium oxide nanorods with reaction temperature-tunable aspect ratios. / Gernhart, Zane C.; Marin, Chris M.; Burke, John J.; Sonnenfeld, Kate O.; Cheung, Chin Li "Barry".

In: Journal of the American Ceramic Society, Vol. 98, No. 1, 01.01.2015, p. 39-43.

Research output: Contribution to journalArticle

Gernhart, Zane C. ; Marin, Chris M. ; Burke, John J. ; Sonnenfeld, Kate O. ; Cheung, Chin Li "Barry". / Additive-free synthesis of cerium oxide nanorods with reaction temperature-tunable aspect ratios. In: Journal of the American Ceramic Society. 2015 ; Vol. 98, No. 1. pp. 39-43.
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