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Title: Metastable Tetragonal CdWO 4 Nanoparticles Synthesized with a Solvothermal Method

Abstract

CdWO{sub 4} has only previously been reported in the monoclinic, or wolframite, phase. Here we report the first metastable, tetragonal or scheelite, CdWO4 nanopowder. The tetragonal CdWO{sub 4} was synthesized by a propylene glycol solvothermal method. The scheelite phase is stabilized by a combination of high surface area and surface complexation by the propylene glycol. The CdWO{sub 4} is stable at 1 bar to 300 C, and converts back to the monoclinic wolframite phase between 300 and 500 C. The nanopowder exhibits cubic morphology and the average particle size of the nanopowder is around 50 nm.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931618
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Colloid and Interface Science; Journal Volume: 306; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CADMIUM OXIDES; TUNGSTEN OXIDES; NANOSTRUCTURES; TETRAGONAL LATTICES; SYNTHESIS; SURFACE AREA; PHASE TRANSFORMATIONS

Citation Formats

Rondinone, Adam Justin, Travaglini, Dustin H, Pawel, Michelle D, Mahurin, Shannon Mark, and Dai, Sheng. Metastable Tetragonal CdWO4 Nanoparticles Synthesized with a Solvothermal Method. United States: N. p., 2007. Web. doi:10.1016/j.jcis.2006.10.064.
Rondinone, Adam Justin, Travaglini, Dustin H, Pawel, Michelle D, Mahurin, Shannon Mark, & Dai, Sheng. Metastable Tetragonal CdWO4 Nanoparticles Synthesized with a Solvothermal Method. United States. doi:10.1016/j.jcis.2006.10.064.
Rondinone, Adam Justin, Travaglini, Dustin H, Pawel, Michelle D, Mahurin, Shannon Mark, and Dai, Sheng. Mon . "Metastable Tetragonal CdWO4 Nanoparticles Synthesized with a Solvothermal Method". United States. doi:10.1016/j.jcis.2006.10.064.
@article{osti_931618,
title = {Metastable Tetragonal CdWO4 Nanoparticles Synthesized with a Solvothermal Method},
author = {Rondinone, Adam Justin and Travaglini, Dustin H and Pawel, Michelle D and Mahurin, Shannon Mark and Dai, Sheng},
abstractNote = {CdWO{sub 4} has only previously been reported in the monoclinic, or wolframite, phase. Here we report the first metastable, tetragonal or scheelite, CdWO4 nanopowder. The tetragonal CdWO{sub 4} was synthesized by a propylene glycol solvothermal method. The scheelite phase is stabilized by a combination of high surface area and surface complexation by the propylene glycol. The CdWO{sub 4} is stable at 1 bar to 300 C, and converts back to the monoclinic wolframite phase between 300 and 500 C. The nanopowder exhibits cubic morphology and the average particle size of the nanopowder is around 50 nm.},
doi = {10.1016/j.jcis.2006.10.064},
journal = {Journal of Colloid and Interface Science},
number = 2,
volume = 306,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}