Journal
MATERIALS LETTERS
Volume 215, Issue -, Pages 203-206Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.12.107
Keywords
Iron oxide; Polyol synthesis; Polyvinylpyrrolidone; Particle size; Dynamic light scattering
Funding
- National Science Foundation [1334160]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1334160] Funding Source: National Science Foundation
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The effects of polyvinylpyrrolidone (PVP) on the formation of iron oxide nanoparticles during polyol synthesis are described. The addition of PVP during synthesis changes the particle morphology from compact to porous with chains of small iron oxide nanocrystals at the surface of the particles due to the steric repulsion of PVP ligands. The addition of PVP also reduces average particle size from 857 nm to 225 nm by preventing agglomeration. In addition, the presence of PVP restricts crystal growth of iron oxide and limits oxidation. The high-surface areas achieved for the powders can be useful for catalytic applications. (C) 2017 Elsevier B.V. All rights reserved.
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