Transmission Electron Microscopy Study of Eu-Doped Y2O3 Nanosheets and Nanotubes

Journal Article · Sat Dec 31 04:00:00 EST 2011 · Nanoscience and Nanotechnology Letters

DOI:https://doi.org/10.1166/nnl.2011.1187· OSTI ID:1041638

Sun, H; Chaudhuri, T; Kenik, E; Zhu, H; Ma, Y

A hydrothermal method was used to synthesize high-purity Eu-doped Y{sub 2}O{sub 3} nanosheets and nanotubes with an approximate molar ratio of (0.1):(1.0) for Eu:Y. High-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy analysis and synchrotron X-ray diffraction were used to characterize these nanomaterials. A body-centered cubic structure was confirmed for the nanotubes. The lattice parameter of Eu-doped Y{sub 2}O{sub 3} nanotubes were 0.12% larger as compared to that of pure Y{sub 2}O{sub 3} which was attributed to the larger ionic radius of Eu{sup 3+} (0.947 {angstrom}) than that of Y{sup 3+} (0.900 {angstrom}). The nanosheets had a similar structure. Nanosheets of approximate dimensions 600 to 800 nm length and width were obtained using a slightly lower pH value, and they were highly textured. The high resolution transmission electron microscopy images showed that the nanotubes are fully crystalline. The nanotubes were typically 1.5-3 {micro}m in length and 50-200 nm in diameter. Using a pH value of approximately 10, stable nanotubes were obtained. It is anticipated that nanosheets might have rolled to form more stable nanotubes.

• Research Organization: BROOKHAVEN NATIONAL LABORATORY (BNL)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 1041638
• Report Number(s): BNL--97316-2012-JA
• Journal Information: Nanoscience and Nanotechnology Letters, Journal Name: Nanoscience and Nanotechnology Letters Journal Issue: 3 Vol. 3; ISSN 1941-4900
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DIMENSIONS
LATTICE PARAMETERS
NANOTUBES
PH VALUE
RESOLUTION
SYNCHROTRONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY