Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 9, Pages 3461-3466Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp809429b
Keywords
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Funding
- National Basic Research Program of China [2006CB806104, 2007CB925102]
- Natural Science Grant of China [20721002, 50572037]
- U.S. National Science Foundation [CHE-0516928]
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A simple sonochemical procedure was developed to synthesize the flowerlike yttria precursor Y-2(OH)(5)-NO3 center dot 1.5H(2)O. Y2O3 with the same morphology was readily obtained by calcination of the precursor. The microstructures and morphologies of the products were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectra (XPS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and field-emission scanning electron microscopy (FESEM). The as-obtained Y2O3 and its precursor were found to be effective sorbents for the removal of Cr(VI) ions in water treatment, as a result of the novel hierarchical structures and high specific surface areas of these two materials.
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