Influence of pH on the Morphology of Yttrium Oxide Hydroxide Nitrate Nanocrystal

Zhang Lian Hong; Huang Guo; Li Xia Peng; Min Quan Wang

doi:10.4028/www.scientific.net/KEM.336-338.2176

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 336-338Influence of pH on the Morphology of Yttrium Oxide...

Influence of pH on the Morphology of Yttrium Oxide Hydroxide Nitrate Nanocrystal

Abstract:

Yttrium oxide hydroxide nitrate (Y4O(OH)9NO3), which was prepared by polyvinyl alcoholassisted hydrothermal method from the Y(NO3)3 and KOH starting solution, was characterized by XRD and FE-SEM. The results revealed that pH value of the starting solution is an important factor which determines the morphology and size of the products. The obtained products varied from lamina microprisms to circular nanorods when the pH value increased from 7.0 to 8.0. In the high pH value above 8.0, the size of nanorods decreased with increasing pH value. A primary mechanism was proposed to explain the evolution of morphology and size of Y4O(OH)9NO3 products prepared under various pH values.

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Key Engineering Materials (Volumes 336-338)

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2176-2178

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https://doi.org/10.4028/www.scientific.net/KEM.336-338.2176

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April 2007

Authors:

Zhang Lian Hong, Huang Guo, Li Xia Peng, Min Quan Wang

Keywords:

Hydrothermal Method, Nanocrystal, pH Value, Yttrium Oxide Hydroxide Nitrate

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