A Facile Approach to Well-Dispersible CeO2 Nanoparticles |
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| Authors: | Jiaoxing Xu Liping Li |
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| Affiliation: | State Key Structural Chemistry Laboratory , Fujian Institute of Research on the Structure of Matter, Graduate School of Chinese Academy of Science , Fujian, P. R. China |
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| Abstract: | 18 nm CeO2 with surface being functionalized by nitrate groups were prepared to yield a stable suspension in acidic aqueous solution. Different from the bare ones, these suspensions precipitated rapidly when the solution became basic. Further tuning the solution back to acidic led to a stable suspension again. This phenomenon was explained in terms of the electrostatic repulsion of electrical double layers of intensive surface bound nitrate groups and acidic medium. |
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| Keywords: | CeO2 colloidal suspension dispersibility surface functionalization |
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