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Issue 9, 2001
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A new route to three-dimensionally well-ordered macroporous rare-earth oxides

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Ordered macroporous lanthanide oxides (Eu2O3, Nd2O3 and Sm2O3) have been fabricated using colloidal crystals of polystyrene (PS) spheres as a template in conjunction with the sol–gel method. Solidification of Ln3+–EDTA chelates in the voids between the PS spheres and removal of the template by calcination yields three-dimensional ordered macroporous oxides. X-Ray diffraction reveals that the phases of Eu2O3 , Nd2O3 and Sm2O3 are cubic, hexagonal and cubic, respectively, and scanning electron micrography shows that these oxides retain the structure of the initial template and exhibit 3D long-range ordered close packing of pores. The properties of these oxides are expected to allow them to find applications in areas including separation, catalysis and photonic crystals.

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Publication details

The article was received on 14 May 2001, accepted on 05 Jul 2001 and first published on 17 Aug 2001

Article type: Letter
DOI: 10.1039/B104215G
Citation: New J. Chem., 2001,25, 1118-1120
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    A new route to three-dimensionally well-ordered macroporous rare-earth oxides

    Y. Zhang, Z. Lei, J. Li and S. Lu, New J. Chem., 2001, 25, 1118
    DOI: 10.1039/B104215G

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