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Issue 3, 2015
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A general approach towards multi-faceted hollow oxide composites using zeolitic imidazolate frameworks

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Abstract

To realize the various functionalities and maximize the structural advantages, hollow particles with multiple compositions and complex structures are highly desirable. However, the development of a convenient and scalable method for the synthesis of such multi-compositionally complex hollow structures remains a big challenge. Herein, we report an efficient and universal strategy to fabricate a variety of porous hollow oxide nanocomposites (Co3O4/SiO2, Co3O4/TiO2, ZnO/SiO2, and ZnO/TiO2) composed of nanosized subunits, which involves a sol–gel process to form a shell onto the dodecahedral zeolitic imidazolate framework (ZIF) template and a subsequent thermolysis-induced transformation of the template at appropriate temperatures. Such a multi-compositional hollow structure with a large surface area endows the materials with exceptional properties and performances. As an example, we demonstrated that these complex hollow oxide composites, especially the Co3O4/SiO2 hollow dodecahedra, exhibit a significantly enhanced photocatalytic performance as oxygen evolution photocatalysts.

Graphical abstract: A general approach towards multi-faceted hollow oxide composites using zeolitic imidazolate frameworks

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Publication details

The article was received on 04 Sep 2014, accepted on 04 Nov 2014 and first published on 10 Nov 2014


Article type: Paper
DOI: 10.1039/C4NR05135A
Nanoscale, 2015,7, 965-974

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    A general approach towards multi-faceted hollow oxide composites using zeolitic imidazolate frameworks

    R. Wu, D. P. Wang, J. Han, H. Liu, K. Zhou, Y. Huang, R. Xu, J. Wei, X. Chen and Z. Chen, Nanoscale, 2015, 7, 965
    DOI: 10.1039/C4NR05135A

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