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Architecture of micron-scale hollow spheres composed of silica nanoparticles and approach to luminescent spheres

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Abstract

Micron-scale hollow spheres were successfully constructed with silica nanoparticles by templating of polymer spheres. Subsequently, the use of 3-aminopropyltriethoxysilane (APTES) introduces carbon and oxygen defects in the silica nanoparticles resulting from calcination of the aminopropyl group. In this approach, the template of micron-scale polymer spheres was prepared from dispersion polymerization. Subsequent Stöber process results in the formation of a silica layer attached to the polymer sphere surfaces. After calcination, the obtained micron-scale hollow silica spheres were then studied on the relationship between the particle diameter and the surface morphology. The luminescence of hollow spheres was prepared through using APTES in Stöber process, and which of related the appearance of luminescence to the APTES concentration and calcination temperature. The results of this study can provide useful information for the structure of micron-scale hollow spheres and their application to luminescent materials.

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Authors and Affiliations

  1. Department of Chemical and Materials Engineering, National Central University, 300 Jhongda Road, Jhongli, 32001, Taiwan

    Yi-Yu Liu, Shao-Liang Cheng & Hui Chen

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  1. Yi-Yu Liu
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  2. Shao-Liang Cheng
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  3. Hui Chen
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Correspondence to Hui Chen.

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Liu, YY., Cheng, SL. & Chen, H. Architecture of micron-scale hollow spheres composed of silica nanoparticles and approach to luminescent spheres. Colloid Polym Sci 290, 1777–1784 (2012). https://doi.org/10.1007/s00396-012-2716-9

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  • DOI: https://doi.org/10.1007/s00396-012-2716-9

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