Facile fabrication of hollow silica and titania microspheres using plasma-treated polystyrene spheres as sacrificial templates |
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Authors: | Li Haiqing Ha Chang-Sik Kim Il |
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Affiliation: | Department of Polymer Science ad Engineering, Pusan National University, Pusan, Korea. |
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Abstract: | By means of a plasma technique, the surfaces of monodisperse polystyrene (PS) colloids have been modified with hydroxyl groups. Using these surface-modified PS colloids as sacrificial templates, we have fabricated silica-coated PS colloids (PS@silica) and titania-coated PS colloids (PS@titania) composite microspheres as well as hollow and mesoporous silica and titania microspheres. This process not only demonstrated a facile, low-cost, environmentally benign way to fabricate hollow oxides structures but also offered a feasible alternative to the preparation of polymer/inorganic oxide composites by templating against the polymer substrate with hydrophobic surfaces. |
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