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Hollow SiO2 Microspheres Produced by Coating Yeast Cells

Weinzierl, Daniel ; Lind, Anke ; Kunz, Werner


Hollow silica microspheres were produced by coating yeast cells with amorphous SiO2. In the pptn. reaction, yeast cells of Saccharomyces cerevisiae were used as a biol. template. The silica shell was synthesized by the hydrolysis of tetraethylorthosilicate (TEOS) in water-alc. mixts. as solvent using ammonia as a catalyst according to the Stoeber process. The hollow microspheres were ...


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