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Synthesis of Hollow Titania Photocatalytic Particles Using Yeast as Templates

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Abstract:

Hollow inorganic particles have attracted considerable interest for a variety of applications. In this work, yeast powder was used as a bio-template to fabricate yeast/titania core-shell spheres. A titania precursor was deposited via the hydrolysis of tetraisopropyl titanate. Triethanolamine was employed to control the reaction rate of the sol-gel process. The hollow titania particles with a diameter of approximately 4 m and a thickness of approximately 54 nm were successfully obtained after calcination of the core-shell spheres at 700 °C. The crystal structure of the particles was anatase. The specific surface area and the average pore diameter were 21.4 m2/g and 1.6 nm, respectively. The photocatalytic activity of the hollow particles was higher compared with that of solid particles.

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Periodical:

Advanced Materials Research (Volume 699)

Pages:

126-132

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.699.126

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Online since:

May 2013

Authors:

Toshiyuki Nomura, Syota Tanii, Hayato Tokumoto, Yasuhiro Konishi

Keywords:

Bio-Template, Hollow Particle, Photocatalyst, Titania, Yeast

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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