NDLI: Synthesis of three-dimensional agaric-like biomorphic TiO$_{2}$ by a facile method with Coscinodiscus sp. frustule

Content Provider	Springer Nature Link
Author	Zhang, Qianqian Chen, Ran Li, Ling
Copyright Year	2012
Abstract	The paper aims to expand the application of natural marine algae. Marine diatoms, which have intricate frustule structures, can serve as bio-template for preparing three-dimensional materials. A simple and effective approach to synthesize the corrugated agaric-like biomorphic TiO$_{2}$ templated with frustule of Coscinodiscus sp. is reported. In the sol-gel preparation process, the titania-coating on the frustule is prepared through the deposition and condensation with the aid of acetylacetone (acac) as a controlling agent to make the precursor Ti(BuO)$_{4}$ hydrolyze slowly. The as-prepared titania-coated frustule and biomorphic TiO$_{2}$ is characterized by scanning electron microscopy (SEM) attached with energy dispersive X-ray spectrometer (EMAX) and X-ray diffraction (XRD). The microstructure of the corresponding titania nanoparticles appears to be sphere with the diameters distributed around 10–20 nm. The templating process is repeated for three cycles. Subsequently, the three-dimensional freestanding corrugated agaric-like biomorphic TiO$_{2}$ structure is obtained by a selective removal in the NaOH solution. As far as we known, the 3D freestanding corrugated agaric-like biomorphic TiO$_{2}$ with greatly increased surface area is obtained for the first time.
Starting Page	507
Ending Page	510
Page Count	4
File Format	PDF
ISSN	16725182
Journal	Journal of Ocean University of China
Volume Number	11
Issue Number	4
e-ISSN	19935021
Language	English
Publisher	SP Science Press
Publisher Date	2012-10-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	marine diatoms frustule Coscinodiscus sp. biomorphic TiO$_{2}$ microstructure Oceanography
Content Type	Text
Resource Type	Article
Subject	Oceanography Ocean Engineering

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