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Issue 23, 2013
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Environmentally-friendly biomimicking synthesis of TiO2 nanomaterials using saccharides to tailor morphology, crystal phase and photocatalytic activity

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Abstract

Owing to its broad applications and fundamental importance, a synthesis method with the capability to tailor TiO2 with different crystal phases and morphologies has attracted significant research attention. In this work, an environmentally-friendly biomimetic synthesis was developed to fabricate TiO2 nanomaterials. It is interesting to discover that saccharides as biotemplates to synthesize TiO2 cannot only direct the formation of the desired architectural nanocrystals but also significantly affect the crystal phase. The results further indicate that rutile TiO2 is obtained by using β-cyclodextrin and chitosan, while anatase TiO2 is formed by using soluble starch. The nanomaterials obtained by using different saccharides show higher photocatalytic activity than those without using the biotemplate. The possible mechanisms for the nanostructures growth and their photocatalytic activity are proposed. This work demonstrates an advanced synthetic method to structurally refine nanotitania with a higher degree of functionality while possessing an environmentally-friendly nature.

Graphical abstract: Environmentally-friendly biomimicking synthesis of TiO2 nanomaterials using saccharides to tailor morphology, crystal phase and photocatalytic activity

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Article information


Submitted
19 Feb 2013
Accepted
07 Apr 2013
First published
07 May 2013

CrystEngComm, 2013,15, 4694-4699
Article type
Paper

Environmentally-friendly biomimicking synthesis of TiO2 nanomaterials using saccharides to tailor morphology, crystal phase and photocatalytic activity

S. Bao, C. Lei, M. Xu, C. Cai, C. Cheng and C. M. Li, CrystEngComm, 2013, 15, 4694
DOI: 10.1039/C3CE40310F

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