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Issue 27, 2009
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Chemical morphology freezing: chemical protection of the physical morphology of high photoactivity anatase TiO2nanotubes

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Abstract

In this paper, an unavoidable thermodynamic behavior of nanomaterials is prevented by using a simple chemical morphology freezing method. Titanate nanotubes (no photoactivity) are filled with LaMer-model carbon and then coated with a silica sheath. This chemical filling and coating process ‘isolates’ micro-thermal deformation from the system, and consequently prevents the destruction of the tubular morphology during the calcination process. After calcination, novel high photoactivity TiO2nanotubes are obtained with perfect open-ended tubular morphology and fine anatase phase. The sample shows the highest photoactivity of all the samples, which is 2 times higher than that of TiO2nanorods, and is 4 times higher than TiO2nanoparticles (P-25).

Graphical abstract: Chemical morphology freezing: chemical protection of the physical morphology of high photoactivity anatase TiO2nanotubes

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Publication details

The article was received on 06 Apr 2009, accepted on 30 Apr 2009, published on 21 May 2009 and first published online on 21 May 2009


Article type: Communication
DOI: 10.1039/B906896A
Citation: J. Mater. Chem., 2009,19, 4692-4694
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    Chemical morphology freezing: chemical protection of the physical morphology of high photoactivity anatase TiO2nanotubes

    T. Wang, S. Wang, W. Chen, W. Wang, Z. Xu, Y. Liu and T. Hori, J. Mater. Chem., 2009, 19, 4692
    DOI: 10.1039/B906896A

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