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Issue 8, 2011
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3D hierarchical flower-like TiO2 nanostructure: morphology control and its photocatalytic property

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Abstract

3D hierarchical flower-like TiO2 nanostructures were synthesized via a facile solvothermal method combining a calcination process. A series of electron microscopy characterization results suggest that the growth of 3D hierarchical flower-like TiO2 nanostructures is governed by a nucleation and nuclei growth–dissolution–recrystallization growth mechanism from time-dependent morphology evolution. The influence of the experimental parameters such as reaction species, temperature, and time on the morphology growth was systematically studied. Importantly, the prepared 3D hierarchical flower-like TiO2 nanostructures showed enhanced photocatalytic activity compared with Degussa P25 for the degradation of phenol under UV light irradiation, which is attributed to its special hierarchical porous structure, good permeability, high light-harvesting capacity and more surface active sites. Electron spin resonance (ESR) detection of active oxygen species (hydroxyl radicals) and the total organic carbon (TOC) changes are also investigated to evaluate the degradation efficacy.

Graphical abstract: 3D hierarchical flower-like TiO2 nanostructure: morphology control and its photocatalytic property

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Publication details

The article was received on 14 Nov 2010, accepted on 01 Feb 2011 and first published on 01 Mar 2011


Article type: Paper
DOI: 10.1039/C0CE00851F
Citation: CrystEngComm, 2011,13, 2994-3000
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    3D hierarchical flower-like TiO2 nanostructure: morphology control and its photocatalytic property

    G. Tian, Y. Chen, W. Zhou, K. Pan, C. Tian, X. Huang and H. Fu, CrystEngComm, 2011, 13, 2994
    DOI: 10.1039/C0CE00851F

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