Issue 56, 2014
From the journal:

RSC Advances

Fabrication of black hierarchical TiO2 nanostructures with enhanced photocatalytic activity

Bo Chen,*a   Jeremy A. Beach,b   Deepam Maurya,a   Robert B. Mooreb  and  Shashank Priya*a  

* Corresponding authors

a Center for Energy Harvesting Materials and Systems, Virginia Tech, USA
E-mail: bochen09@vt.edu, spriya@vt.edu
Fax: +1-540-231-0745
Tel: +1-540-808-3623

b Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA

Abstract

Here, we report the fabrication of hierarchical TiO2 nanostructures with wire-in-tube architectures by hydrothermal treatment of anodic TiO2 nanotubes. The mechanism for this morphological evolution was understood by dissolution-precipitation of TiO62− octahedra. Sintering the hierarchical TiO2 nanostructures under vacuum condition created black TiO2 nanostructures, which show anatase phase with self-doped Ti3+ present in the bulk. Due to the reduced band gap, increased donor density, and enlarged active interface, the black hierarchical TiO2 nanostructures demonstrated efficient photocatalytic performance under both full spectrum and visible light illumination.

Graphical abstract: Fabrication of black hierarchical TiO2 nanostructures with enhanced photocatalytic activity

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Article information

DOI
https://doi.org/10.1039/C4RA04260C
Article type
Paper
Submitted
08 May 2014
Accepted
19 Jun 2014
First published
19 Jun 2014

RSC Adv., 2014,4, 29443-29449

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Fabrication of black hierarchical TiO2 nanostructures with enhanced photocatalytic activity

B. Chen, J. A. Beach, D. Maurya, R. B. Moore and S. Priya, RSC Adv., 2014, 4, 29443 DOI: 10.1039/C4RA04260C

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