Crystal splitting and enhanced photocatalytic behavior of TiO2 rutile nano-belts induced by dislocations

Seung I. Cha; Kyu Hyeon Hwang; Yu Hyun Kim; Min Ju Yun; Seon Hee Seo; Yun Ji Shin; Jeong Hyun Moon; Dong Yoon Lee

doi:10.1039/C2NR33028H

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Crystal splitting and enhanced photocatalytic behavior of TiO₂rutile nano-belts induced by dislocations†

Seung I. Cha,*^a Kyu Hyeon Hwang,^a Yu Hyun Kim,^a Min Ju Yun,^a Seon Hee Seo,^a Yun Ji Shin,^b Jeong Hyun Moon^b and Dong Yoon Lee^a

Author affiliations

* Corresponding authors

^a Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute, Boolmosan-ro 10beon-gil, Seongsan-gu, Changwon 641-120, Korea
E-mail: sicha@keri.re.kr
Fax: +82-55-280-1590
Tel: +82-55-280-1649

^b Power Semiconductor Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute, Boolmosan-ro 10beon-gil, Seongsan-gu, Changwon 641-120, Korea

Abstract

Crystal splitting and enhanced photocatalytic activities caused by implied dislocations were observed in hierarchical TiO₂ nano-architectures prepared by one-pot hydrothermal synthesis in concentrated HCl. Microstructural observation revealed that the nanowires formed by continuous splitting of TiO₂ nano-belts, which is caused by a lattice misorientation of about 6°, were generated by an array of dislocations. In addition, the larger amount of dislocations implied in TiO₂ nano-architectures induces higher photocatalytic activities under ultra-violet illumination.

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Article information

DOI: https://doi.org/10.1039/C2NR33028H
Article type: Paper
Submitted: 04 Oct 2012
Accepted: 14 Nov 2012
First published: 19 Nov 2012

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Nanoscale, 2013,5, 753-758

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Crystal splitting and enhanced photocatalytic behavior of TiO₂ rutile nano-belts induced by dislocations

S. I. Cha, K. H. Hwang, Y. H. Kim, M. J. Yun, S. H. Seo, Y. J. Shin, J. H. Moon and D. Y. Lee, Nanoscale, 2013, 5, 753 DOI: 10.1039/C2NR33028H

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