Improved photocatalytic activity by utilizing the internal electric field of polar semiconductors: a case study of self-assembled NaNbO3 oriented nanostructures

Linqin Jiang; Yaohong Zhang; Yu Qiu; Zhiguo Yi

doi:10.1039/C3RA45954C

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Improved photocatalytic activity by utilizing the internal electric field of polar semiconductors: a case study of self-assembled NaNbO₃ oriented nanostructures†

Linqin Jiang,^a Yaohong Zhang,^a Yu Qiu^b and Zhiguo Yi*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
E-mail: zhiguo@fjirsm.ac.cn

^b New Energy Technology Center, Shanghai Institute of Microsystems and Information Technology, Chinese Academy of Sciences, Shanghai 201807, China

Abstract

How to promote separation of photo-generated carriers is one of the key issues determining the photocatalytic activity of a semiconductor. In this paper, we report a new strategy that utilizing an internal electric field of polar semiconductors to improve photocatalytic activity and, proving it by liquid-phase photodegradation (photocatalytic RhB degradation) as well as gas-phase photodegradation (photocatalytic oxidation of CH₄) experiments upon the self-assembled NaNbO₃ oriented nanocuboids that were fabricated by a facial hydrothermal route. The formation conditions and mechanisms of the ordered nanostructures were also discussed.

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Article information

DOI: https://doi.org/10.1039/C3RA45954C
Article type: Paper
Submitted: 20 Oct 2013
Accepted: 30 Oct 2013
First published: 30 Oct 2013

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RSC Adv., 2014,4, 3165-3170

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Improved photocatalytic activity by utilizing the internal electric field of polar semiconductors: a case study of self-assembled NaNbO₃ oriented nanostructures

L. Jiang, Y. Zhang, Y. Qiu and Z. Yi, RSC Adv., 2014, 4, 3165 DOI: 10.1039/C3RA45954C

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