Nano

SKKU Advanced Institute of Nano Technology (성균관대학교 성균나노과학기술원)
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Enhanced Photocatalytic Activity by the Combined Influence of Ferroelectric Domain and Au Nanoparticles for BaTiO3 Fibers

  • Zhang, Xiaoshan (School of Material Science and Engineering University of Jinan) ;
  • Huan, Yu (School of Material Science and Engineering University of Jinan) ;
  • Zhu, Yuanna (School of Material Science and Engineering University of Jinan) ;
  • Tian, Hui (School of Material Science and Engineering University of Jinan) ;
  • Li, Kai (School of Material Science and Engineering University of Jinan) ;
  • Hao, Yanan (State Key Laboratory of Information Photonics and Optical Communications & School of Science Beijing University of Posts and Telecommunications) ;
  • Wei, Tao (School of Material Science and Engineering University of Jinan)
  • Received : 2018.09.29
  • Accepted : 2018.11.22
  • Published : 2018.12.31
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Abstract

Ferroelectric particles have been applied in the photocatalytic field because the spontaneous polarization results in the internal electric field, which can accelerate the separation and migration of photogenerated carriers. In this study, the $BaTiO_3$ (BT) fibers are synthesized by electrospinning. The BT fibers calcined above $800^{\circ}C$ exhibit a strong ferroelectric property, which is verified by a typical butterfly-shaped displacement-voltage loop. It is found that the BT fibers with the single-domain structure exhibit better photocatalytic performance than that with the multi-domain configuration. When the single-domain transforms into multi-domain, the integrated internal electric field correspondingly breaks up, inducing that the internal electric field might cancel each other out and diminish the separation of photogenerated carriers. Also, the Au nanoparticles can improve the photocatalytic activity further on account of the surface plasmon resonance. Therefore, it is suggested that Au nanoparticles decorated on ferroelectric BT nanomaterials are promising photocatalysts.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, China Postdoctoral Science Foundation, Shandong Provincial Natural Science Foundation, University of Jinan

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