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Relaxor ferroelectric and photocatalytic properties of BaBi4Ti4O15

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journal contribution
posted on 28.06.2019, 09:53 by Wenzhi Qi, Yaqiong Wang, Jiyue Wu, Zimeng Hu, Chenglong Jia, Hongtao ZhangHongtao Zhang
Aurivillius phase BaBi4Ti4O15 micro-sized powders were produced by solid-state reaction and their photocatalytic properties were reported for the first time. X-ray diffraction revealed the polar orthorhombic structure. BaBi4Ti4O15 ceramics exhibited diffuse phase transition at ~ 410 C. The freezing temperature of 274 C was obtained by fitting the Vogel-Fulcher law. The distinct ferroelectric domain switching current peaks in current - electric field (I-E) loop and piezoelectric coefficient d33 value of 7.0  0.1 pC/N at room temperature further demonstrated relaxor ferroelectric behavior of BaBi4Ti4O15. UV-vis absorption spectra indicated that BaBi4Ti4O15 had a direct band gap of 3.2 eV. The photocatalytic study showed 15 % degradation of Rhodamine B (RhB) solution by BaBi4Ti4O15 powders after 3.5 h UV-vis irradiation. The RhB degradation rate was further enhanced by depositing Ag nanoparticles on the BaBi4Ti4O15 powders surface. This work suggested that the relaxor ferroelectric BaBi4Ti4O15 is promising for photocatalytic applications.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Advances in Applied Ceramics: Structural, Functional and Bioceramics

Volume

118

Issue

7

Pages

418-424

Citation

QI, W. ... et al., 2019. Relaxor ferroelectric and photocatalytic properties of BaBi4Ti4O15. Advances in Applied Ceramics: Structural, Functional and Bioceramics, 118 (7), pp.418-424.

Publisher

© Institute of Materials, Minerals and Mining. Published by Taylor & Francis

Version

AM (Accepted Manuscript)

Publisher statement

This is an Accepted Manuscript of an article published by Taylor & Francis in Advances in Applied Ceramics on 27 June 2019, available online: http://www.tandfonline.com/10.1080/17436753.2019.1634943.

Acceptance date

18/06/2019

Publication date

2019-06-27

Copyright date

2019

ISSN

1743-6753

eISSN

1743-6761

Language

en