Qi_et_al-2019-Journal_of_the_American_Ceramic_Society.pdf (1.06 MB)
0/0

Relaxor behavior and photocatalytic properties of BaBi2Nb2O9

Download (1.06 MB)
journal contribution
posted on 14.08.2019 by Wenzhi Qi, Yaqiong Wang, Jiyue Wu, Zimeng Hu, Chenglong Jia, Giuseppe Viola, Hongtao Zhang, Haixue Yan
Lead‐free Aurivillius phase BaBi2Nb2O9 powders were prepared by solid‐state reaction. Ferroelectric measurements on BaBi2Nb2O9 (BBNO) ceramics at room temperature provided supporting evidence for the existence of polar nanoregions (PNRs) and their reversible response to an external electric field, indicating relaxor behavior. The photocatalytic degradation of Rhodamine B reached 12% after 3 hours irradiation of BBNO powders under simulated solar light. Silver (Ag) nanoparticles were photochemically deposited onto the surface of the BBNO powders and found to act as electron traps, facilitating the separation of photoexcited charge carriers; thus, the photocatalytic performance was significantly improved. The present study is the first examination of the photochemical reactivity of a relaxor ferroelectric within the Aurivillius family with PNRs.

Funding

Chinese Scholarship Council

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of the American Ceramic Society

Volume

103

Issue

1

Pages

28 - 34

Publisher

Wiley

Version

AM (Accepted Manuscript)

Rights holder

© The American Ceramic Society

Publisher statement

This is the peer reviewed version of the following article: Qi, W. ... et al., 2019. Relaxor behavior and photocatalytic properties of BaBi2Nb2O9. Journal of the American Ceramic Society, 103 (1), pp.28-34, which has been published in final form at https://doi.org/10.1111/jace.16730. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Acceptance date

07/08/2019

Publication date

2019-09-06

Copyright date

2019

ISSN

0002-7820

eISSN

1551-2916

Language

en

Depositor

Dr Hongtao Zhang

Exports

Logo branding

Exports