Qi_et_al-2019-Journal_of_the_American_Ceramic_Society.pdf (1.06 MB)
Relaxor behavior and photocatalytic properties of BaBi2Nb2O9
journal contribution
posted on 2019-08-14, 10:22 authored by Wenzhi Qi, Yaqiong Wang, Jiyue Wu, Zimeng Hu, Chenglong Jia, Giuseppe Viola, Hongtao ZhangHongtao Zhang, Haixue YanLead‐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 SocietyVolume
103Issue
1Pages
28 - 34Publisher
WileyVersion
- AM (Accepted Manuscript)
Rights holder
© The American Ceramic SocietyPublisher 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
2019-08-07Publication date
2019-09-06Copyright date
2019ISSN
0002-7820eISSN
1551-2916Language
- en