Qi, W;
Wang, Y;
Wu, J;
Hu, Z;
Jia, C;
Viola, G;
Zhang, H;
(2020)
Relaxor behavior and photocatalytic properties of BaBi₂Nb₂O₉.
Journal of the American Ceramic Society
, 103
(1)
pp. 28-34.
10.1111/jace.16730.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Relaxor behavior and photocatalytic properties of BaBi₂Nb₂O₉ |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/jace.16730 |
| Publisher version: | https://doi.org/10.1111/jace.16730 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Aurivillius phase, BaBi2Nb2O9, photocatalytic properties, polar nanoregions, relaxor ferroelectric |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10112616 |
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