Effect of Ferroelectricity on Solar-Light-Driven Photocatalytic Activity of BaTiO3? Influence on the Carrier Separation and Stern Layer Formation
Journal article
Cui, Y, Briscoe, J and Dunn, S (2013). Effect of Ferroelectricity on Solar-Light-Driven Photocatalytic Activity of BaTiO3? Influence on the Carrier Separation and Stern Layer Formation. Chemistry of Materials. 25 (21), pp. 4215-4223. https://doi.org/10.1021/cm402092f
| Authors | Cui, Y, Briscoe, J and Dunn, S |
|---|---|
| Abstract | BaTiO3 is used as a target catalyst to probe the influence of ferroelectricity on the decolorization of a typical dye molecule—Rhodamine B—under simulated solar light. We show that there is a 3-fold increase in the decolorization rate using BaTiO3 with a high tetragonal content compared to predominantly cubic material. This is ascribed to the ferroelectricity of the tetragonal phase. The influence of ferroelectricity ensures a tightly bound layer of dye molecule and also acts to separate the photoexcited carriers due to the internal space charge layer. Both of these features act to enhance the catalytic performance. When nanostructured Ag is photochemically deposited on the surface of the BaTiO3, we find a further increase in the reaction rate that gives complete decolorization of the dye in around 45 min. |
| Year | 2013 |
| Journal | Chemistry of Materials |
| Journal citation | 25 (21), pp. 4215-4223 |
| Publisher | ACS Publications |
| Digital Object Identifier (DOI) | https://doi.org/10.1021/cm402092f |
| Publication dates | |
| 17 Oct 2013 | |
| Publication process dates | |
| Deposited | 11 Jan 2019 |
| Accepted | 17 Sep 2013 |
| Accepted author manuscript | License |
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