About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Honorary Symposium in Celebration of Prof. Michel Barsoum’s 70th Birthday
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| Presentation Title |
Electronic and Photocatalytic Properties of Colloidal One-Dimensional Titanium Oxide Lepidocrocite Nanofilaments |
| Author(s) |
Adam Walter, Gregory R. Schwenk, Jacob Cope, Michel Barsoum |
| On-Site Speaker (Planned) |
Adam Walter |
| Abstract Scope |
One-dimensional filaments with a titanium oxide lepidocrocite structure (1DL) have proven to be highly active in photocatalytic applications. As a material with a base unit of just 2x2 titanium octahedra in cross section, they exhibit quantum confinement in two dimensions. Their unique electronic properties will be presented. In the context of application, as a highly negatively charged surface, the colloidal 1DLs destabilize to form flocs upon addition of organic cations. They exhibit exceptional affinity for cationic dyes – with uptakes of nearly 0.8 g dye per g of 1DL. This high adsorption capacity enables sensitization behavior, in which dyes can be decolorized by more than 70% in 30 min, using only the visible spectrum. Other photocatalytic applications such as introductory work related to water splitting, along with unique, concentration dependent, properties will be presented. |