Speaker
Description
Niobium doping of TiO$_2$ creates a conductive material with possible applications in, for example, energy storage, hydrogen production, and catalysis. When TiO2 is precipitated from HCl solutions containing minor Nb, the Nb in solution is quantitatively deposited with the TiO$_2$. Here, we investigate the structure of Nb doped in anatase and rutile produced from ilmenite digested in hydrochloric acid. XAS are used to characterise the environment of TiO$_2$ doped with 0.08 at-% Nb. The data show structural differences between Nb-doped anatase and rutile and demonstrate that Nb occupies a Ti site in TiO$_2$ with no near neighbours of Nb. Hydrolysis of Ti and Nb from acid solution, followed by calcination, leads to a well dispersed doped material, with no segregation of Nb. Production of Nb-doped TiO$_2$ by this method is a promising candidate to satisfy future demand for large quantities of this material where low-cost production from readily available natural resources is highly desirable.
| Do you intend to attend UM2022 | In person - Melbourne |
|---|---|
| Level of Expertise | Expert |
| Terms and conditions (Please confirm that you have read all the requirements and agree to the conditions) | Yes |
| Presenter Gender | Man |
| Pronouns | He/Him |
