TiO2 in rutile phase has band gap - 3.02 eV and in anatase phase - 3.2 eV. What happens if we take the TiO2 powder consisting of these two phases. Does the band gap changes, according to the quantity of phase?
Rüdiger Mitdank
Dear Padmavathi,
if the powder consists of two phases, These phases are separated by a grain boundary. Every grain is a microcrystal with the typical properties of the Single Phase. Therefore, I expect that two different taps can be found.
Yours
R. Mitdank
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Padmavathi Bandaru
Dear Mitdank,
Thank you so much for your response. Yes, band gap of a material depends on the crystal structure of a phase and if a material has two phases, band gap tunes according to that.
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