Is the band gap of TiO2 is depended on the amount of TiO2 in mesoporous silica, even the calcination temparature is same?

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Alexander B. Shcherbakov

The amount of TiO2 affects the particles size, the bandgap of semiconductor depends on particle size due to quantization. See enclosed article, table 2. and fig. 6

Article TiO2-Mesoporous Silica Nanocomposites: cooperative effect in...

Luma M. Ahmed

Dear Deepa Khandekar ,

I agree withe the comment of Dr. Alexander B. Shcherbakov, and added the calcinated of any catalyst that lead to aggregate then change the cryatal size and band gap.

sincerely,

Dr. Luma

Hassan Alshamsi

You can adpot SEM images to study the relationship between band gap and particles size.

Deepa Khandekar

Thanks to all for your valuable answer