Thin films of tio2 is made with sol gel (dip-coating) I want to know why when tio2 is doped with nickel structure of anatase change to brookite?

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Per Arvid Löthman

Despite of water to precursor ratio, solution pH, reaction temperature, nickel catalyses the crystallographic transformation of anatase (tetragonal) to brookite (orthorombic) which are both metastable. Just a quick beginning, more soon :) Hope this helps a little bit :) Best, Per

Abdul Waheed

How to make TiO2 Seed solution using commercial anatase TiO2 powder?

Means which solvent and surfactants, I required to prepare TiO2 seed solution from commercial anatase powder..?? I dissolved this powder in conc. H2SO4, it dissolved but after spin coating on substrate and drying it again becomes powder. Need your suggestions. thnx