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Nice work. Questions:
(1) Why the addition of Fe ions prohibit the formation of other TiO2 phases (rutile and brookite)? This is actually interesting approach to get pure anatase TiO2 using facile method.
(2) In Fe doped TiO2, do you observe Fe2+ or only Fe3+?
(3) The addition of Fe ions seems changing the morphology to irregularly-shaped spherical particles (defects related?)
(4) minor comment: the decreasing particle size by Fe addition does not indicate anatase phase preservation.
Nice work. Questions:
(1) Why the addition of Fe ions prohibit the formation of other TiO2 phases (rutile and brookite)? This is actually interesting approach to get pure anatase TiO2 using facile method.
(2) In Fe doped TiO2, do you observe Fe2+ or only Fe3+?
(3) The addition of Fe ions seems changing the morphology to irregularly-shaped spherical particles (defects related?)
(4) minor comment: the decreasing particle size by Fe addition does not indicate anatase phase preservation.