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Experimental conditions for the sol-gel synthesis of TiO2 were modified by using Polyethylene glycol (PEG) as well as an addition of acid catalyst. Synthesis of brookite and mixed brookite with rutile was obtained. X-ray powder diffraction and Micro Raman measurements confirmed the crystallization of brookite while using pure PEG4000 with low molar acid concentration and a mixed brookite with rutile...
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