Crystalline structure of nanotitania (anatase, rutile) and the morphology of primary and secondary particles can be regulated using low-amount additions of Na2SO4 (or K3PO4), NaOH or H2O2. Anions SO42- and PO43- can bind to Ti-containing species that lead to the formation of anatase nanocrystallites with sulfate and phosphate functionalities. According to TEM images, nanoparticles (rod-like, spherical or ellipsoidal) form different secondary structures (sheaf-like associates forming flower-shaped aggregates or spherical associates) possessing different textural porosity analyzed using nitrogen adsorption-desorption isotherms. Additives form surface structures, which can affect particle-particle interactions in the liquid media. (C) 2013 Elsevier B. V. All rights reserved.