Discovered Method for Scalable, Eco‐Friendly, and Low‐Waste Extraction of TiO ₂ Nanoparticles From Ilmenite (FeTiO ₃ ) #

In this Rapid Communication, we introduce a new method for the first time to extract nanostructured titanium dioxide (TiO 2 ) directly from the mineral ilmenite (FeTiO 3 ). The traditional extraction process typically involves several steps that require specialized equipment, toxic chemicals, and a large manufacturing facility, necessitating a substantial capital investment. Our new glass recrystallization method enables environmentally friendly, cost‐effective production of nanostructured TiO 2 , yielding simpler, less wasteful products and enabling scalable extraction of nanostructured TiO 2 from FeTiO 3 . As a result, well‐dispersed, needle‐shaped rutile TiO 2 nanoparticles measuring 200 nm in length and 40 nm in width are produced. Conversely, oval‐shaped anatase TiO 2 nanoparticles with a length of 50 nm are formed without an annealing step. Both particle types are well dispersed without surface treatment. This innovative process enables easy scaling of nanostructured TiO 2 production.