We report on the fabrication process of TiO2-based aeromaterial for environmental applications, such as wastewater treatment or as activated photocatalytic air filters. The TiO2 aeromaterial is obtained by Atomic Layer Deposition technique with the thickness of 50 nm on a substratetemplate consisting of ZnO microtetrapods, followed by the selective chemical etching of the ZnO template. The morphological and optical properties, chemical composition and crystalline quality of the fabricated aeromaterial are investigated. By implementing specific technological steps to enhance the crystalline quality of the TiO2 aeromaterial, it was possible to obtain materials with either anatase phases or a mixed anatase-rutile phase.