Photocatalytic TiO2-based coatings for environmental applications

Photocatalytic Investigation of Aerosol-Assisted Atmospheric Pressure Plasma Deposited Hybrid TiO2 Containing Nanocomposite Coatings

“…However, the applications of photocatalytic NPs, and specifically those addressing water depollution via AOPs, requires the careful consideration of the technological and safety issues concerning their recovery from water bodies. To tackle the critical issue of NP dispersion in the environment and the related hazard for human and/or environmental health [ 12 ] and to circumvent the evident complexity of NP recovery and the scarce viability of filtration processes for this purpose, a range of procedures have been proposed for NP deposition onto supports suited for their integration in water treatment plants, taking advantage of both bottom-up and top-down coating fabrication processes [ 19 ]. Indeed, the immobilization of a nanostructured photocatalyst onto a substrate suitable to be integrated into systems and devices, such as photoreactors to be included in treatment processes, represents a more feasible and sustainable solution to prevent dispersion into the environment.…”

“…Indeed, a wide range of techniques is currently available for conformally depositing a film of photocatalytic nanocomposite onto different solid substrates and addressing specific applications. Among techniques that include sol–gel, hydrothermal, chemical, and physical vapor deposition and dip coating [ 19 ], plasma deposition methods, in particular those relying on the use of aerosol-assisted atmospheric pressure (AAAP) plasma, are particularly advantageous, as they can be successfully applied to substrates with different compositions and geometries, are flexible, feature 3D textures, and are characterized by low resistance to high temperatures and pressures. In addition, these methods are extremely versatile, as they allow the composition of the host matrix as well as the NP fillers to be varied easily by simply tuning the deposition parameters, making them suitable for the realization of coatings for diverse application fields [ 22 ].…”

Moss-like Hierarchical Architecture Self-Assembled by Ultrathin Na2Ti3O7 Nanotubes: Synthesis, Electrical Conductivity, and Electrochemical Performance in Sodium-Ion Batteries

“…Titanium compounds are applied in a wide range of applications including paints, catalysts, plastics, coatings, sensors, hygienic products, cosmetics, pharmaceuticals, and even foods [ 3 , 4 , 5 , 6 , 7 , 8 ]. Yearly world titanium demand (in TiO 2 -units) is estimated around 6 million tons growing by about 3% per year [ 9 , 10 , 11 ].…”

Transparent TiO2 thin films with high photocatalytic activity for indoor air purification

“…Nanopowderbased coatings with a thickness of several micrometres have a milky non-transparent surface. 6 Despite this, several studies have been conducted on TiO 2 thin lms and coatings, [3][4][5][6][7][8][9][10][11][12][13] and still higher photocatalytic activity has been achieved using thick coatings prepared from TiO 2 nanopowders. [7][8][9] In particular, Zou and co-authors obtained 55% conversion of 100 ppm of toluene aer 60 min of ultraviolet (UV-A) irradiation on a 7 mm-thick TiO 2 coating prepared from P25 powder.…”