TiO₂ Coatings Via Atmospheric-Pressure Plasma-Enhanced Chemical Vapor Deposition for Enhancing the UV-Resistant Properties of Transparent Plastics

Abstract

Herein, TiO 2 coatings were deposited on photodegradable polymers for protection from UV irradiation using the atmospheric-pressure plasma-enhanced chemical vapor deposition (AP-PECVD) technique. Polymethylmethacrylate (PMMA) and polycarbonate (PC) substrates were coated with titanium tetraisopropoxide as the precursor in an open-air atmosphericpressure nonequilibrium argon plasma jet. The AP-PECVDderived TiO 2 coatings exhibited good adhesion to PMMA and PC. The TiO 2 coatings could shield more than 99% of UV light in the wavelength range of 200−300 nm, without affecting the transmittance of visible light. UV irradiation tests on polymer films demonstrated that the degradation rates of PMMA and PC were significantly reduced by one-tenth after they were coated with TiO 2 films.

Low Temperature Open-Air Plasma Deposition of SrTiO3 Films for Solar Energy Harvesting: Impact of Precursors on the Properties and Performances

“…Atmospheric-pressure plasma-enhanced chemical vapor deposition (AP-PECVD) enables high deposition rates, easy compositional control, high step coverage, minimal residue generation, and the possibility to form crystalline oxide semiconductor thin films at reduced temperature, thanks to the reactivity of plasma. − In addition, operating under atmospheric-pressure conditions allows for the injection of precursors as aerosols, vastly extending the range of suitable precursors because of relying more on their solubility rather than volatility . Yet, literature reports on the AP-PECVD of oxide thin films for the photocatalytic and photoelectrochemical application mainly focus on simple oxides, such as TiO 2, ZnO, and SiO 2 . − Therefore, the present study investigates the AP-PECVD of binary metal oxide thin films for solar energy harvesting. In particular, we report the atmospheric-pressure production of crystalline SrTiO 3 thin films on large-area substrates from the AP-PECVD reaction of halogen-free precursors.…”

UV-shielding properties of a cost-effective hybrid PMMA-based thin film coatings using TiO2 and ZnO nanoparticles: a comprehensive evaluation

“…The electron–hole pair state of the TiO 2 sites has been proved to be highly reactive; thus, due to the recombination of these pairs, and photogenerated charge carriers, the quantum efficiency of this material is relatively high 32 , 33 . Xu et al 21 investigated the transparency of PC/PMMA coated with TiO 2 film with granular morphology. It was observed that adding TiO 2 film could significantly enhance the stability against UV radiation.…”

“…Titanium oxide (TiO 2 ) is considered as a practical nanoparticle in surface protection applications since it has a wide energy band gap of 3 eV , showing a strong UV light cutoff. Previously conducted works proved that thin films including TiO 2 could effectively protect UV-degradable materials, especially PMMA 21 , 22 . Harb et al 23 successfully synthesized homogeneous PMMA-TiO 2 and PMMA-ZrO 2 nanocomposites and studied their protective properties.…”

Synthesis and Applications of TiO2‐based Nanostructures as Photocatalytic Materials

“…The gasification capacity and reducibility of the composite are increased. Xu et al [84] used CVD method to coat TiO 2 film on the polymer of polymethyl methacrylate and polycarbonate. The degradation rate constants of PMMA and PC decreased from 0.36 h À 1 to 0.018 h À 1 and from 0.23 h À 1 to 0.029 h À 1 , respectively, under single UV irradiation for 5 h. It indicates that the TiO 2 coatings prepared by this method can prevent the polymer degradation of PMMA and PC and improve their stability under UV irradiation.…”

“…The gasification capacity and reducibility of the composite are increased. Xu et al [84] . used CVD method to coat TiO 2 film on the polymer of polymethyl methacrylate and polycarbonate.…”