@article{8667187,
  abstract     = {{This study explores the synergetic effect of the photocatalytic behavior of TiOx plasma-deposited coatings and atmospheric pressure plasma treatment on the degradation of remazol yellow-RR (RYRR) in aqueous solution. Therefore, the first part of this paper was dedicated to the development of TiOx coatings on substrates with various geometries and dimensions via a non-thermal atmospheric pressure plasma assisted polymerization using tetraisopropyl orthotitanate (TIOT) as a precursor. The plasma deposition processes were performed as a function of the deposition potential. The surface chemistry, morphology, structural and hydrophilic properties of the obtained TiOx coating were investigated by means of X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and water contact angle (WCA) analysis. Results revealed the formation of TiOx characteristic chemical groups in a process that is highly dependent on the deposition parameters. TiOx coating were super-hydrophilic and exhibited a cauliflower-like morphology in which the anatase crystalline structure is predominated over the rutile phase. In the second part of the study, the photocatalytic nature of TiOx coatings and the simultaneous effect of an array of multi-jet plasma treatment on the degradation efficiency of RYRR molecules in aqueous solution are examined. The reactive species involved during the TiOx deposition and degradation processes were examined via optical emission spectroscopy (OES). The degradation efficiency was investigated using Uv-Vis spectroscopy. RYRR degradation and the formation of degradation products were further confirmed by high-performance liquid chromatography (HPLC). The variation in pH, total organic carbon (TOC) and electrical conductivity of the plasma treated RYRR was also assessed. Furthermore, the generation of reactive oxygen species (ROS) such as OH center dot radicals and H2O2 in the solution was also studied spectroscopically. Overall, results showed that the degradation rate after the concurrent plasma-TiOx photocatalytic reactions was significantly higher than after plasma treatment alone due to the formation of higher concentrations of various ROS.}},
  articleno    = {{125642}},
  author       = {{Pandiyaraj, K. Navaneetha and Vasu, D. and Padmanabhan, P. V. A. and Ghobeira, Rouba and Esbah Tabaei, Parinaz Saadat and Cools, Pieter and De Geyter, Nathalie and Morent, Rino and Deshmukh, R. R. and Pichumani, M.}},
  issn         = {{0257-8972}},
  journal      = {{SURFACE & COATINGS TECHNOLOGY}},
  keywords     = {{Materials Chemistry,General Chemistry,Surfaces,Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics,Non-thermal plasma jet,TiOx coating,Surface analysis,RYRR solution,Photocatalytic reaction,DIELECTRIC BARRIER DISCHARGE,CHEMICAL-VAPOR-DEPOSITION,DYE WASTE-WATER,AZO-DYE,PHOTOCATALYTIC PROPERTIES,OPERATING PARAMETERS,NONTHERMAL PLASMA,METHYLENE-BLUE,GLOW-DISCHARGE,SOL-GEL}},
  language     = {{eng}},
  pages        = {{15}},
  title        = {{Synergetic effect of the catalytic action of plasma jet deposited TiOx coatings and atmospheric pressure plasma treatment on the degradation of RYRR}},
  url          = {{http://doi.org/10.1016/j.surfcoat.2020.125642}},
  volume       = {{389}},
  year         = {{2020}},
}

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