Anticorrosion Coated Stainless Steel as Durable Support for C-N-TiO2 Photo Catalyst Layer

Emile Salomon Massima Mouele; Mihaela Dinu; Anca Constantina Parau; Alina Vladescu; Myo Tay Zar Myint; Htet Htet Kyaw; Jamal Al-Sabahi; Mohammed Al-Abri; Sergey Dobretsov; Mohammed A Al Belushi; Rahma Al-Mamari; Mariana Braic; Leslie Felicia Petrik

doi:10.3390/ma13194426

Anticorrosion Coated Stainless Steel as Durable Support for C-N-TiO₂ Photo Catalyst Layer

Materials (Basel). 2020 Oct 5;13(19):4426. doi: 10.3390/ma13194426.

Authors

Emile Salomon Massima Mouele¹, Mihaela Dinu², Anca Constantina Parau², Alina Vladescu^{2

3}, Myo Tay Zar Myint⁴, Htet Htet Kyaw⁵, Jamal Al-Sabahi⁵, Mohammed Al-Abri^{5

6}, Sergey Dobretsov^{7

8}, Mohammed A Al Belushi^{7

8}, Rahma Al-Mamari^{7

8}, Mariana Braic², Leslie Felicia Petrik¹

Affiliations

¹ Environmental and Nano Sciences Group, Department of Chemistry, University of the Western Cape, Bellville 7535, South Africa.
² Research Center for Advanced Surface Processing and Analysis by Vacuum Technologies (ReCAST), National Institute for Optoelectronics (INOE) 2000, 409 Atomistilor St., Magurele, 077125 Bucharest, Romania.
³ Research Center for Physical Materials Science and Composite Materials, National Research Tomsk Polytechnic University, Lenin Avenue 43, Tomsk 634050, Russia.
⁴ Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, 123 Al-Khoud, Muscat 123, Oman.
⁵ Nanotechnology Research Center, Sultan Qaboos University, P. O. Box 33, Al-Khoud, Muscat 123, Oman.
⁶ Petroleum and Chemical Engineering Department, Sultan Qaboos University, P. O. Box 33, Al-Khoud, Muscat 123, Oman.
⁷ Department of Marine Science and Fisheries, Sultan Qaboos University, P. O. Box 34, Al-Khoud, Muscat 123, Oman.
⁸ Center of Excellence in Marine Biotechnology, Sultan Qaboos University, P. O. Box 50, Al-Khoud, Muscat 123, Oman.

Abstract

The development of durable photocatalytic supports resistant in harsh environment has become challenging in advanced oxidation processes (AOPs) focusing on water and wastewater remediation. In this study, stainless steel (SS), SS/Ti (N,O) and SS/Cr-N/Cr (N,O) anticorrosion layers on SS meshes were dip-coated with sol gel synthesised C-N-TiO₂ photo catalysts pyrolysed at 350 °C for 105 min, using a heating rate of 50 °C/min under N₂ gas. The supported C-N-TiO₂ films were characterised by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Raman spectroscopy. The results showed that C-N-TiO₂ was successfully deposited on anticorrosion coated SS supports and had different morphologies. The amorphous C and TiO₂ were predominant in C-N-TiO₂ over anatase and rutile phases on the surface of SS and anticorrosion supports. The C-N-TiO₂ coated films showed enhanced photocatalytic activity for the decolouration of O.II dye under both solar and UV radiation. The fabricated C-N-TiO₂ films showed significant antibacterial activities in the dark as well as in visible light. Herein, we demonstrate that SS/Ti(N,O) and SS/Cr-N/Cr(N,O) anticorrosion coatings are adequate photocatalytic and corrosion resistant supports. The C-N-TiO₂ photo catalytic coatings can be used for water and wastewater decontamination of pollutants and microbes.

Keywords: advanced oxidation processes; anticorrosion; antimicrobial activity; coating; dye decolouration; photo catalysis; pollutants; wastewater.

Abstract

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