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Fly Ash Waste Recycling by Pt/TiO 2 Incorporation for Industrial Dye Removal

Author

Listed:
  • Maria Visa

    (Research Center: Renewable Energy Systems and Recycling, Transilvania University of Brasov, Eroilor 29, 500036 Brasov, Romania)

  • Mihaela Cosnita

    (Research Center: Renewable Energy Systems and Recycling, Transilvania University of Brasov, Eroilor 29, 500036 Brasov, Romania)

  • Macedon Moldovan

    (Research Center: Renewable Energy Systems and Recycling, Transilvania University of Brasov, Eroilor 29, 500036 Brasov, Romania)

  • Cosmina Andreea Marin

    (Research Center for Environmental Protection and Eco-Friendly Technologies (CPMTE), University POLITEHNICA of Bucharest, 060042 București, Romania)

  • Maria Mihaly

    (Research Center for Environmental Protection and Eco-Friendly Technologies (CPMTE), University POLITEHNICA of Bucharest, 060042 București, Romania
    Inorganic Chemistry, Physical Chemistry and Electrochemistry Department, Faculty of Applied Chemistry and Materials Science, University POLITEHNICA of Bucharest, 060042 București, Romania)

Abstract

New materials are obtained by transforming fly ash wastes into a valuable composite, with tandem adsorption and photodegradation properties. Mild hydrothermal synthesis, from titanium dioxide, platinum nanoparticles and zeolite materials obtained from a waste, fly ash, as support, was involved in the composite preparation. The platinum nanoparticles extended the photocatalytic activity of the composite in visible range (Eg = 2.1 eV). The efficiency of tandem adsorption and photocatalytic activity of the new composite were determined to be 25% for Bemacid Blau and 43.89% for Bemacid Rot after 360 min, the irradiation time. The addition of H 2 O 2 improves the process efficiency up to 80.70% and 93.43%, respectively. The Pt nanoparticle (PtNP) contribution led to the band gap energy change to Vis light (400 nm), thus suggesting the possibility of photocatalysis under the action of a fraction of natural light.

Suggested Citation

  • Maria Visa & Mihaela Cosnita & Macedon Moldovan & Cosmina Andreea Marin & Maria Mihaly, 2021. "Fly Ash Waste Recycling by Pt/TiO 2 Incorporation for Industrial Dye Removal," IJERPH, MDPI, vol. 18(8), pages 1-18, April.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:8:p:3887-:d:531870
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    Cited by:

    1. Jinkai Shu & Bozhi Ren & Wei Zhang & An Wang & Sen Lu & Shuyu Liu, 2022. "Influencing Factors and Kinetics of Modified Shell Powder/La-Fe-TiO 2 Photocatalytic Degradation of Pyridine Wastewater," IJERPH, MDPI, vol. 19(22), pages 1-16, November.

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