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

Maria Visa, Mihaela Cosnita, Macedon Moldovan, Cosmina Andreea Marin and Maria Mihaly
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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

IJERPH, 2021, vol. 18, issue 8, 1-18

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.

Keywords: fly ash waste; platinum nanoparticles; industrial dyes; adsorption; photodegradation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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