Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Structural, Optical and Photocatalytic Properties of Aluminium Scrap from End – of – Life Vehicles Modified TiO2 Nanoparticle

Ramona – Crina Suciu
* ORCID logo ,
Simona Elena Avram
* ,
Andreia Molea
,
Codruta Varodi
ORCID logo ,
Cristian Tudoran
,
Maria Stefan
ORCID logo ,
Adriana Popa
,
Dana Toloman
ORCID logo
Version 1 : Received: 1 December 2023 / Approved: 4 December 2023 / Online: 4 December 2023 (15:20:15 CET)

How to cite: Suciu, R.–.C.; Avram, S.E.; Molea, A.; Varodi, C.; Tudoran, C.; Stefan, M.; Popa, A.; Toloman, D. Structural, Optical and Photocatalytic Properties of Aluminium Scrap from End – of – Life Vehicles Modified TiO2 Nanoparticle. Preprints 2023, 2023120192. https://doi.org/10.20944/preprints202312.0192.v1 Suciu, R.–.C.; Avram, S.E.; Molea, A.; Varodi, C.; Tudoran, C.; Stefan, M.; Popa, A.; Toloman, D. Structural, Optical and Photocatalytic Properties of Aluminium Scrap from End – of – Life Vehicles Modified TiO2 Nanoparticle. Preprints 2023, 2023120192. https://doi.org/10.20944/preprints202312.0192.v1

Abstract

The recycling of wastes to obtain value-added products is a great challenge in the sustainable economy. In our studies, a mixed precursor containing aluminium scrap from end – of – life vehicles and TiO2 Degussa P25 was used to prepare TiO2 modified Al photocatalyst through solid state reaction. Al scrap and TiO2 Degussa P25 in the ration of n(Ti) / n(Al) = x (x = 0.0 - 2.5%), and acetylacetonate and Tween 80 was mixed under magnetic stirring and sintered using a con-ventional furnance at 550°C. DTA – TG – DTG, X – ray diffraction, Fourier – transform infrared, UV – Vis and photoluminescence spectroscopies were assed to investigate the thermal, structural, optical properties and photocatalytic activity. The effect of aluminium concentration on the characteristics of TiO2 Degussa P25 depending on the above instruments are studied. XRD revealed that the materials have crystal structure of anatase TiO2, rutile TiO2 and aluminium. The opto-electronic properties show that Al addition shifted the absorption spectra toward the visible range. The photocatalytic performance of Al – TiO2 composites was quantified by the degradation of Allura Red solution under a visible condition. The highest photocatalytic activity (79.99%) was achieved for the sample containing 0.5% Al and a higher concentration of Al particles shields the active centres of the semiconductor, thus reducing its photocatalytic activity. Aluminium scrap from end-of-life vehicles can be a source of raw material to be considered in semiconductor production. The spin-trapping technique evidenced that •O2- was the main species generated responsible for the Allura Red degradation.

Keywords

Aluminiu scrap; end – of – life vehicles; composite material; photocatalysis

Subject

Environmental and Earth Sciences, Environmental Science

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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