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<p>In the present research work, aluminum (Al) recycled from soda cans was coated with a nanocomposite based on titanium dioxide (TiO<sub>2</sub>) modified with 5 wt. % of graphene oxide (TiGO) by the spin coating technique. The physical stability of TiGO deposited on the Al substrate (Al-TiGO) was tested by washings and analyzed by Fourier transform infrared (FTIR) spectroscopy, energy dispersive X-ray (EDS) analysis and X-ray diffraction (XRD) studies, which provided data about the chemical composition and crystalline structure. In addition, scanning electron microscopy (SEM) images revealed the presence of a homogeneous TiGO coating with average thickness of 5.8 µm deposited on the Al substrate. Also, the Raman analysis of the TiGO sample found D and G bands related to graphene oxide. This compound could increase the surface area of TiO<sub>2</sub> from 73 to 113 m<sup>2</sup>/g and reducing its bandgap from 2.7 to 2.6 eV, respectively. The photocatalytic performance of Al-TiGO was evaluated in the carbendazim degradation, reaching 92% under UV light for 240 min. In this sense, the efficiency of Al-TiGO was 8.9% higher than that of TiGO after four reuse cycles. Furthermore, the scavenger tests identified OH<sup>−</sup> as the most active oxidizing species. Therefore, according to the photocatalytic properties, easy manipulation, lightness, high electron transfer, flexibility and availability of the aluminum substrate classified as recycling material, it can be stated that the Al-TiGO composite is a sustainable and innovative alternative for removing carbendazim from drinking water, which could be widely used in the agro-industrial sector.</p> Graphical Abstract <p></p>

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Sustainable reuse of aluminum cans coated with graphene oxide-TiO2 for the degradation of the fungicide carbendazim contained in wastewater

  • 期刊论文

  • 发表日期：

    2025年6月20日

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  • P. C. Hernández-Del Castillo,
  • G. A. Rolón-Cárdenas,
  • V. Rodríguez-González

摘要

In the present research work, aluminum (Al) recycled from soda cans was coated with a nanocomposite based on titanium dioxide (TiO2) modified with 5 wt. % of graphene oxide (TiGO) by the spin coating technique. The physical stability of TiGO deposited on the Al substrate (Al-TiGO) was tested by washings and analyzed by Fourier transform infrared (FTIR) spectroscopy, energy dispersive X-ray (EDS) analysis and X-ray diffraction (XRD) studies, which provided data about the chemical composition and crystalline structure. In addition, scanning electron microscopy (SEM) images revealed the presence of a homogeneous TiGO coating with average thickness of 5.8 µm deposited on the Al substrate. Also, the Raman analysis of the TiGO sample found D and G bands related to graphene oxide. This compound could increase the surface area of TiO2 from 73 to 113 m2/g and reducing its bandgap from 2.7 to 2.6 eV, respectively. The photocatalytic performance of Al-TiGO was evaluated in the carbendazim degradation, reaching 92% under UV light for 240 min. In this sense, the efficiency of Al-TiGO was 8.9% higher than that of TiGO after four reuse cycles. Furthermore, the scavenger tests identified OH− as the most active oxidizing species. Therefore, according to the photocatalytic properties, easy manipulation, lightness, high electron transfer, flexibility and availability of the aluminum substrate classified as recycling material, it can be stated that the Al-TiGO composite is a sustainable and innovative alternative for removing carbendazim from drinking water, which could be widely used in the agro-industrial sector.

Graphical Abstract