Effect of carbon quantum dots on the anticorrosive action of the tin coatings
Carbon quantum dots or carbon dots (CDs) are a new class of nanomaterials with a nearly spherical shape and a size smaller than 10 nm. The literature reports on studying metallic composites using other carbon allotropes, such as carbon nanotubes and graphene oxide. However, no studies have applied c...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029776 |
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| author | Taiane Fíngolo Duarte Victor Magno Paiva Braulio Soares Archanjo Clara Muniz da Silva de Almeida Natasha Midori Suguihiro Rodrigo José Corrêa Emerson Schwingel Ribeiro Eliane D'Elia |
| author_facet | Taiane Fíngolo Duarte Victor Magno Paiva Braulio Soares Archanjo Clara Muniz da Silva de Almeida Natasha Midori Suguihiro Rodrigo José Corrêa Emerson Schwingel Ribeiro Eliane D'Elia |
| author_sort | Taiane Fíngolo Duarte |
| collection | DOAJ |
| description | Carbon quantum dots or carbon dots (CDs) are a new class of nanomaterials with a nearly spherical shape and a size smaller than 10 nm. The literature reports on studying metallic composites using other carbon allotropes, such as carbon nanotubes and graphene oxide. However, no studies have applied carbon quantum dots to metallic coatings. Tin is a metal widely used industrially due to its resistance to oxidation, corrosion resistance, and weldability. However, the thickness and microstructure of the material can impact its resistance. Therefore, this work studied composite coatings of tin (Sn) and CDs at different concentrations to improve the material's corrosion resistance. Different concentrations of CDs were analyzed to obtain Sn – CD composite coatings: 0.03, 0,04, 0.05, 0.07, and 0.09 g L−1. Mild steel plates were used as substrate using electrodeposition in galvanostatic mode with j = 6.25 mA cm−2. The performance of the coatings was evaluated by electrochemical measurements such as open circuit potential, electrochemical impedance, and potentiodynamic polarization curve. In addition, characterizations of the CDs and composite films were carried out by Fourier Transform Infrared Spectroscopy (FTIR), Zeta Potential (ζ), Dynamic Light Scattering (DLS), UV-VIS Spectroscopy, Fluorimetry, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM) and Excited Photoelectron Spectroscopy X-Ray (XPS). The electrochemical tests show an optimal working concentration equivalent to 0.05 g L−1 of CDs in the bath. The SEM and XDR show that this concentration favored the growth of the film in a more uniform manner, providing a more homogeneous barrier when compared to the pure Sn film. The XPS indicated that the pure Sn film oxidized more than the composite film, suggesting that the addition of CDs improved the resistance of this material. |
| format | Article |
| id | doaj-art-4f4c50ccb9ed4f6091b8f3be8ac003ee |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-4f4c50ccb9ed4f6091b8f3be8ac003ee2025-01-19T06:25:43ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013424772490Effect of carbon quantum dots on the anticorrosive action of the tin coatingsTaiane Fíngolo Duarte0Victor Magno Paiva1Braulio Soares Archanjo2Clara Muniz da Silva de Almeida3Natasha Midori Suguihiro4Rodrigo José Corrêa5Emerson Schwingel Ribeiro6Eliane D'Elia7Institute of Chemistry, Federal University of Rio de Janeiro, CEP 21941-909, Rio de Janeiro, RJ, Brazil; Corresponding author.Institute of Chemistry, Federal University of Rio de Janeiro, CEP 21941-909, Rio de Janeiro, RJ, BrazilNational Institute of Metrology, Quality and Technology–INMETRO, CEP 25250-020, Duque de Caxias, RJ, BrazilNational Institute of Metrology, Quality and Technology–INMETRO, CEP 25250-020, Duque de Caxias, RJ, BrazilUniversidade Federal do Rio de Janeiro, Campus UFRJ Duque de Caxias Prof. Geraldo Cidade, Duque de Caxias, RJ, BrazilInstitute of Chemistry, Federal University of Rio de Janeiro, CEP 21941-909, Rio de Janeiro, RJ, BrazilInstitute of Chemistry, Federal University of Rio de Janeiro, CEP 21941-909, Rio de Janeiro, RJ, BrazilInstitute of Chemistry, Federal University of Rio de Janeiro, CEP 21941-909, Rio de Janeiro, RJ, Brazil; Corresponding author.Carbon quantum dots or carbon dots (CDs) are a new class of nanomaterials with a nearly spherical shape and a size smaller than 10 nm. The literature reports on studying metallic composites using other carbon allotropes, such as carbon nanotubes and graphene oxide. However, no studies have applied carbon quantum dots to metallic coatings. Tin is a metal widely used industrially due to its resistance to oxidation, corrosion resistance, and weldability. However, the thickness and microstructure of the material can impact its resistance. Therefore, this work studied composite coatings of tin (Sn) and CDs at different concentrations to improve the material's corrosion resistance. Different concentrations of CDs were analyzed to obtain Sn – CD composite coatings: 0.03, 0,04, 0.05, 0.07, and 0.09 g L−1. Mild steel plates were used as substrate using electrodeposition in galvanostatic mode with j = 6.25 mA cm−2. The performance of the coatings was evaluated by electrochemical measurements such as open circuit potential, electrochemical impedance, and potentiodynamic polarization curve. In addition, characterizations of the CDs and composite films were carried out by Fourier Transform Infrared Spectroscopy (FTIR), Zeta Potential (ζ), Dynamic Light Scattering (DLS), UV-VIS Spectroscopy, Fluorimetry, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM) and Excited Photoelectron Spectroscopy X-Ray (XPS). The electrochemical tests show an optimal working concentration equivalent to 0.05 g L−1 of CDs in the bath. The SEM and XDR show that this concentration favored the growth of the film in a more uniform manner, providing a more homogeneous barrier when compared to the pure Sn film. The XPS indicated that the pure Sn film oxidized more than the composite film, suggesting that the addition of CDs improved the resistance of this material.http://www.sciencedirect.com/science/article/pii/S2238785424029776Carbon quantum dotsAnticorrosive coatingsComposites coatingsTinCorrosion |
| spellingShingle | Taiane Fíngolo Duarte Victor Magno Paiva Braulio Soares Archanjo Clara Muniz da Silva de Almeida Natasha Midori Suguihiro Rodrigo José Corrêa Emerson Schwingel Ribeiro Eliane D'Elia Effect of carbon quantum dots on the anticorrosive action of the tin coatings Journal of Materials Research and Technology Carbon quantum dots Anticorrosive coatings Composites coatings Tin Corrosion |
| title | Effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| title_full | Effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| title_fullStr | Effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| title_full_unstemmed | Effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| title_short | Effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| title_sort | effect of carbon quantum dots on the anticorrosive action of the tin coatings |
| topic | Carbon quantum dots Anticorrosive coatings Composites coatings Tin Corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029776 |
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