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Development of sustainable superhydrophobic coatings on aluminum substrate using magnesium nanoparticles for enhanced catalytic activity, self-cleaning, and corrosion resistance

Hassan, Noor ; Fadhali, Mohammed M. ; Al-Sulaimi, Sulaiman ; Al-Buriahi, M.S. ; Katubi, Khadijah Mohammedsaleh ; Alrowaili, Z.A. ; Khan, Maroof Ahmad ; Shoukat, Rizwan ; Ajmal, Zeeshan ; Abbas, Faheem ; Humma, Zil E ; Kalsoom, Umm E ; Rasool, Raqiqa Tur

Journal of molecular liquids, 2023-08, Vol.383, p.122085, Article 122085 [Peer Reviewed Journal]

Elsevier B.V

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  • Title:
    Development of sustainable superhydrophobic coatings on aluminum substrate using magnesium nanoparticles for enhanced catalytic activity, self-cleaning, and corrosion resistance
  • Author: Hassan, Noor ; Fadhali, Mohammed M. ; Al-Sulaimi, Sulaiman ; Al-Buriahi, M.S. ; Katubi, Khadijah Mohammedsaleh ; Alrowaili, Z.A. ; Khan, Maroof Ahmad ; Shoukat, Rizwan ; Ajmal, Zeeshan ; Abbas, Faheem ; Humma, Zil E ; Kalsoom, Umm E ; Rasool, Raqiqa Tur
  • Subjects: Catalytic activity ; Mg nanoparticle ; Organic pollutants ; Self-cleaning ; Superhydrophobic surfaces
  • Is Part Of: Journal of molecular liquids, 2023-08, Vol.383, p.122085, Article 122085
  • Description: [Display omitted] •Mg/MgO-Al/Al2O3 SHS have been fabricated on the Al substrate via immersion and annealing.•Annealing treatment is important for the combination between substrate and coatings.•SHS exhibits exquisite anti-corrosion, excellent self-cleaning effect, and anti-icing properties.•The Mg-SHS shows superior catalytic activity and can recover its superhydrophobicity via annealing after catalytic. This study focuses on the development of sustainable superhydrophobic surfaces (SHSs) using magnesium nanoparticles (Mg-NPs) for catalytic applications and achieved excellent SHSs on the aluminum substrate along with a high static water contact angle of 160° and a low sliding angle of 2° via etching, immersion, and annealing method. The changes in surface chemistry, structural composition, and surface morphology were examined by using various characterization techniques, such as X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Herein, we describe the creation of Mg-NPs @SHS which is facile, eco-friendly, mechanically stable and fluorine-free, along with surface robustness as compared to other SHP coatings present in the literature whose surface textures become fragile and poor wear-resistance due to direct/indirect involvement of toxic chemicals such as fluorocarbons along with complicated preparation processes and costly processing procedures. It showed a low value of Ecorr (−0.425 V) and a high value of Icorr (2.016 × 10−5 A cm−2) than a non-coated Al plate of Ecorr is (−0.801 V) and Icorr (4.998 × 10−3 A cm−2). It has also remarkable self-cleaning, super buoyancy, anti-icing property, and excellent catalytic reduction of 4-NP to 4-AP with efficiency of 99.82% in the 1st and 84% in 13th cycle. These findings suggest that Mg-NPs @SHS on the aluminum substrate have promising applications in sustainable environmental practices and provide valuable insights for the fabrication of superhydrophobic surfaces on different materials. This work offers a new avenue for the development of high-performance catalysts with reusability and durability composed of magnesium particles.
  • Publisher: Elsevier B.V
  • Language: English
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