Superhydrophobic Nanocoatings on Galvanized Steel and Aluminum: Enhancing Oil & Gas Sustainability

Superhydrophobic surfaces offer innovative solutions, particularly in water/oil separation systems, as they repel water and attract oil, enabling efficient separation. The study aimed to analyze coatings developed on galvanized steel and aluminum, regarding their wettability in saline water and dies...

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Published inMaterials research (São Carlos, São Paulo, Brazil) Vol. 27; no. suppl 1
Main Authors Malta, Maria Isabel Collasius, Silva, Hugo Antonio Cavalcanti e, Oliveira Neto, Paulo Roberto Sá de, Silva, Rafael Gleymir Casanova da, Silva Filho, Walter Leandro Cordeiro da, Silva, Jedaías Januário da, Urtiga Filho, Severino Leopoldino, Vieira, Magda Rosângela Santos
Format Journal Article
LanguageEnglish
Portuguese
Published ABM, ABC, ABPol 01.01.2024
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects
ENGINEERING, CHEMICAL
LDH films
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
Nanocoatings
Superhydrophobicity
Superoleophilicity
Water/oil Separation
Nanocoatings
LDH films
Superoleophilicity
Superhydrophobicity
Water/oil Separation
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Summary:Superhydrophobic surfaces offer innovative solutions, particularly in water/oil separation systems, as they repel water and attract oil, enabling efficient separation. The study aimed to analyze coatings developed on galvanized steel and aluminum, regarding their wettability in saline water and diesel oil, aiming for applications in the oil and gas industry. Specimens underwent texturizing, in-situ growth of layered double hydroxide (ZnAl-LDH) film and modification with stearic acid (STA). Both LDH films exhibited similar binary hierarchical structures of hexagonal petals and micrometric flowers, interconnecting along the surface, forming pores that allowed for air entrapment after STA modification. CA for saline water exceeded 150º, and for diesel oil was under 10º, characterizing the coatings as superhydrophobic and superoleophilic. The coatings show promising potential for water/oil separation using recyclable substrates and a simple, low-cost, environmentally friendly process.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2024-0075