One‐Step Synthesis of Antibacterial Coatings by Plasma Electrolytic Oxidation of Aluminum
Source abstract
Abstract
Aluminum oxide films containing small quantities of silver are produced by plasma electrolytic oxidation of aluminum (97%) in different electrolytes aiming the synthesis of bactericidal coatings over aluminum for food packaging applications. Sodium citrate, citric acid, and sodium silicate, containing Ag nanoparticles (Ag‐NPs) or Ag+ ions (AgNO3) are tested as electrolyte. The galvanostatic anodization curves are used as diagnostic to evaluate the production of Ag‐alumina coatings in a one‐step procedure. Citric acid and silicate media provide more stability and reproducibility in coatings production; however, only coatings produced in silicate solution exhibit antimicrobial effect against Bacillus subtilis bacteria. The oxide films are characterized by scanning electron microscopy (SEM) and energy dispersive X‐ray spectroscopy (EDS). An irregular porous structure and a silver content of 0.1–1.9 wt.% in the oxide coatings are observed.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Anodic Oxide Films and Nanostructures · Nanoparticles: synthesis and applications · Electrophoretic Deposition in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, Chemistry and Mathematics Federal University of São Carlos (UFSCar) Via João Leme dos Santos Km 110 18052‐780 Sorocaba Brazil
Department of Chemistry Federal University of Technology − Paraná (UTFPR) Via do Conhecimento Km 1 85503‐390 Pato Branco Brazil
Laboratory of Technological Plasmas Sao Paulo State University (UNESP) Av. Três de Março, 511 18087‐180 Sorocaba Brazil
Funding
FAPESP · CNPq · CAPES
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