We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
D-Cysteine Functionalized Superhydrophobic Nanocomposite Coating with Multiple-Action Antibacterial Property and Enhanced Mechanical Durability
Summary
A durable superhydrophobic antibacterial coating was developed using bisphenol A diglycidyl ether, hydrophobic silica nanoparticles, and silver nanoparticles functionalized with D-cysteine. The coating resisted both bacterial adhesion and water wetting while maintaining mechanical durability. Such coatings have potential applications in marine infrastructure and medical devices where both water resistance and antibacterial properties are needed.
In this study, a durable superhydrophobic antibacterial coating was developed by a facile spraying method. A mixture of bisphenol A diglycidyl ether (BADGE) and hydrophobic SiO2 nanoparticles was sprayed on carbon steel to provide a superhydrophobic substrate. D-cysteine (D-cys) functionalized SiO2/dopamine/silver nanoparticles with multilayer core-shell structure were then sprayed on superhydrophobic substrate to enhance antibacterial performance. The results of morphology observation and X-ray photoelectron spectroscopy (XPS) indicated the successful preparation of antibacterial nanoparticles and presented the hierarchical micro/nanostructures of coating surface. The as-prepared coating exhibited superhydrophobicity, with the water contact angle of ~153°. The coating was endowed with good mechanical durability, which maintained the water contact angle of ~150° after 180 cycles in tape-peel tests. The results of electrochemical impedance spectroscopy showed satisfactory corrosion resistance of this coating during 3 days of immersion in 3.5% NaCl solution. Furthermore, the coating showed excellent antibacterial performances against Escherichia coli and Pseudomonas aeruginosa, which benefited from the synergistic actions of low wettability of superhydrophobic surface, bactericidal behavior of Ag nanoparticles, and biofilm inhibition effect of D-cys.
Sign in to start a discussion.
More Papers Like This
Mechanically durable anti-bacteria non-fluorinated superhydrophobic sponge for highly efficient and fast microplastic and oil removal
A superhydrophobic sponge was engineered to selectively remove microplastics and oil from water, achieving high removal efficiency while also demonstrating antibacterial properties. The material maintained its performance across repeated use cycles, offering a promising approach for practical water treatment applications.
Nano- and Micro-SiO2 With Integrated Green Chemistry-Based Superhydrophobic Coating for Robust Antifouling and Anticorrosion Properties
Researchers developed a solvent-free, recyclable superhydrophobic coating using micro- and nano-sized silica particles, achieving water contact angles above 170 degrees. By avoiding fluorinated compounds and synthetic polymers commonly used in coatings, this approach could reduce microplastic and chemical pollution while still providing strong antifouling and anticorrosion protection for surfaces.
AgNP Composite Silicone-Based Polymer Self-Healing Antifouling Coatings
This study developed silver nanoparticle composite silicone-based polymer coatings with both self-healing and antifouling properties, demonstrating that the combination of AgNPs and silicone matrix provides durable fouling resistance and mechanical recovery.
Mechanically robust superhydrophobic coatings for efficiency and recyclable microplastic removal
Researchers developed a durable superhydrophobic (extremely water-repelling) coating for stainless steel by electrodepositing a combination of molybdenum disulfide, zinc oxide, and lauric acid onto the metal surface in a single step. The coating maintained its water-repelling properties across a wide pH range and resisted physical abrasion from sandpaper, sand impact, and mud — common conditions in environmental use. In microplastic removal tests, the coating efficiently captured plastic particles from water and could be reused multiple times. This approach offers a low-cost, chemically stable material for continuous microplastic filtration in water treatment applications.
Synthesis and Characterization of Superhydrophobic Epoxy Resin Coating with SiO2@CuO/HDTMS for Enhanced Self-Cleaning, Photocatalytic, and Corrosion-Resistant Properties
Researchers developed a superhydrophobic epoxy resin coating incorporating silica and copper oxide nanoparticles for corrosion protection of aluminum alloys. The coating demonstrated enhanced self-cleaning properties through both physical water repellency and photocatalytic degradation of organic pollutants, offering a durable and eco-friendly approach to reducing microplastic-generating surface degradation.