Alkyd resin based hydrophilic self-cleaning surface with self-refreshing behaviour as single step durable coating

Area of Science:

• Materials Science
• Nanotechnology
• Environmental Science

Background:

• Zinc oxide (ZnO) nanoparticles are known for their photocatalytic and antibacterial properties.
• Doping ZnO with silver (Ag) can enhance these properties through synergistic effects.
• Developing efficient self-cleaning and self-disinfecting materials is crucial for environmental hygiene.

Purpose of the Study:

• To synthesize and characterize silver-doped zinc oxide nanoparticles (SDZO Nps).
• To evaluate the photocatalytic degradation and antibacterial activity of SDZO Nps.
• To formulate and assess an alkyd resin-based coating incorporating SDZO Nps for self-cleaning and self-disinfecting applications.

Main Methods:

• Gel-combustion technique for synthesizing SDZO Nps.
• X-ray diffraction, FESEM, UV-Vis, and photoluminescence spectroscopy for characterization.
• UV-Vis spectroscopy to monitor crystal violet degradation.
• Formulation of alkyd resin coating and evaluation of self-cleaning, self-refreshing, and antibacterial properties against E. coli.

Main Results:

• 1% Ag-doped ZnO nanoparticles showed higher photocatalytic degradation rates, degrading 1 mg of crystal violet in 30 min under sunlight.
• The synthesized SDZO Nps exhibited significant antibacterial activity against E. coli.
• The alkyd resin coating with 1% SDZO Nps demonstrated effective self-cleaning, self-refreshing, and self-disinfectant properties.

Conclusions:

• The synergistic effect of ZnO and Ag doping creates highly efficient photocatalysts.
• Alkyd resin coatings incorporating SDZO Nps offer a promising, economical solution for self-cleaning and hygienic environments.
• The developed coating possesses durable self-cleaning and self-disinfectant functionalities.