Nanoparticles synthesised from Caesalpinia spinosa: assessment of the antifungal effects in protective systems

Abstract Green chemistry is the preferred approach for synthesis of metal and oxide nanoparticles due to its environmental friendliness, feasibility, safety human health when compared with other chemical or physical methods. Caesalpinia spinosa a promising resource be applied in green metallic high amount polyphenols. The aim present research was obtain an antifungal coating functionalised synthesised from C. tannin aqueous solutions (silver copper) salts control biodeterioration acrylic paints bricks. NPs were characterised by UV-vis spectroscopy, transmission electron microscopy (TEM), Fourier transformed infrared spectroscopy (FTIR), scanning (SEM) energy dispersive x-ray (EDS). silver average size 12 nm obtained 500 ppm solution inhibited growth Aspergillus niger , Penicillium commune Lasiodiplodia theobromae . These strains previously isolated biodeteriorated facade. Functionalised reported first time as protective system