Photocatalytic graphitic carbon nitride-chitosan composites for pathogenic biofilm control under visible light irradiation

Photocatalysis holds promise for inactivating environmental pathogens. Visible-light-responsive composites of carbon-doped graphitic carbon nitride and chitosan with high reactivity processability were fabricated, they can control pathogenic biofilms environmental, food, biomedical, building applications. The broad-spectrum biofilm inhibition eradication the photocatalytic against Staphylococcus epidermidis, Pseudomonas aeruginosa PAO1, Escherichia coli O157: H7 under visible light irradiation demonstrated. Extracellular polymeric substances in most resistant to oxidation, which led reduced performance removal. 1O2 produced by was believed dominate inactivation. Moreover, exhibited excellent inhibiting development urine, highlighting developed from multiple bacterial species. Our study provides fundamental insights into new composites, elucidates mechanism how photocatalyst reacts a microbiological system.