Designing Ultrathin Ag-embedded G-C3n4 Nanocomposites for Enhanced Disinfection Performance under Visible Light

•The ultrathin AgCNSs were fabricated by bubble template with a hydrothermal strategy.•The two-dimensional layered AgCNSs inherited triazine groups of the prinstine g-C3N4.•The AgCNS-5 possesses excellent visible-light-driven antibacterial performance.•The MIC of AgCNS-5 against Escherichia coli was as low as 40 ppm.•The enhanced bactericidal effect was attributed to SPR of Ag NPs to g-C3N4.