NIR-II photo-amplified peroxidase-like activity using biocatalytic copper-based nanoplatform against subcutaneous methicillin-resistant Staphylococcus aureus infection

•Hexagonal CuS nanosheets were prepared via a modified one-pot method.•CuS nanosheets possess excellent photothermal properties and peroxidase activity.•CuS nanosheets could significantly kill bacteria and eradicate biofilm in vitro.•CuS nanosheets promoted wound healing via photothermal synergistic peroxidase.