“…3,4 Recently, nanomaterial-based photothermal therapy (PTT) has attracted enormous interest in antibacterial applications, mainly due to its easy operation, high antibacterial efficiency and slim chance of inducing bacterial resistance. 5,6 The photothermal effect-induced heat elevation can effectively kill bacteria by ways of breaking the bacterial membrane, denaturing the enzyme activity, causing severe oxidative stress, damaging bacterial DNA, etc. 7 Currently, many types of nanomaterial-based photothermal reagents have been developed for photothermal therapy, including organic dye (i.e., indocyanine green, polypyrrole, melanin)-based assemblies, 8 gold (Au) nanostructures, [9][10][11] carbon-based materials, molybdenum-based materials, 12 and two-dimensional materials (graphene, MXenes, black phosphorus nanosheets, etc.).…”