Figure 4.

¹O₂ generation in different samples (blank, PLLA, CN/PLLA and CN-MnO₂/PLLA) under (a) 660 nm VL, (b) 808 nm NIR, (c) dual-light (660 nm VL + 808 nm NIR) irradiation. ·OH generation in different samples under (d) 660 nm VL, (e) 808 nm NIR, and (f) and dual-light irradiation. Photothermal warming curve of different samples under (g) 660 nm VL, (h) 808 nm NIR, and (i) dual-light irradiation. ¹O₂ singlet oxygen, PLLA poly-L-lactic acid, CN graphitic phase carbon nitride, MnO₂ manganese dioxide, VL visible light, NIR near-infrared, ⋅OH hydroxyl radical