Fig. 2
(a) Temperature changes of CAC NPs at varying concentrations (0, 62.5, 125, 250, 500, and 1000 µg/mL; 0.75 W/cm2). Inset: Infrared thermal images of CAC NPs dispersion. (b) Temperature change curves of CAC NPs solutions (500 µg/mL) after irradiation with 1064 nm NIR laser at different powers for 5 min. (c) Photothermic stability of CAC NPs solution (500 µg/mL) upon 1064 nm laser irradiation for five on/off cycles (0.75 W/cm2). (d) TMB was used to detect the fluorescence intensity change curve of ·OH produced by CAC NPs solution (500 µg/mL) at different time. (e) Oxygen-evolving curves of CAC NPs (500 µg/mL) in various conditions (CAC + H2O2 + Laser, CAC + H2O2, Cu + H2O + Laser, Cu + ethanol + Laser, H2O + Laser, and ethanol + Laser). (f) Absorbance spectra of DPBF treated with the CAC NPs (500 µg/mL) upon 1064 nm laser irradiation. (g) Absorbance spectra of DTNB treated with the CAC NPs (500 µg/mL). (h) The UV-Vis absorption spectra of CAC NPs (500 µg/mL) before and after different concentrations of H2O2 treatments (0-200 µM). Inset: Chemical structure and responsive mechanism of ABTS toward ABTS•+. (i) The NIR fluorescence emission at various H2O2 concentration (inset: corresponding emission intensity excited at 1064 nm as a function of different concentrations)