Fig. 2

A Photographs of solutions and time dependent absorbance spectral change of aqueous solution of MB catalyzed by 20 mg FeS-Dox@bLf NZs adding to H₂O₂ (9 mM)/NaHCO₃ (25 mM) solution under light irradiation (tungsten) for 180 min. B Levels of Fe⁺ released from FeS-Dox@bLf in PBS buffer of pH 6.5 and 7.2. C Levels of H₂S gas released from FeS-Dox@bLf NZs at HEPES buffer of pH 6.5 and 7.2