Fig. 1From: Eggshell Membrane-Templated MnO2 Nanoparticles: Facile Synthesis and Tetracycline Hydrochloride Decontaminationa The photos of the synthetic system at different times. b The image of ESM slice before the redox reaction. c The image of MnO2 NPs/ESM. d The absorption intensity of KMnO4 at 525 nm. e pH of the synthetic system at different timesBack to article page