Fig. 2
From: Responsive manganese-based nanoplatform amplifying cGAS-STING activation for immunotherapy
Synthesis and characterization of MPCZ NPs. TEM images of (A) SiO2 and (B) hMnO2. The insert of (B) is TEM image of MPCZ NPs. (C) SEM image of hMnO2. FTIR spectrum (D) and XRD patterns (E) of MPCZ NPs (NH4HCO3 crystals have an orthorhombic structure (PDF No.09-0415)). (F) N2 adsorption/desorption isotherms of hMnO2. (G) UV–vis spectroscopy calibration curve for measuring ZPP loading efficiency. (H) XPS spectra of Mn 2p region of hMnO2. (I) Zeta potentials of SiO2, hMnO2 and MPCZ NPs during the preparation process