Fig. 5From: One-Pot Green Synthesis of Ag-Decorated SnO2 Microsphere: an Efficient and Reusable Catalyst for Reduction of 4-NitrophenolRepresentative XPS spectra of SnO2/Ag microspheres prepared at 150 °C for 36 h. a XPS full spectra. High-resolution spectra of the elements b Ag, c Sn, and d OBack to article page