Fig. 6From: One-Pot Green Synthesis of Ag-Decorated SnO2 Microsphere: an Efficient and Reusable Catalyst for Reduction of 4-Nitrophenol a, b Time-dependent UV–Vis absorption spectra and the plot of ln(C t /C 0) versus reaction time for the reduction of 4-NP of the sample prepared at 150 °C for 36 hBack to article page