The attached link contains article by G. Anguraj and Ea tal. In this article you can see the X-ray diffraction pattern of pure MnO2 and the nanocomposite of MnO2 doped with Ag nanoparticles in Figure1 and the FTIR spectrum of pure MnO2 and the nanocomposite of MnO2 doped with Ag nanoparticles in Figure 4. Pease remember the comparison between the pure MnO2 and its composite with Ag nanoparticles is very tight.