In situ formation of silver nanoparticles inside pore channels of ordered mesoporous silica

摘要

Ag nanoparticles have been confined inside the pore channels of MCM-41 by in situ reduction method. XRD, TEM, N_2 adsorption/desorption, and UV-vis absorption spectroscopy were used to characterize the Ag/MCM-41 composites. Ag nonclusters were mostly confined and dispersed in the channels of the mesoporous host, and their growth was clearly restrained by the channels and their size was estimated to be around 3 nm by the absorption spectrum.