Plasmon resonance of copper nanopartides within zeolites: the effect of matrix composition and agglomeration temperature

摘要

Small copper particles within zeolite (mordenite) matrix produced by copper ion reduction were studied. Variation of SiO_2/Al_2O_3 molar ratio of mordenite does not change crystal structure, but results in different ionic properties. A change of SiO_2/Al_2O_3 ratio leads to transformation of the plasmon resonance from a classical peak to a shoulder in the same wavelength range. These features were simulated by the Mie theory, and calculations outlined additional absorption bands those consistent with the experiment.