| Abstract
| - Nanosized zeolites are used as host matrix for the stabilization of copper clusters (Cu0 or/and CuI) by γ radiolytic reduction of Cu-containing FAU and LTL zeolites; the formation process was followed by UV−vis spectroscopy during the entire irradiation process.
- Nanosized zeolites stabilized in water suspensions are used as host matrix for the stabilization of copperclusters. The metal clusters are formed by γ radiolytic reduction of copper-containing large pore zeoliteswith FAU- (three-dimensional channels) and LTL- (one-dimensional channels) type structures in colloidalform. A selective stabilization of different metal species in the zeolite host matrix is demonstrateddepending on the irradiation conditions, type of framework architecture, and copper content in the zeolite.The formation process of different species, that is, Cu0 or/and CuI, within FAU and LTL zeolites wasfollowed by UV−vis spectroscopy during the entire irradiation process. The transparency of the irradiatedcolloidal zeolite suspensions allows the absorption measurements to be carried out with low scatteringfrom the zeolite particles having a size of about 50 nm. The use of nanosized crystals stabilized in watersuspensions led to the formation of homogeneously distributed copper species all over the zeolite particlesand not only on their surface.
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