The supported metal/oxide systems consisting of Au and Ag metal clusters. deposited on the surface of TiO2 and MoO3 in high vacuum. have been studied by means of X-ray photoelectron spectroscopy and X-ray diffraction. The major feature for all the studied systems is the reduction of the oxide at the contact interface by the deposited metal. https://leoners.shop/product-category/twin-xl-set/