Remarkably Strong Chemisorption of Nitric Oxide on Insulating Oxide Films Promoted by Hybrid Structure

Oxide‐Supported Gold Clusters and Nanoparticles in Catalysis: A Computational Chemistry Perspective

“…The thin films of oxide materials deposited on metal supports were initially designed as model structures of catalytically active bulk oxide surfaces for microscopic and spectroscopic experi- 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 ments. [101,102] Later on, however, they emerged as a new class of materials exhibiting interesting structural and chemical features, [103] with potential applications as sensors [104] or adsorption phases [105] and in electronics. [106] Particularly relevant in this contest are their applications in heterogeneous catalysis [107] The reason of their peculiar behaviour lies in the possibility of direct electron tunnelling from the metal support through the film, allowed by the sub-nanometric film's thickness.…”

Bonding Properties of Isolated Metal Atoms on Two-Dimensional Oxides

“…1−4 However, metal-supported oxide twodimensional films soon emerged as a new, interesting class of materials, whose properties depend on the low dimensionality of the film, as well as the interplay with the metal substrate. 5 This led to various applications of these films, for instance, as sensors, 6 as adsorbants, 7 or in electronics. 8 A very interesting field where this type of films can be applied is heterogeneous catalysis.…”

“…Thin and ultrathin oxide films were first grown on metal supports with the aim to enable the study of the surface morphology with high-resolution electron microscopy techniques, whose usage on insulating bulk oxides is prevented by the large band gap. − However, metal-supported oxide two-dimensional films soon emerged as a new, interesting class of materials, whose properties depend on the low dimensionality of the film, as well as the interplay with the metal substrate . This led to various applications of these films, for instance, as sensors, as adsorbants, or in electronics …”

Hydrogen Adsorption on Free-Standing and Ag–Pt Supported TiO2 Thin Films

“…When a thin film is grown on a metallic support, its electronic structure can be influenced by charge transfer phenomena at the interface . This, on the one hand, permits a detailed description of the film surface by means of electronic microscopic techniques − but, on the other hand, opens an intriguing possibility to tune the adsorptive and catalytic properties of a surface by means of the interplay with the support. , Several cases of activation of adsorbed species by means of charge tunnelling through an oxide thin film have been reported in the literature. − Moreover, a supported thin film displays an extended metal–oxide interface, which is often a key-factor in determining the chemical properties of a material . Indeed, a whole class of heterogeneous catalysts, the so-called inversed catalysts, consist precisely of a metal surface coated by a thin oxide layer, as recently proven in the case of ZnO-based catalysts for methanol synthesis .…”