Controlling the physics and chemistry of binary and ternary praseodymium and cerium oxide systems

摘要: Rare earth praseodymium and cerium oxides have attracted intense research interest in the last few decades, due to their intriguing chemical physical characteristics. An understanding of correlation between structure properties, particular surface chemistry, is urgently required for application microelectronics, catalysis, optics other fields. Such an is, however, hampered by complexity rare oxide materials experimental methods characterisation. Here, we report recent progress studying high-quality, single crystalline, films as well ternary alloys grown on Si(111) substrates. Using these well-defined systems based a systematic multi-technique science approach, corresponding such structure, morphology, bulk–surface interaction oxygen storage/release capability, are explored detail. We show that specifically crystalline stoichiometry thin can be controlled film preparation method. This work leads comprehensive properties highlights applications versatile materials. Furthermore, methanol adsorption studies performed binary films, demonstrating feasibility employing model catalytic studies. Specifically ceria systems, find considerable stability against normal environmental conditions so they considered “materials bridge” models real catalysts.