Here we report the design and preparation of an ultrastable Au nanocatalyst through a photo-deposition strategy at room temperature, in which Au nanoparticles were covered by an island-like dispersed Cr₂O₃ overlayer. The latter was induced by the excited electrons in the TiO₂ conduction band transferred to the Au nanoparticle. The resulting titania-supported Au catalyst promoted by chromia is resistant to sintering and exhibits excellent activity and stability in the low-temperature CO oxidation reaction and air atmosphere.

中文翻译：

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氧化铬覆盖的超稳定二氧化钛负载的Au纳米颗粒通过光诱导策略进行低温CO氧化

在这里，我们报告通过室温下的光沉积策略设计和制备超稳定的Au纳米催化剂，其中Au纳米颗粒被岛状分散的Cr ₂ O ₃覆盖层覆盖。后者是由转移到Au纳米粒子的TiO ₂导带中的激发电子引起的。由氧化铬促进的所得二氧化钛负载的Au催化剂耐烧结，并且在低温CO氧化反应和空气气氛中表现出优异的活性和稳定性。