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The discovery and design of highly selective,active and stable catalysts is of vital importance in many applications such as the large-scale production of bulk chemicals,environmental protection,and the generation/distribution of sustainable energy.2)In the first part of this talk,Ill discuss our recent projects on the design of mesoporous and metal nanoparticle catalysts oriented toward the high-yielding alcohol-to-aldehyde transformation and total oxidation for VOCs control using molecular oxygen as the oxidant.In parallel,some new methods have been proposed to simultaneously solve sintering and coking problem of metal nanoparticles,which is one of biggest challenges to their long-term activities.2)In the second part,we mainly introduce a new methodology for the discovery of new catalysts using ink-jet printing technology.A general and simple formulation of inorganic inks based on a colloidal,monodispersed in size,nanoparticle system is used for IJP syntheses that enable rapid access to large catalyst libraries(~1,000,000 formulations/hour)with up to eight-components and variable compositions.In addition,a group testing strategy is used to reduce the number of tests 16000-fold over exhaustive one-by-one searching.This printer approach is extremely efficient,and can help accelerate the identification of optimal catalysts.