The catalytic performances of catalysts are greatly depended on their microstrucutres, such as the size, the dimension, the morphology and the surface of the catalyst. By controlling the microstructures of the catalytic materials, the active sites and the surface interface properties of the catalysts can be effectively controlled in the micro and meso-scale, and then, the reaction and absorption and diffusion process of reactants on the catalyst surface can be well controlled to obtained high performance catalysts. Small molecules, such as CO and H2, which have strong interactions with certain catalytic materials, becomes a powerful small molecules directed synthetic strategy to obtain catalytic materials with well designed morphology and structure.[1] Recently, our group applied the strongly selective adsorption of CO molecules on CeO2 (100) and (111) crystal planes to controlled synthesize CeO2 nanocubes covered with six (100) crystal planes.[2] Series of Ni and Co branched nanomaterials with high surface energy were successfully synthesized by introducing H2 molecules into the synthetic systems. Our studies also show that the adsorption of small molecules on the surface of the catalyst can lead to the formation of catalytic materials with highly active surface and more active sites, so as to improve the catalytic performance of the catalyst. Our studies aim to point out the general rules underlying in the adsorption, reaction and diffusion process of the reactant molecules in both the growth stages of catalytic materials and the catalytic reaction stages, and then provides guidance for the preparation of high performance catalytic materials to develop a new generation of industrial catalyst. Key words: Small Molecule Directed Synthesis, Micro and Meso-scale, Surface Interfacial Behavior, Catalytic Materials. References [1] Y. H. He, X. Liang, B. H. Chen, Globin-like mesoporous CeO2: A CO-assisted synthesis based on carbonate hydroxide precursors and its applications in low temperature CO oxidation. Nano Research, 2015, 8: 1269-1278. [2] Y. H. He, X. Liang, B. H. Chen, Surface selective growth of ceria naocrystals by CO absorption, Chem. Comm., 2013, 49: 9000-9002.

Small molecules directed synthesis of catalytic materials: The surface interfaces and structure regulation

251st National Meeting (2016)

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