Progress in the preparation and performance of Pt nanocatalysts decorated with Cu single atoms
Reviews the preparation,charaterizations and catalytic performance in the selective hydrogenation of para-chloronitrobenzene,epichlorohydrin,and phenylacetylene of the Pt nanocatalysts decorated with Cu single atoms.The Pt-Cu catalysts with electronic effect and geometric effect separately can be obtained by decorating the Pt nanop-articles with Cu single atoms in different ways.The structure and the electronic transfer between Pt and Cu of the Pt-Cu catalysts are revealed by spherical aberration transmission electron microscope(Cs-TEM),synchrotron radia-tion,and ex-situ XPS charaterizations.The experimental results reveal that the electronic effect can effectively in-hibit the dechlorination reactions in the selective hydrogenation of para-chloronitrobenzene and epichlorohydrin,and that geometric effect can help the production of styrene from phenylacetylene.In-situ FT-IR and DFT theoretical calculations are used to reveal the catalytic mechanism that Cu single atoms modify the catalytic performance of Pt nanoparticles.The results reveal that Cu single atoms alter the adsorption behaviors of the reacting molecules and reaction barriers over Pt nanoparticles,which is a solid basis for exploring the catalytic theory.
Cu single atomsPt nanoparticleselectronic effectgeometric effectcatalysis
NETL
NSTL
万方数据
维普
