摘要
Small-sized bimetallic nanoparticles that possess numerous accessible metal sites and optimal geometric/electronic structures show great promise for advanced synergetic catalysis but remain synthetic challenge so far.Here,an universial synthetic method is developed for building a library of bimetallic nanoparticles on mesoporous sulfur-doped carbon supports,consisting of 24 combinations of 3 noble metals(that is,Pt,Rh,Ir)and 7 other metals,with average particle sizes ranging from 0.7 to 1.4 nm.The synthetic strategy is based on the strong metal-support interaction arising from the metal-sulfur bonding,which suppresses the metal aggregation during the H2-reduction at 700℃ and ensure the formation of small-sized and alloyed bimetallic nanoparticles.The enhanced catalytic properties of the ultrasmall bimetallic nanoparticles are demonstrated in the dehydrogenation of propane at high temperature and oxidative dehydrogenations of N-heterocycles.
基金
the National Key Research and Development Program of China(Nos.2018YFA0702001 and 2019YFA0307900)
the National Natural Science Foundation of China(NoG.21671181,11871331,and 21872128)
Youth Innovation Promotion Association CAS(No.2020458)
the Fundamental Research Funds for the Central Universities(Nos.WK2060190103 and WK2060030030)
the Joint Funds from Hefei National Synchrotron Radiation Laboratory(No.KY2060000107)
and the Recruitment Program of Thousand Youth Talents.
