期刊
NANO RESEARCH
卷 13, 期 10, 页码 2735-2740出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-020-2920-8
关键词
bimetallic nanoparticles; sulfur doped carbon; catalysis; ultrasmall; metal-support interaction
类别
资金
- National Key Research and Development Program of China [2018YFA0702001, 2019YFA0307900]
- National Natural Science Foundation of China [21671184, 11874334, 21872128]
- Youth Innovation Promotion Association CAS [2020458]
- Fundamental Research Funds for the Central Universities [WK2060190103, WK2060030030]
- Hefei National Synchrotron Radiation Laboratory [KY2060000107]
- Recruitment Program of Thousand Youth Talents
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 H-2-reduction at 700 degrees C 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.
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