期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 6, 期 10, 页码 1930-1934出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b00706
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资金
- Materials Research Center (MRSEC) at Northwestern University
- National Science Foundation [DMR-1121262]
We analyze the possibility of strain-induced segregation in bimetallic multiply twinned particles by an analytic first-order expansion within a continuum model. The results indicate that while the change in free energy may be small, there will be a noticeable segregation of larger atoms to the external surface and smaller ones to the core, which could have interesting effects when such nanoparticles are used as heterogeneous catalysts.
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