期刊
NANOSCALE
卷 7, 期 18, 页码 8309-8314出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr00999e
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资金
- National Research Foundation of Korea (NRF) - Korea Government (MSIP) [2013R1A2A2A01015168]
- NRF [2010-0020209, 2014R1A1A4A01007933]
- MIHWAF (Korea Health 21 RD Project) [HI10C1911]
- KBSI [T34520]
- National Research Foundation of Korea [2014R1A1A4A01007933, 2013R1A2A2A01015168] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Simultaneously growing multiple nanocrystallites in a crowded space can cause a shortage of precursors, and this can lead to a vertical growth of nanocrystallites on a given substrate. The presence of surfactant-surfactant interactions among adjacent nanocrystals can also place a unique structural constraint on the growing nanocrystallites, resulting in novel nanocrystal facet control. Herein, we report the growth of Rh on Au@Pt nanowires with multiple twinning boundaries, which are found along the entire nanowire length. The Au@Pt nanowires exhibit numerous bead-like structures, resulting from the preferred Pt deposition on the twinning boundaries, which can serve as nucleation sites for Rh. The heteroepitaxial growth of Rh on the Au@Pt nanowires results in unusual crystal growth behaviours. First, novel morphologies of Rh nanorods, nanoplates, and tangled manes are obtained temperature-dependently, which are not obtained in the absence of the Au@Pt nanowire substrate. Secondly, the thickness of vertically grown nanorods and nanoplates is tightly controlled. We also report the structure-catalytic activity relationship on the catalytic hydrogenation of phthalimides by the new Rh nanostructures.
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