کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1496930 992979 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coalescence of palladium nanoparticles assembled on carbon and SiC surfaces: STM and STS studies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Coalescence of palladium nanoparticles assembled on carbon and SiC surfaces: STM and STS studies
چکیده انگلیسی
Pd nanoparticles assembled on carbon and carbon-terminated SiC substrates were prepared by reducing palladium ions in one step chemical reduction technique. Morphology, size distribution and coalescence of the nanoparticles were studied by scanning tunneling microscopy (STM). Smaller nanoparticles and higher coalescence events were observed for carbon substrates. The formation of Pd(1 1 1) terraces by coalescence of the nanoparticles was observed. Atomic diffusion induced by ambient exposure is proposed to explain the coalescence of the nanoparticles at the step edges of the Pd(1 1 1). Scanning tunneling spectroscopy (STS) results revealed the metallic contact between the nanoparticles and the absence of a tick non-metallic layer of residual impurities on the nanoparticle surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 29, Issue 1, October 2006, Pages 144-149
نویسندگان
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