Journal
ACS NANO
Volume 9, Issue 3, Pages 3044-3049Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn5072446
Keywords
metal-organic frameworks; nanoparticles; nanowires; host guest systems
Categories
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering [DE-SC0008055]
- U.S. Department of Energy (DOE) [DE-SC0008055] Funding Source: U.S. Department of Energy (DOE)
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With well-defined porous structures and dimensions, metal-organic frameworks (MOFs) can function as versatile templates for the growth of metallic nanostructures with precisely controlled shapes and sizes. Using MOFs as templates, metallic nanostructures can be grown without the need of bulky surfactants and thus preserve their intrinsic surface. Additionally, the high surface area of MOFs can also ensure that the surface of the template metallic nanostructures is readily accessible, which is critical for the proper function of catalysts or sensors. The hybrid metal@MOF structures have been demonstrated to exhibit useful properties not found in either component separately. Here we report the growth of ultrafine metallic nanowires inside one-dimensional MOF pores with well-controlled shape and size. Our study shows that solvent selection plays an important role in controlling precursor loading and the reduction rate inside the MOF pores for the formation of the nanowires. The growth of the well-aligned, ultrathin nanowires was monitored and characterized by transmission electron microscopy, X-ray diffraction, UV vis spectroscopy, fluorescence studies, and Brunauer Emmet Teller surface area analysis.
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