Functionalization of silicon nanowire surfaces with metal-organic frameworks

Abstract

Metal-organic frameworks (MOFs) and silicon nanowires (SiNWs) have been extensively studied due to their unique properties; MOFs have high porosity and specific surface area with well-defined nanoporous structure, while SiNWs have valuable one-dimensional electronic properties. Integration of the two materials into one composite could synergistically combine the advantages of both materials and lead to new applications. We report the first example of a MOF synthesized on surface-modified SiNWs. The synthesis of polycrystalline MOF-199 (also known as HKUST-1) on SiNWs was performed at room temperature using a step-by-step (SBS) approach, and X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy elemental mapping were used to characterize the material. Matching of the SiNW surface functional groups with the MOF organic linker coordinating groups was found to be critical for the growth. Additionally, the MOF morphology can by tuned by changing the soaking time, synthesis temperature and precursor solution concentration. This SiNW/MOF hybrid structure opens new avenues for rational design of materials with novel functionalities.

M@MIL-100(Fe) (M = Au, Pd, Pt) nanocomposites fabricated by a facile photodeposition process: Efficient visible-light photocatalysts for redox reactions in water

“…However, they still suffer from some drawbacks, such as a high recombination probability of photoexcited charge carriers. To improve their photocatalytic performances, some researchers have focused their efforts on the introduction of functional entities (e.g., metal complexes, metal salts, or metal and metal oxide particles) into MOF materials [15,16].…”

Hollow Zn/Co ZIF Particles Derived from Core–Shell ZIF‐67@ZIF‐8 as Selective Catalyst for the Semi‐Hydrogenation of Acetylene

“…[1] Recently, the metal nanoparticles (NPs)@MOFs composite has shown alot of advantages as anew type of catalyst and thus became arising star. The manufacturing of hollowM OFs enables us to prepare an oble metal@MOF yolk-shell composite with controlled spatial distribution and morphology.The enhanced gas storage and porous confinement that originate from the hollow interior and coating of ZIF-8 confers this unique catalyst with superior activity and selectivity towardthe semi-hydrogenation of acetylene.…”

“…[1] Recently, the metal nanoparticles (NPs)@MOFs composite has shown alot of advantages as anew type of catalyst and thus became arising star. [1] Recently, the metal nanoparticles (NPs)@MOFs composite has shown alot of advantages as anew type of catalyst and thus became arising star.…”

Engineering 3D Ru/Graphene Aerogel Using Metal–Organic Frameworks: Capture and Highly Efficient Catalytic CO Oxidation at Room Temperature

“…Metal–organic frameworks (MOFs) combined with other materials have attracted great interest . MOFs are potential gas adsorption materials, due to their large surface area, excellent adsorption ability, and high chemical stability.…”