Fabrication of High-Aspect-Ratio Prussian Blue Nanotubes Using a Porous Alumina Template

Abstract

Prussian blue nanotubes were fabricated by using a sequential deposition technique inside the 60-nm well-ordered pores of anodic alumina. By varying the deposition parameters and the dimensions of the template, we could tailor the length and the outer as well as the inner diameter of the tubes. The nanotubes were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD).

Magnetism and Photomagnetism of Prussian Blue Analogue Nanoparticles Embedded in Porous Metal Oxide Ordered Nanostructures

“…It has to be noted that this method is not appropriate for growing all PBAs in a controlled way, probably due to variable solubilities of the PBAs in the solvent used. In the case of the alumina membranes the shape of the polycrystalline nanotubes formed through a layer-by-layer approach [54,55] is comparable to that of the nanotubes formed through an electrochemical method. [65,66] Within the hexagonal porosity of ordered mesoporous SBA-15 and MCM-41 silica powders PBAs are in the shape of nanoparticles grafted to the silica walls, their size depending on the diameters of the pores: 2-3 nm for MCM-41 [57] silica and 5-7 nm for SBA-15 silica.…”

“…Uncontrolled precipitation is avoided by preventing the simultaneous presence of both free precursors in solution. This method has been used to form (i) FeFe [54] and CoFe [55] PBA nanotubes within porous alumina membranes, (ii) FeFe, NiFe, CoCo, NiCo PBA and FeMo Prussian blue derivative nanoparticles [56,57] within the hexagonal porosity of ordered mesoporous SBA-15 CoFe [55] SiO 2 powder (2D hexagonal, SBA-15) FeFe spherical nanoparticle SiO 2 [56,57] NiFe [56,57] FeMo [56,57] CoCo [57] SiO 2 powder (2D hexagonal, MCM-41) FeFe spherical nanoparticle SiO 2 [57] NiFe NiCo TiO 2 (2D hexagonal, nanoperforated film) RbCoFe nanoparticle TiO 2 wall, Au bottom [62] CoFe [63] Eur. J. Inorg.…”

Nanorice and Nanospears from Polymer Nanospheres

“…[13] Other nanorod-production techniques that do not require templates include the electrospining of nanofibers [14,15] and also the use of biomolecules and self-assembly processes. [16,17] The techniques that use membranes as templates include electrodeposition, [18] layer-by-layer deposition, [19][20][21] and methods using commercially available metal-plating solutions. [22,23] Zheng et al have fabricated copolymer nanotubes and nanowires by having polymerizing copolymers inside the pores of alumina membranes.…”

Synthesis of Cobalt-Iron Prussian Blue Analogues Nanotubes by CTAB Soft-Template Method

“…3 In recent years, there have been quite a few techniques developed for preparing such materials, for example, porous alumina, 4 stearylamine, 5 ionic liquids, 6 mesostructured silica, 7 sodium hexametaphosphate, 8 apoferritin, 9 polyvinylpyrrolidone, 10 sol-gel, 11,12,13 anodic aluminum oxide 14 and microemulsion. 15,16 Although considerable efforts have been put on the syntheses of PBAs materials, relatively few attempts 17 have been on the produce of the tubular Prussian blue analogues, let alone the cobalt-iron PBAs nanotubes.…”