Growth of Ag Nanostructures on Various Metallic Substrates

Abstract

Various kinds of Ag nanostructures were grown on various metallic substrates using hexakisphosphate (IP6) as a silver carrier agent. The Ag nanostructures with three-dimensional dendritic structure, the two-dimensional dendritic structure, the two-dimensional fractal structure, particles and nanowire structures were controllably obtained. The morphological control by IP6 using additional metallic materials is proposed. The structural properties of the Ag nanostructures were examined, and the growth evolution of the nanostructures was discussed. It is considered that the IP6 plays an important role as a silver carrier agent for the structural and morphological control of the Ag nanostructures.

Formation of Si-based nanosheets by extraction of Ca from CaSi₂ layers on Si substrates

“…3(c), the lattice fringes are constructed by so-called "1/3{422}" diffraction conditions, appeared by the elongation of {111} diffractions perpendicular to the nanosheet surface for the face centered cubic and diamond type crystals, and they are observable only for a sample that is atomically smooth and has very thin two dimensional flat sheets. 6), 21) It is also noted that the angle between two adjacent planes is not precisely 60 degrees, which is caused by the inclination of the Si(111) zoneaxis from the observation direction. As shown in Fig.…”

Syntheses and Structural Control of Silicide, Oxide and Metallic Nano-Structured Materials

“…α-Fe 2 O 3 nanowires [6], CuO/Cu 2 O axial heterostructures [7], and ZrO 2 /SiO x core/shell nanowires [8] were synthesized by the thermal oxidation of metallic substrates in air at typically 673 -1173 K. Silver nanostructures were grown on various metallic substrates using a Ag-IP6 solution. A drop of the solution was dripped on metallic substrates, then kept for the treatment time of 10 s to several min at room temperature and dried [9].…”

“…On the other hand, the following structural control is one of examples, in which the shape control is caused by the carrier agent. Figure 5 shows SEM images of a variety of Ag nano-and micro-structures grown on various kinds of metallic substrates [9]. It was found that three-and two-dimensional dendritic Ag nanostructures were formed on (a) Cu and (b) CaSi 2 substrates, respectively.…”

“…For the SrSi 2 substrates, it is considered that the reaction of IP6 with these substrates rarely takes place, thus small amounts of Ag-structures were synthesized. It is noted that the Ag-nanowires were evolutionally grown from the Ag-particle formation [9]. It was reported that the size and shape of the nanocrystals can be controlled by the reaction temperature, the type of reducer, ligand and shape directing agent, and not only nanoparticles, but also nanowires can be grown [22].…”