Morphology-Tuned Growth of α-MnSe One-Dimensional Nanostructures

Abstract

MnSe one-dimensional nanostructures were synthesized by chemical vapor deposition and their morphology was tuned from nanowires to MnSe/silica core/shell nanocables and "peapods," as well as nanocube-chain networks by adjusting the growth conditions. All of these MnSe nanocrystals had a single-crystalline rocksalt R-MnSe structure, grown typically with the [100] growth direction. The MnSe nanoparticles (diameter ) 40 nm) were encapsulated into the amorphous silica nanowires, forming a "peapod" structure. The MnSe nanocubes (100-200 nm) were linked in chains along their [100] and [110] directions, forming a unique network structure. We propose a growth mechanism in which the competition between the growth rates of MnSe and silica results in the formation of these different morphologies.

Selective Synthesis of Peapodlike Ni/Ni3S2 Nanochains and Nickel Sulfide Hollow Chains and Their Magnetic Properties

“…To date, nickel sulfides with various nano­structures have been fabricated by different routes, including urchinlike structures by a solvothermal method, hollow spheres using a γ ‐irradiation route, and hollow chains by a wet chemical method 5–7. It is well known that many peapod nanostructures have been prepared by introducing exotic particles as cores at over 700 °C,8–10 but there are rare reports on peapodlike sulfides. Although the formation of hollow cobalt sulfide has been studied systematically,11 similar work for nickel sulfide remains a focused point of study.…”

The fabrication of photosensitive self-assembly Au nanoparticles embedded in silica nanofibers by electrospinning

“…To date, synthetic approaches for the construction of metalinsulator 'peapod' nanostructures have focused on methods such as pulsed laser deposition [14,15], ion-beam sputtering deposition [16] and chemical vapor deposition [17]. However, most of these methods are usually troublesome and high-cost.…”

Hydrothermal synthesis of cubic MnSe2 and octahedral α-MnSe microcrystals

“…It is well known that the phases and morphologies of inorganic materials have influence on their chemical and physical properties; therefore a number of groups have studied on the synthesis of manganese selenides with controllable phase and morphology via a range of methods [7][8][9], among which hydrothermal/ solvothermal method has attracted much attention [10][11][12][13]. For instance, Peng et al have reported that cubic MnSe 2 and spherical a-MnSe uniform microcrystals could be synthesized via the hydrothermal synthesis technique.…”

“…1b)[7,18].The phase compositions of the as-prepared MnSe 2 and a-MnSe microcrystals are investigated by X-ray diffraction analysis. As shown inFig.…”