In this paper, we present the influence of temperature on the Kirkendall effect-related evolution of coaxial ZnO/Al 2 O 3 one-dimensional heterostructures based on a solid-state reaction. Controllable fabrication of spinel ZnAl 2 O 4 -based nanotubes and porous nanowires can step-by-step be achieved from ZnO/Al 2 O 3 core−shell nanowires with a change in the reaction temperature. In particular, we demonstrate that the formation of completely hollow nanotubes in this system is not strictly limited to a fixed stoichiometry of ZnO/Al 2 O 3 required for the spinel-forming reaction when an annealing temperature of 800 °C is employed. Combined with atomic layer deposition, the wall thickness of the formed nanotubes can be further precisely tailored and defined. Our finding provides an effective route to fabricate spinel nanotubes as well as nanotube arrays on a large scale.
No takes yet. Share an insight, caveat, or question.
Yang et al. (2008) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: