Template-Based CVD Synthesis of ZnS Nanotube Arrays

Abstract

Using zinc bis(diethyldithiocarbamate) as a single-source molecular precursor, ordered ZnS nanotube arrays have been synthesized for the first time within the channels of the porous anodic alumina (PAA) membranes using CVD at 400 C. The nanotubes, with an outer diameter of about 80±150 nm and a length of up to tens of micrometers, were characterized using scanning electron microscopy (SEM), X-ray diffractometry (XRD), and transmission electron microscopy (TEM). The photoluminescence measurements of the ZnS nanotube arrays revealed two emission peaks at about 354 nm and 402 nm at room temperature, which may be ascribed to the sulfur vacancies or interstitial states in the ZnS nanotubes. The efficient templatebased CVD method can be expected to be applied in the synthesis of other metal sulfide nanotube arrays.

Formation of CuS nanotube arrays from CuCl Nanorods through a gas-solid reaction route

“…However, integrating nanotubes into organized arrays directly on substrates has remained a huge challenge since it requires not only high yielding but also simultaneous alignment of these nanostructured units. At present, template-based techniques turn out to be particularly effective for growth of nanotube arrays in spite of complicate processes involved [7][8][9]. However, the template removal process after nanotube array formation inevitably affects the purity of the materials and may also cause the partial loss of nanotube orientation [10].…”

First-principles calculation of the band structure, electronic states, and optical properties of Cr-doped ZnS double-wall nanotubes

“…Since the band structure and optical properties of ZnS can be modified by introducing special nanostructures, many research works have been conducted to synthesize ZnS nanoparticles [1,2], nanospheres [3,4], nanosheets [5,6], nanorods [6,7], nanowires [8][9][10][11] and nanotubes [12][13][14][15] and to study the properties. In particular, ZnS nanotubes are attractive and the techniques, such as, solvothermal processing, hydrothermal method, solid-vapor deposition and pulsed laser vaporization are exploited in the synthesis of ZnS nanotubes.…”

Fabrication and luminescence properties of In2O3-capped ZnS nanowires

“…Regarding ZnS one-dimensional (1D) nanostructures, a variety of techniques for the synthesis of ZnS nanowires have been reported. These techniques include thermal evaporation of ZnS powders [4], solvothermal process [5], chemical vapor deposition [6], electrochemical deposition [7], and templateassisted routes [8], etc. On the other hand, In 2 O 3 is an important n-type wide band gap (3.55-3.75 eV, depending on the synthesis method) transparent conducting oxide material.…”