Fabrication And Characterization Of One-dimensional Semiconductor Nanomaterials

Against the background of preparation and application of nanomaterials and with the emphasis of preparing one-dimensional nanomaterials, this article reports on the latest progress in research of nanomaterials and our research achievements. The main contents are as follows.1. Porous alumina templates have been prepared using oxalic acid as electrolyte. The membrane prepared through a two-step oxidation process has regular-arranged nanopores. The channels of the template are parallel and the diameters of the nanopores are uniform, which could be altered in the range of 30-100 nm by enlarging treatment.2. Multi-walled carbon nanotubes have been fabricated in aluminum oxide templates by chemical vapor deposition, which diameter and length can be controlled. The growth properties of the carbon nanotubes array can be determined by the catalyzer, temperature in the reactor, flow ratio and deposition time.3. ZnO nanowires arrays have been fabricated in anodized aluminum oxide templates by electric field-assisted electrochemical technology. The single crystalline ZnO nanowires preferentially grow along the (101) derection .The nanowires are straight and uniform with an average diameter of 60 nm.4. Two-dimensional micrometer-sized ZnO thin nanosheets were achieved on a large scale by the hydrothermal method. Wurtzite ZnS nanowires have been successfully prepared through hydrothermal method. The single crystalline ZnS nanowires preferentially grow along the (001) direction. Room-temperature photoluminescence curves of the as-synthesized ZnS nanostructures show four peaks that were analyzed by Gaussian fitting.