Synthesis And Property Studies Of Nano/Microstructured Semiconductor Materials

Nanomaterials have been the focus of current researches in both fundamental science and industrial application because of their many unusual properties and potential applications. However, semiconductor nanomaterials have potential applications in LBD, non-linear material, light-sensitive materials, and photocatalyst materials, due to their extraordinary performance. In the future, the manufacture of semiconductor will go into a nano epoch. In this paper, we summarized the investigation and development of nano/micro-semiconductor materials, and chemically synthesized ZnS, InVO₄, and BiVO₄ nano/micro-semiconductor materials using solution-based method. We have achieved the control of size and morphology during the synthesis process and studied their photocatalysis and photoluminescence properties.1. Using the solvothermal–assisted microemulsion system (cetyltrimethyammoniumbro- mide/cyclohexayl/1-pentanol/water) we have successfully synthesized monodisperse ZnS nanospheres with uniform size. The best reaction condition and the relative parameters influencing on the experiments have been discussed in details. The formation mechanism that ZnS nanocrystalls self-assemble into ZnS nanospheres has been proposed. The photocatalysis of these ZnS cnanospheres has been investigated by the degradation of p-nitrophenol under UV irradiation.2. In the presence of surfactant SDBS, mesoporous structured InVO₄ microspheres have been hydrothermally synthesized. On the basis of experiment results, the formation mechanism has been proposed and the amount of SDBS that could strongly affect the InVO₄ samples has been discussed in details. We also have studied the UV-Vis DRS, photocatalysis, and photoluminescence of the InVO₄ microspheres.3. Branched structured monoclinic BiVO₄ have been hydrothermally synthesized at different temperatures. The relationship between reaction temperatures/times and morphology/crystal-structure has been studied. By exactly controlling reaction conditions, monoclinic BiVO₄ was synthesized under the best conditions.