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Preparation and Characterization of Nanomaterials with Ordered Structure

Author: LiLanYing
Tutor: GuGuoHua
School: Qingdao University of Science and Technology
Course: Applied Chemistry
Keywords: ordered structure nanomaterials sulfides hollow spheres template
CLC: TB383
Type: Master's thesis
Year: 2005
Downloads: 158
Quote: 1
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Abstract


Several nanomaterials with ordered structure were prepared and characterized in this paper. It has hotspot study to prepare a great variety of nanomaterials with ordered structure assembled by nano constitutional unit structure, recently including nanothin film, nanotubes, nanowires（nanorods）, dandelions, nanoprisms, nanodisks, nanocubes , nanobox, nano-triangle and some other complex structures, such as, pactination, fashbones, brige, hollow spheres, reticulin, mult-arms nanorods.The first part of this paper is aimed to prepare several sulfides with quaternary ammonium salt of 2-undecyl-1-dithioureido-ethyl-imidazoline （SUDEI） with blocklike structures （see the formula 3） as surfactant and template. The sulfides were characterized by TEM、 SEM、 XRD、 UV-vis, respectively. It have not been reportedup to now to use SUDEI as template influence nanomaterials with ordered structure.① In the presence of SUDEI, the monodisperse face-centered cubic β -sphalerite ZnS nanocrystal aggregates with average size of about 2050 nm were synthesized through hydrothermal method.② Mono-dispersed ZnS hollow spheres with diameter of 300500 nm and the shell thickness of about 100150 nm have been synthesized by solvothermal method from ethanol solution in the presence of SUDEI. Its forming mechanism is similar to "organic-inorganic hybrid micelles" mechanism.③ Sb2S3 coralloid spheres with diameter of 23 μm have been prepared under hydrothermal conditions. It was inferred that slice was firstly formed and then assembled and embed stepwise to form spheres in the presence of SUDEI.④ PbS nanocrystal arranged planar sheet, monodisperse CdS nanoparticals, and monodispersed Bi2S3 nanorods have been prepared by a hydrothermal conditions in the presence of SUDEI.In the second part, we improved the previous work and amphiphilic polymer P（C9-DMC） was synthesized through free radical polymerization which was used as

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