| Nanomaterials have special function compared with conventional materials because ofits special size. For example, in magnetic, optical, electrical and catalytic properties havedifferent performance compare with convention materials. The crystal periodic boundaryconditions was damaged, the density of nanoparticles near the surface layer of atoms werereduced, and the electron mean free path was very short, the locality and coherence wasenhanced, because of the physical characteristics of the nanoscale size and the wavelength oflight, the de Broglie wavelength, and the superconducting state coherence length size equal toor smaller. The number of the atoms were greatly decreased， and the macro fixedquasi-continuous energy bands was changed into discrete energy levels. These changing madethe nanomaterials have different function compared with convention materials，for examplethe quantum size effect, small size effect, surface effect and macroscopic tunnel effect.Structure, properties and applied research in nanomaterials is hot topic of materials science.But the key to application nanomaterials is how to make it. In this article, three differentinorganical nanomaterials were prepared by phanse transfer method. Three aspects had beenresearched in the work.1. Homogeneous nano-CuS was synthesized by phase-transfer method, and thepreparatory conditions were studied in detail. The synthesized nano-CuS was characterized bytransmission electron microscopy （TEM） and UV–vis absorption spectroscopy. The optimalSynthesis condition were detected, the result indicated the optimal concentration of Cu2+was2mmol·L-1, pH was7.5and the concentration of diphenylthiocarbazone was2.0mmol·L-1.The results indicated that the as-prepared nano-CuS showed a willow-like structure withaverage diameter of30-40nm. The nano-CuS Solution could be Store about one month.2. Then a novel carbon paste electrode （CPE） based on these nano-CuS was prepared,and its chemical characteristics were researched. The modified CPE based on nano-CuS wasused to detect of H2O2, and a satisfactory result was achieved. The result indicated that thenano-Cus optimal modified volume is110μL, and the volume of nafion was6μL (0.4 mmol·L-1). The modified electrode took on a good line relationship when the concentration ofH2O2was6×10-5-1.4×10-4mol·L-1.3. Ag2S nanoparticles were prepared by phase transfer method, the common metalchelating agent and in organic solvents were explored. Besided differnt experiment conditionwere detected, for example the silver ions concentration, different reaction time changeinfluence the reaction of complexometric. The nanomaterials were characterized by UV-visbsorption spectroscopy, transmission electron microscope （TEM）. The reasult indicated thatthe optism silver ions concentration for7×10-4mol·L-1, reaction time for1h, the optismdithizone concentration was1×10-3mol·L-1. And the nanomaterials have a special flourenceproperties.4. Nano-CdS nanoparticles were prepared by phase transfer method. The synthesizednano-CuS was characterized by transmission electron microscopy （TEM） and UV–visabsorption spectroscopy. The optimal Synthesis conditions were detected. The results showedthat the preparation of CdS nano-particles in the crystal rules, the particle size more uniformoverall good dispersion and high stability. Preparation of nano-CdS solution showedfluorescence characteristics. |
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