Template Regulated Water Heat Was Prepared Copper Sulfide

The template method has so unique superiority in controlling the granule's size, the appearance and the grain-size distribution, that it becomes the important way in preparation nanomaterials. Especially, the soft template method, which provides the cavity of dynamical equilibrium and the passageway's size and the shape changing with the experimental condition, becomes the preponderant way. Many kinds of appearances as well as the different phase of copper sulfide have been synthesized using the template. Copper sulfide is one kind of latent semiconductor. It has unique physics-chemical properties, for example, many kinds of nonstoichiometry, the diverse nanometer crystal appearance and structure, the complex valence and so on. As well as being used in the electro-optical device domain and the semiconductor domain's latent application, it recently becomes the spot.The copper sulfide is prepared via hydrothermal/solvothermal method with the template ofβ-CD or compound which formed byβ-CD and surfactant. The concentrations of the templates, temperature, as well as cupric salt have influences in the reaction. And we talk about the principium of the reaction. The techniques of X- radial diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) are used to characterize the copper sulfides that we have made. The obtained results were as follows:1. The appearance of wire and spheroid of sample is prepared in pure water. The template ofβ-CD does not change the phase, but the change of its density is influential to the morphology of the samples. The nucleation rate and the crystal growth is speeded up with the template ofβ-CD. The homogeneous and big spheres are prepared in the density of 0.02mmol/L ofβ-CD.2. The elevation of the temperature is propitious to nucleation and may speed up the growth of the crystals. From the X-ray diffraction result, we can see the higher temperature the more incisive of the diffraction peak. The spheroid of sample prepared in 180°C is big and even, so the crystal quality is high.3. The configuration of the crystalloid is Cu_1.8S with the template ofβ-CD or SDBS. And the compound which formed byβ-CD and SDBS doesn't effect the configuration of the crystalloid. The morphology is spheroid, wire and amorphous pellet with the compound template ofβ-CD and SDBS (1:1). The compound template has the performance ofβ-CD and SDBS. The even and dispersed spheroid is prepared at 1:2 of the material quantity ofβ-CD and SDBS. Spheroid and lots of amorphous pellet is prepared at the proportion of 1:4.The shape becomes the amorphous pellet with the complex template ofβ-CD and PAM. The polyacrylamide (PAM) or the compound template ofβ-CD and PAM does not change the crystal phase. Belt and the amorphous pellet is prepared with low concentration of PAM. And agglomerate and massive amorphous finely are prepared in high concentration of PAM, which may be the result of the flocculated nature of PAM. PAM flocculates with cupric ion and forms floccule to retard the reaction.4. The copper source plays the crucial role to the product phase. The impregnant is also influential to the sample phase, it can change the appearance of the sample. The even spheroid appearance is prepared in the solvent of N, N- dimethylformamide. The density of polyacrylamide may affect the phase and the morphology of the sample in the N, N-dimethylformamide.The innovation of the paper: The spheral copper sulfide of dispersion and even is prepared by the template of the assembly formed byβ-CD and SDBS; By changing the concentrations of the template ofβ-CD, we talk about the mechanism of the reaction; Through the change of copper source and the impregnant, we see that copper source plays crucial role to the product phase, the impregnant also has effect on the appearance and the phase of the product.