After introducing the sudei ultraviolet absorption spectrum of CVIS and the records of ZnS samples prepared, each sample was dispersed in ethanol. Figure. On the 6th day, there were two peaks in the total amount of 2 g/L of adsorbed zinc sulfide hollow spheres and Su Dai. The absorption peak of zinc sulfide was at 3 17 nm, and was quite blue-shifted by a large number of sphalerite zinc sulfide at 345 nm due to the quantum size effect. It has been proved that the size of light-absorbing zinc sulfide nanocrystals is 3.5 nm and the exciton peak is 288 nm [23]. The product absorbs a band gap of 3.93 EV at 3 17 nm, which corresponds to a zinc sulfide grain size of about 20 nm, which is a good consistency obtained from X-ray diffraction. The morphology of zinc sulfide particles in the ultraviolet CVIS spectrum, such as small balls (Figure 6B) and large area (Figure 6 C), is about 3 17 nm. This shows that the different optical properties of ZnS structure are due to the properties of 20 nm primary ZnS particles, and they are basically unchanged after they are combined into a larger structure.

In the picture. 6, there are also different absorption peaks between 2 10 and 280 nm. Su Dai with two peaks at 2 10 and 245 nm has no corresponding absorption imidazoline ring and p? * * * The yoke structure Chief Secretary for Administration-assignment group and the P electrons between the two countries are located in N atom, see letter A, and the absorption peaks in this respect appear in lines B, C and D, that is to say, first, Su Dai cannot be washed with water, and it is completely in the zinc sulfide samples prepared in advance; Secondly, zinc sulfide samples show different absorption characteristics. In this respect, lower B-line absorption may lead to lower sudei content in zinc sulfide samples, which are prepared by a system containing only 1 g/L sudei. When the content of Su Dai is increased to 2 g/L, the absorption becomes larger and the indication range is wider, even exceeding the pure Su Dai in line D, which cannot be explained by unwashed well-off. We believe that extensive absorption is the result of the existence of large cavities in the existing zinc sulfide hollow spheres, which is called hollow effect. When the concentration of sudei increased to 4 g/L, the shell became thicker, and the obtained ZnS and hollow structure were unclear. Therefore, the decrease of absorption shows that it is necessary to further study the ring length, the so-called hollow effect.