A controllable preparation method of micron-scale columnar silver sulfide arrays
A silver sulfide, micron-scale technology, applied in the direction of zinc sulfide, etc., can solve the problems of high cost, high temperature and high pressure, etc., and achieve the effects of high yield, low equipment investment and low energy consumption
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Embodiment 1
[0012] Example 1: Preparation of micron-scale columnar silver sulfide arrays
[0013] Get 1 g of silver nitrate and dissolve it in 50 g of deionized water, then drop into 3 g of styrene-based cation-exchange resin (Sinopharm Chemical Reagent Co., Ltd. (Shanghai Test) 732 cation-exchange resin, Na type) and let it stand for 12 hours, then take out the resin Repeatedly washing with deionized water until free of free ions is the silver ion-cation exchange resin precursor material. Take 3 g of sodium sulfide fully dissolved in 30 g of deionized water, then take 3 g of silver ion-cation exchange resin precursor material into it, control the temperature at 25 °C for 1 hour, take out the resin, wash it with deionized water, and prepare A micron-scale columnar silver sulfide array was obtained. figure 1 It is a field emission scanning electron microscope image of a micron-scale columnar silver sulfide array. It can be seen from the figure that the silver sulfide is columnar, with a d...
Embodiment 2
[0014] Embodiment 2: micron-scale columnar silver sulfide array
[0015] Get silver ammonia solution 50 g (mass percentage concentration of Ag is 1.27%), drop into 5 g macroporous cation exchange resin (Sinopharm Group Chemical Reagent Co., Ltd. (Shanghai Test) 732 cation exchange resin, Na type) and leave standstill for 16 hours Finally, take out the resin and wash it repeatedly with deionized water until there is no free ion, which is the silver ion-cation exchange resin precursor material. Take 5 g of sodium hydrosulfide and fully dissolve it in 50 g of deionized water, then take 5 g of silver-containing ion-cation exchange resin precursor material to put in, control the temperature at 35°C for 2 hours, take out the resin, wash it with deionized water, and then A micron-scale columnar silver sulfide array is prepared. Silver sulfide is columnar, with a diameter of about 200-300 nanometers, a height of about 3-4 microns, and an aspect ratio of about 10-20.
Embodiment 3
[0016] Embodiment 3: micron-scale columnar silver sulfide array
[0017] Get 2 g of silver nitrate and dissolve it in 60 g of deionized water, then drop into 8 g of macroporous cation exchange resin (Sinopharm Group Chemical Reagent Co., Ltd. (Shanghai Test) 732 cation exchange resin, Na type) and let it stand for 24 hours, then take out the resin Repeatedly washing with deionized water until free of free ions is the silver ion-cation exchange resin precursor material. Take 5 g of sodium thiosulfate fully dissolved in 50 g of deionized water, and then take 8 g of silver-containing ion-cation exchange resin precursor material to put in, control the temperature at 40 °C for 3 hours, take out the resin, wash it with deionized water That is, a micron-scale columnar silver sulfide array is prepared. Silver sulfide is columnar, with a diameter of about 200-300 nanometers, a height of about 3-4 microns, and an aspect ratio of about 10-20.
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