Process for preparing high-purity bismuth sulfide
A preparation process, a technology of bismuth sulfide, applied in the direction of inorganic chemistry, bismuth compounds, chemical instruments and methods, etc., can solve the problems of complex process and non-universal process, and achieve the effect of simple synthesis steps, low cost, and easy industrial production
Inactive Publication Date: 2012-09-26
HUNAN JINWANG BISMUTH
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The method is complicated, and the production conditions need to be ultrasonically treated with an ultrasonic instrument, and the process is not universal.
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[0021] Example: figure 1 Indicates the implementation process of high-purity bismuth sulfide. Take 200 g of 15% hydrochloric acid solution in the reactor, start stirring, and add 50 g of high-purity bismuth oxide until it is completely dissolved and the clear liquid is clear. Add 24.5 g of sulfurized acetamide, react at room temperature for 2 hours, then raise the temperature to 60°C, stir and keep warm for 1 hour, let stand, pour out the supernatant carefully, add deionized water, stir evenly, and let stand. Repeat washing for 6 to 8 times until the pH of the solution is about 7, then vacuum filter the material, after drying, wash the filter cake twice with 30ml deionized water, take out the filter cake, put it in a vacuum drying oven, and control the temperature to low Dry at 60°C with a vacuum of 0.08Mpa to obtain 54g of the product, with a direct yield of 98%.
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The invention relates to a process for preparing high-purity bismuth sulfide and belongs to the field of fine chemical engineering. The process comprises the following steps of: dissolving high-purity bismuth oxide with high-quality pure hydrochloric acid to prepare a bismuth sulfide solution; stirring the solution and adding thioacetamide, of which chemometry is as much as 1.01 times into the solution for reacting for 2 hours at the room temperature; raising the temperature to 60 DEG C; stirring and preserving for 1 hour; washing and filtering by adopting a deionized water decantation method; and performing vacuum drying on a filter cake at the pressure of 0.08MPa under the temperature of 60 DEG C to prepare 99.99 percent of bismuth sulfide. According to the process, the requirement on process condition is low, the process is easy to control, the steps are simple to carry out and the production cost is low.
Description
technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a preparation process of high-purity bismuth sulfide. Background technique [0002] Bismuth sulfide (Bi 2 S 3 ) As an important semiconductor material, it is widely used in photoelectric devices in the visible light band, automatic camera control illuminometers, photoconductive drums, solar cells, laser modulation cells, visible light detectors, laser window materials, infrared two-color detectors, photoluminescence, Manufacture of electroluminescent, cathodoluminescent materials. Based on the Peltier effect, bismuth sulfide has been widely used in the field of thermoelectric cooling technology. Nano-scale bismuth sulfide can not only cause blue-shift of ultraviolet-visible absorption wavelength and fluorescence emission wavelength, but also produce nonlinear optical response, enhance the redox ability of nanoparticles, and also have excellent photoelectric catalytic ...
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Inventor 李翔曹永燃吴祖祥
Owner HUNAN JINWANG BISMUTH