Nano/micro-scale sheet bismuthyl carbonate material and preparation method thereof
A bismuth oxycarbonate, nano-micron technology, applied in the direction of nanotechnology, chemical instruments and methods, bismuth compounds, etc., can solve the problems of high cost, poor dispersibility, expensive raw materials, etc., and achieve low price, good dispersibility, and high purity high effect
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Embodiment 1
[0024] Dissolve 10.022 g of urea in 40 ml of double-distilled water, then add 2.028 g of bismuth nitrate pentahydrate, and stir until completely dissolved to obtain a mixed solution. Transfer the mixed solution to a 100 ml stainless steel autoclave lined with polytetrafluoroethylene (the pressure of the autoclave is above 3MPa, the same as in the following examples), and place the reactor in a constant temperature drying oven at a temperature of Incubate at 180°C for 4 hours. After the reaction is completed, cool the reactor to room temperature naturally, and filter the product to obtain a yellowish precipitate. After washing several times with distilled water, dry it at room temperature, and weigh it after air drying. The mass of bismuth oxycarbonate is 0.9965 g. The recovery rate of bismuth is tested according to the method of Ministry of Health standard WS3-B-1553-93 (the same in the following examples), and the recovery rate of bismuth is 91.04%.
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Embodiment 2
[0028] Dissolve 4.080 g of urea in 40 ml of double-distilled water, then add 2.038 g of bismuth nitrate pentahydrate, stir until it is completely dissolved, and transfer the mixed solution to a 100 ml stainless steel autoclave lined with polytetrafluoroethylene The reaction kettle was placed in a constant temperature drying box and kept at a temperature of 180°C for 2 hours. After the reaction was completed, the reaction kettle was naturally cooled to room temperature, and the product was suction filtered to obtain a yellowish precipitate, which was washed several times with distilled water After that, it was dried at room temperature, and after air-drying, the mass of the obtained bismuth oxycarbonate was 0.9937 g, and the recovery rate of bismuth was 91.34%. image 3 The SEM image of bismuth oxycarbonate in this example shows that the product has good dispersibility.
Embodiment 3
[0030] Dissolve 4.143 g of urea in 30 ml of double-distilled water, then add 2.069 g of bismuth nitrate pentahydrate, stir until completely dissolved, and transfer the mixed solution to a 100 ml stainless steel autoclave lined with PTFE , The reaction kettle was kept at a temperature of 140°C for 4 hours. After the reaction was completed, the reaction kettle was naturally cooled to room temperature, and the product was suction filtered to obtain a yellowish precipitate, which was washed several times with distilled water and placed at room temperature After drying, the mass of the obtained bismuth oxycarbonate after air drying is 0.9875 g, and the recovery rate of bismuth is 92.08%.
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