Method for preparing calcium carbonate nano wire
A nanowire and calcium carbonate technology, applied in the field of carbonate, can solve the problems of lack of toughness and insufficient strength of spherical nanomaterials, and achieve the effects of good dispersion, simple and convenient process implementation, and uniform particle size distribution
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Embodiment 1
[0013] 1. Add 2g CaCO 3 Dissolve in 100ml of 0.5mol / L acetic acid solution and stir magnetically at constant temperature at 60°C for 2 hours.
[0014] 2. Add 4 g of citric acid to the clear solution obtained above, and continue magnetic stirring at a constant temperature of 60° C. for 12 hours. During the stirring process, the clear solution gradually turns into a milky white milk-like colloid.
[0015] 3. Filter the above-mentioned milky white milk-like colloid, wash with deionized water and absolute ethanol three times, and dry at 50° C. to obtain a white powder, that is, a linear Ca-containing intermediate.
[0016] 4. Slowly raise the temperature of the intermediate to 450° C. at a heating rate of 5° C. / min, keep it warm for 2 hours, and cool naturally to obtain a white powder, that is, calcium carbonate nanowires.
Embodiment 2
[0018] 1. In 0.45mol / L acetic acid solution, add 4g of calcium carbonate and reflux at 60°C for 2 hours.
[0019] 2. Add 4 g of citric acid to the above mixed solution, and continue to reflux for 24 hours to form a flocculent liquid.
[0020] 3. Add 3 g of cetyltrimethylammonium bromide, continue to reflux for 24 hours to form an emulsion, wash 4 times with deionized water and absolute ethanol, and dry at 50°C.
[0021] 4. Heat treatment at 450° C. for 2 hours and heat preservation for 2 hours to obtain calcium carbonate nanowires.
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