Preparation method of bismuth oxycarbonate flower-like microsphere thermally synthesized by ethylene glycol-water mixed solvent
A technology of bismuth oxycarbonate flowers and mixed solvents, which is applied in the field of preparation of inorganic micro-nano materials, and achieves the effects of high product yield, simple preparation process and low cost
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[0017] Example 1
[0018] Mix 48 ml of ethylene glycol and 12 ml of deionized water uniformly to form a mixed solvent, then add 2 mmol of bismuth nitrate and 0.5 g of urea under stirring, and stir until completely dissolved. Transfer the final solution to a 100ml stainless steel reactor lined with polytetrafluoroethylene. Placed in a dry box, hydrothermally reacted at 180°C for 12 hours. Then it was naturally cooled to room temperature, and the obtained precipitate was rinsed three times with deionized water and absolute ethanol, centrifuged, and dried in a vacuum drying cabinet at 80°C for 12 hours. The flower-shaped microspheres of bismuth oxycarbonate can be obtained. The X-ray diffraction pattern of the bismuth oxycarbonate product is shown in figure 1 , The position and intensity of each diffraction peak in the figure are consistent with the standard diffraction card (JCPDS41-1488). See the scanning electron micrograph figure 2 a, see the transmission electron microscope...
Example Embodiment
[0019] Example 2
[0020] Mix 48 ml of ethylene glycol and 12 ml of deionized water uniformly to form a mixed solvent, then add 2 mmol of bismuth nitrate and 0.5 g of urea under stirring, and stir until completely dissolved. Transfer the final solution to a 100ml stainless steel reactor lined with polytetrafluoroethylene. Place in a dry box, hydrothermally react at 100°C for 12 hours. Then it was naturally cooled to room temperature, and the obtained precipitate was rinsed three times with deionized water and absolute ethanol, centrifuged, and dried in a vacuum drying cabinet at 80°C for 12 hours. The flower-shaped microspheres of bismuth oxycarbonate can be obtained. The scanning electron micrograph of the bismuth oxycarbonate product is shown in image 3 a and 3b show that the bismuth oxycarbonate products are flower-shaped microspheres.
Example Embodiment
[0021] Example 3
[0022] Mix 48 ml of ethylene glycol and 12 ml of deionized water uniformly to form a mixed solvent, then add 2 mmol of bismuth nitrate and 0.5 g of urea under stirring, and stir until completely dissolved. Transfer the final solution to a 100ml stainless steel reactor lined with polytetrafluoroethylene. Place in a dry box, hydrothermally react at 180°C for 6 hours. Then it was naturally cooled to room temperature, and the obtained precipitate was rinsed three times with deionized water and absolute ethanol, centrifuged, and dried in a vacuum drying cabinet at 80°C for 12 hours. The flower-shaped microspheres of bismuth oxycarbonate can be obtained.
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