Nanocarbon-iodine calcium alginate microspheres and preparation method and application thereof

A preparation method of a nanocarbon-iodine calcium alginate microsphere, comprising:

• (1) preparing an iodine-containing sodium alginate aqueous solution;
• (2) preparing a crosslinking agent aqueous solution;
• (3) preparing a first suspension formed by a nano carbon powder and a liquid, and mixing and stirring the first suspension with the iodine-containing sodium alginate aqueous solution prepared in the step (1), to form a second suspension;
• (4) placing the second suspension obtained in the step (3) in a syringe, and injecting the second suspension into the crosslinking agent aqueous solution prepared in the step (2), to obtain the nanocarbon-iodine calcium alginate microsphere, wherein the crosslinking agent aqueous solution is in a stirring state;
• (5) filtering and drying the nanocarbon-iodine calcium alginate microsphere obtained in the step (4) to obtain a dried microsphere;
• and
• (6) sieving the dried microsphere obtained in the step (5) to obtain a sieved microsphere and sterilizing the sieved microsphere through a cobalt-60 irradiation;
• wherein the iodine-containing sodium alginate aqueous solution is a solution obtained by dissolving potassium iodide and sodium alginate in water, a mass ratio of the potassium iodide to the sodium alginate is (5-10):(0.1-2.0), and a mass concentration of the iodine-containing sodium alginate aqueous solution is 10-20 mg/mL.