TH9573C3 - The process for preparing zinc oxide nanoparticles from cassava starch and products thereof. - Google Patents

Abstract

DC60 (06/03/57) This invention is a process for preparing zinc oxide nanoparticles from cassava starch and its products. That consists of the process of dissolving cassava starch Stirring with a propeller-driven stirrer at a speed of 50-1000 rpm for 30-60 minutes in water at 80-100 ° C, then add nitrate hectic zinc. Zahydrate into the aqueous solution of starch prepared above. And also added by adding silver nitrate solution To laced with silver At various quantities, 0.1-2 percent by mole, relative to zinc oxide. Then stir the solution by machine Stirring using a propeller at a speed of 50-1000 rpm at a temperature of 80-90 degrees Celsius for 30-60 minutes at the end of time. The resulting solution was dried at 50-70 ° C for 12-24 hours and sintered at 500-600 ° C for 2-4 hours. The invention was the process of preparing zinc oxide nanoparticles from tapioca starch. Cassava And such products Containing the process of dissolving cassava starch Stirring with a propeller-driven stirrer at a speed of 50-1000 rpm for 30-60 minutes in water at 80-100 ° C, then add nitrate hectic zinc. Zahydrate into the aqueous solution of starch prepared above. And also added by adding silver nitrate solution To laced with silver At various quantities, 0.1-2 percent by mole, relative to zinc oxide. Then stir the solution by machine Stirring using a propeller at a speed of 50-1000 rpm at a temperature of 80-90 degrees Celsius for 30-60 minutes at the end of time. The resulting solution was dried at 50-70 degrees Celsius for 12-24 hours and the water was burned at 500-600 degrees Celsius for 2-4 hours.

Claims (1)

1. Preparation process of zinc oxide nanoparticles from cassava starch. It consists of the following steps: A. Dissolving cassava starch at a concentration of 2-10% by weight by stirring with a stirrer. The propeller is stirred at a speed of 50-1000 rpm for 30-60 minutes in water at a temperature of 80-100 degrees Celsius, then added 1.01-0.05 mol of zinc nitrate hexahydrate. Into the starch water solution prepared above In the case of preparing zinc oxide nanoparticles Silver It also contains the addition of silver solution in the tetrate. The amount of 0.1-2 percent by mole compared with the initial zinc nitrate. B. Stirring with a stirrer using a agitator at a speed of 50-1000 rpm at a temperature of 80-100 degrees Celsius for 30-60 minutes and c. Drying at 50-70 ° C for 12-24 hours and incinerating products at 500-600 ° C for 2-4 hours and such products "