Preparation method of ClO3- ionic liquid dispersed iron nanoparticles
A technology of ionic liquid and nano-iron, which is applied in the direction of nanotechnology, can solve the problems of high requirements on operating conditions, small particle size of nano-iron, and difficult to achieve, and achieve easy process control, small particle size, and dispersion performance good effect
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[0025] Example 1:
[0026] To prepare dispersed nano iron particles, the preparation steps are:
[0027] (1) Weigh ferric chloride and dissolve it in distilled water to form a solution with an iron ion concentration of 0.8 mol / L;
[0028] (2) Add surfactant-soluble starch to the solution obtained in (1) to make its concentration reach 0.4 g / L, and add complexing agent citric acid to make its concentration reach 0.004 g / L;
[0029] (3) The ClO 3 - The (chlorate ion) type ionic liquid stock solution is diluted 100 times and then added to the solution obtained in (2) to make its content 2:100 (volume ratio).
[0030] (4) Weigh sodium borohydride and dissolve it in distilled water to prepare a solution with a sodium borohydride content of 0.02 mol / L;
[0031] (5) While the solution obtained in (3) is in a stirring state, drop the solution (4) into the reduction reaction at a rate of 1.5 ml / sec. During the reaction, the temperature is controlled at 20 degrees Celsius until the reaction is co...
Example Embodiment
[0034] Example 2:
[0035] To prepare dispersed nano iron particles, the preparation steps are:
[0036] Weigh ferric sulfate and dissolve it in a mixed solution of distilled water and absolute ethanol (volume ratio=7:3) to form a solution with an iron ion concentration of 0.2 mol / liter;
[0037] (8) Add surfactant-soluble starch to the solution obtained in (1) to make its concentration reach 0.2 g / L, and add complexing agent citric acid to make its concentration reach 0.002 g / L;
[0038] (9) The ClO 3 - (Chlorate ion) type ionic liquid. The original solution is diluted by 100 and then added to the solution obtained in (2) to make the content of 3:100 (volume ratio).
[0039] (10) Weigh sodium borohydride and dissolve it in distilled water to prepare a solution with a sodium borohydride content of 0.02 mol / L;
[0040] (11) While the solution obtained in (3) is under stirring, drop the solution (4) into the reduction reaction at a rate of 1 ml / s, and control the temperature at 20 degrees...
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