Silver ion adsorbant and its preparation process
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Embodiment 1
[0020] Weigh 0.711g (4.5mmol) of naphthalene diamine monomer and 0.129g (0.5mmol) of sodium diphenylamine sulfonate according to the monomer feeding molar ratio of 90 / 10 and dissolve them in 25mL of acetonitrile and 25mL of distilled water respectively, and ultrasonicate the resulting solution for 3~ 5 minutes to promote its full dissolution. 1.141 g (5 mmol) of ammonium persulfate was dissolved in 50 mL of distilled water as an oxidizing agent solution. The above two monomer solutions were poured into a 250mL beaker, and placed in a constant temperature water bath at 20°C to preheat to the reaction temperature. The oxidizing agent solution is added to the monomer solution. After the dropwise addition was completed, the reaction was continued for 6 h, and the reaction ended. A black powdery polymer was obtained with a yield of 696 mg and a yield of 82.8%.
Embodiment 2
[0022] Weigh 0.533g (3.5mmol) of naphthalene diamine monomer and 0.407g (1.5mmol) of sodium diphenylamine sulfonate according to the monomer molar ratio of 70 / 30, dissolve them in 25mL of acetonitrile and 25mL of distilled water respectively, and ultrasonicate the resulting solution for 3~ 5 minutes to promote its full dissolution. 1.141 g (5 mmol) of ammonium persulfate was dissolved in 50 mL of distilled water as an oxidizing agent solution. The above two monomer solutions were poured into a 250mL beaker, and placed in a constant temperature water bath at 20°C to preheat to the reaction temperature. The oxidizing agent solution is added to the monomer solution. After the dropwise addition, the reaction was continued at 20° C. for 6 h, and the reaction ended. A black powdery polymer was obtained with a yield of 589.2 mg and a yield of 61.4%.
Embodiment 3
[0024] Weigh 0.395g (2.5mmol) of naphthalene diamine monomer and 0.678g (2.5mmol) of sodium diphenylamine sulfonate according to the monomer molar ratio of 50 / 50, dissolve them in 25mL of acetonitrile and 25mL of distilled water respectively, and ultrasonicate the resulting solution for 3~ 5 minutes to promote its full dissolution. 1.141 g (5 mmol) of ammonium persulfate was dissolved in 50 mL of distilled water as an oxidizing agent solution. The above two monomer solutions were poured into a 250mL beaker, and placed in a constant temperature water bath at 20°C to preheat to the reaction temperature. The oxidizing agent solution is added to the monomer solution. After the dropwise addition was completed, the reaction was continued for 6 h, and the reaction ended. A black powdery polymer was obtained with a yield of 500.2 mg and a yield of 46.6%.
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