Preparation method of silver-loaded activated carbon
A technology of silver-loaded activated carbon and activated carbon, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, and chemicals for biological control, etc. The effect of enhancing the silver loading effect
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Embodiment 1
[0021] A preparation method for silver-loaded activated carbon, comprising the following steps:
[0022] Step 1, soak the activated carbon in the silver nitrate solution, let it stand for 2 hours, then heat and boil until the solution is evaporated to dryness, then dry the activated carbon to obtain the pretreated activated carbon, the concentration of the above silver nitrate solution is 2mol / L, and the activated carbon is added The amount of activated carbon is just enough to completely enter the silver nitrate solution, and the temperature of activated carbon drying is 60°C, and it is dried under vacuum conditions;
[0023] Step 2, the gac after the pretreatment is added in the solution of ascorbic acid, the concentration of ascorbic acid solution is 2.5mol / L, is heated reaction 1 hour under the vacuum condition of 0.03MPa in vacuum degree, then stands still under normal temperature condition for 3 hour, remove the activated carbon;
[0024] Step 3, heating the activated c...
Embodiment 2
[0027] A preparation method for silver-loaded activated carbon, comprising the following steps:
[0028] Step 1, soak the activated carbon in the silver nitrate solution, let it stand for 2 hours, then heat and boil until the solution is evaporated to dryness, then dry the activated carbon to obtain the pretreated activated carbon, the concentration of the above silver nitrate solution is 2.2mol / L, the activated carbon The amount added is just enough to completely enter the silver nitrate solution. The temperature for drying activated carbon is 60°C, and it is dried under vacuum conditions. The process of heating and boiling is to heat to boiling at a heating rate of 3-5°C / min;
[0029] Step 2, the gac after the pretreatment is joined in the solution of ascorbic acid, the concentration of ascorbic acid solution is 2.6mol / L, is that heating reaction 2 hours under the vacuum condition of 0.04MPa in vacuum degree, then leaves standstill under normal temperature condition for 4 ho...
Embodiment 3
[0033] A preparation method for silver-loaded activated carbon, comprising the following steps:
[0034] Step 1, soak the activated carbon in the silver nitrate solution, let it stand for 3 hours, then heat and boil until the solution is evaporated to dryness, then dry the activated carbon to obtain the pretreated activated carbon, the concentration of the above silver nitrate solution is 2.4mol / L, the activated carbon The amount added is just enough to completely enter the silver nitrate solution. The temperature for drying activated carbon is 60°C, and it is dried under vacuum conditions. The process of heating and boiling is to heat to boiling at a heating rate of 3-5°C / min;
[0035] Step 2, the gac after the pretreatment is joined in the solution of ascorbic acid, the concentration of ascorbic acid solution is 2.7mol / L, is 0.05MPa heating reaction 2 hours under the vacuum condition of vacuum degree, then leaves standstill under normal temperature condition for 4 hour, remo...
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Abstract
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