Preparation method for chelate resin loaded copper-iron bimetallic nanometer material
A chelating resin and metal nanotechnology, which is applied in the preparation of nitrogen, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as slow reaction speed, and achieve simple and easy preparation methods , highly selective reduction to nitrogen, and the effect of efficient reduction of nitrate
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[0031] Such as figure 1 Shown in the preparation flow diagram of a preferred embodiment of the present invention, a kind of preparation method step of chelating resin loaded copper-iron bimetal nanomaterial is as follows:
[0032] Step 1: Weigh 0.2-0.6g copper sulfate pentahydrate into the first container, add appropriate amount of deionized water to completely dissolve copper sulfate pentahydrate, then weigh 1.0-2.0g chelating resin (D407) into the first container and Place the first container in a constant temperature oscillator, set the temperature at 30-40°C, and shake for 10-12h to obtain the adsorbed Cu 2+ The chelating resin, then wash this chelating resin with deionized water multiple times;
[0033]Step 2: Weigh 0.6-1.0g of ferrous sulfate heptahydrate and add it to the second container, add an appropriate amount of deionized water to completely dissolve ferrous sulfate heptahydrate, and absorb the Cu sulfate obtained in step 1 2+ Add the chelating resin particles i...
Embodiment 1
[0035] Preparation of embodiment 1 chelating resin loaded copper-iron bimetallic nanomaterial
[0036] Step 1: Weigh 0.3901g of copper sulfate pentahydrate and add it to a 50mL conical flask, then add 25mL of deionized water to the conical flask to completely dissolve copper sulfate pentahydrate, then weigh 1g of chelating resin (D407) in the conical flask Place the Erlenmeyer flask in a constant temperature shaker, set the temperature at 30°C, and shake for 12 hours to obtain the adsorbed Cu 2+ The chelating resin of this adsorption Cu2+ is washed with deionized water then 3 times of the chelating resin;
[0037] Step 2: Weigh 0.8688g ferrous sulfate heptahydrate and add it to a 50mL conical flask, then add 25mL deionized water to the conical flask to completely dissolve ferrous sulfate heptahydrate, and absorb the Cu sulfate obtained in step 1 2+ Add the chelating resin particles into the Erlenmeyer flask and place the Erlenmeyer flask in a constant temperature oscillator, ...
Embodiment 2
[0041] Preparation of Fe-Cu Bimetallic Nanomaterials
[0042] In this example, Fe-Cu bimetallic nanomaterials were prepared by the liquid phase reduction method. The steps are: respectively weigh 5.6g of ferrous sulfate heptahydrate and 2.5g of copper sulfate pentahydrate and completely dissolve them in 100mL of deionized water, and transfer them to 250mL In the flask, under mechanical stirring at 400rpm, N2 has been passed through to remove dissolved oxygen in the solution. Subsequently, 3.5 g of potassium borohydride was weighed and dissolved in 50 mL of deionized water to prepare a potassium borohydride solution, and then the potassium borohydride solution was dropped into a four-necked flask. After the reaction was completed, the obtained black precipitate was washed three times with anaerobic water and absolute ethanol respectively, and suction-filtered, and then the black precipitate was dried in a vacuum drying oven at a temperature of 70°C for 26 hours to obtain the pr...
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