A kind of copper phosphate nanosphere and its preparation method and application
A technology of nanospheres and copper phosphate, applied in nanotechnology, chemical instruments and methods, phosphorus compounds, etc., can solve the problems of poor thermal stability, easy deactivation, poor acid resistance, etc., and achieve good thermal stability and good catalytic activity Effect
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[0025] The invention provides a method for preparing copper phosphate nanospheres, comprising the following steps:
[0026] (1) urea and sodium lauryl sulfate are dissolved in water to obtain a mixed solution;
[0027] (2) The mixed solution obtained in the step (1) is mixed with water-soluble copper salt, phosphoric acid and water, and then subjected to a hydrothermal reaction to obtain copper phosphate nanospheres.
[0028] In the present invention, water is preferably added as a solvent in different batches. In the present invention, there is no special limitation on the adding batches of the water, which can be adjusted according to the addition of the reaction raw materials. In the present invention, the limitation of the amount of the following reaction raw materials is based on the total volume of water in the reaction system.
[0029] The invention dissolves urea and sodium lauryl sulfate in water to obtain a mixed solution. In the present invention, there is no spe...
Embodiment 1
[0052] Accurately weigh 6g urea, 0.05g sodium dodecyl sulfate (SDS), 0.125g copper sulfate (CuSO 4 ·5H 2 (2), 0.163g of phosphoric acid with a mass fraction of 30%, fully stirred and dissolved at room temperature with 4mL deionized water, added dropwise to a beaker with 84mL deionized water successively, continued to stir for 30 minutes, and at a stirring rate of 800rpm, the mixture was transferred to In a 170mL volume autoclave, 80°C, the pH value before the reaction started was 3.0, and the reaction was carried out for 2 hours. After the reaction, the pH value was 7.0. The product was centrifuged at a centrifugal rate of 4000rpm. The copper phosphate nanospheres were obtained by drying in a forced air oven for 24 hours.
[0053] The XRD, TEM and SEM figures of the copper phosphate nanospheres prepared in this embodiment are as follows: figure 1 , figure 2 and image 3 shown. From figure 1 It can be seen that each diffraction peak is consistent with 22-0548 in the PDF ...
Embodiment 2
[0059] The copper phosphate nanosphere obtained in Example 1 is used as a peroxide mimetic enzyme to catalyze the synthesis of water-soluble conductive poly-3,4-ethylenedioxythiophene (PEDOT):
[0060] ① Accurately weigh 0.085g of 3,4-ethylenedioxythiophene monomer and 0.124g of sodium polystyrene sulfonate, add to 20ml of citric acid-disodium hydrogen phosphate buffer solution with pH=3.2, and stir under ice bath 4 hours.
[0061] ② Add 5 mg of the copper phosphate nanosphere peroxide mimetic enzyme prepared in Example 1, pipette 598 μL of 1 mol / L hydrogen peroxide solution dropwise into the above solution, stir and react in a water bath at 70 ° C, and make the thiophene monomer react in the copper phosphate nanosphere Polymerization occurs under the catalysis of balls.
[0062] ③ The reaction was terminated after 24 hours of polymerization, and the reaction system was centrifuged at 6000 rpm for 10 minutes to remove the copper phosphate nanosphere catalyst.
[0063] ④The u...
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