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Preparation method of lanthanum cuprate nano adsorption material

A nano-adsorption material, lanthanum cuprate technology, applied in the direction of nanotechnology, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of high impurity content in products, high synthesis temperature, uncontrollable reaction conditions, etc., and achieve catalytic Excellent effect, large aspect ratio and specific surface area, good performance effect

Active Publication Date: 2018-03-30
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently reported preparation methods for lanthanum cuprate include high-temperature solid-phase method, hydrothermal synthesis method, and self-propagating combustion method. These methods all have uncontrollable reaction conditions, high synthesis temperature, and high impurity content in the product. Popularization and application of lanthanum acid materials

Method used

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  • Preparation method of lanthanum cuprate nano adsorption material
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  • Preparation method of lanthanum cuprate nano adsorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) According to lanthanum cuprate La 2 CuO 4 In the stoichiometric ratio of Cu and La, weigh 2mmol copper acetate and 4mmol lanthanum acetate and dissolve them in deionized water. The volume of deionized water is 6 times the total molar mass of copper acetate and lanthanum acetate and mix evenly to obtain solution A;

[0037] (2) Weigh 2g sodium hydroxide and dissolve in 20g ethanol solution, adjust pH=10 to obtain solution B;

[0038] (3) Slowly pour solution B into solution A, add 3g of polyethylene glycol and 1g of dimethylglyoxime, stir for 30min, and the rotor speed is 600r / min, and prepare solution C;

[0039] (4) Apply positive and negative direct current electric fields, the voltage of positive and negative direct current electric fields is ±5000V, and the reaction time is 30min; add ±5V alternating current electric fields to control the direction of its current and form rectangular tooth-shaped electric waves; let the solution C stand still, and then Solutio...

Embodiment 2

[0043] (1) According to lanthanum cuprate La 2 CuO 4 In the stoichiometric ratio of Cu and La, weigh 2mmol copper nitrate and 4mmol lanthanum acetate and dissolve them in deionized water. The volume of deionized water used is 6 times the total molar mass of copper nitrate and lanthanum acetate and mixed evenly to obtain solution A;

[0044] (2) Weigh 1.5g potassium hydroxide and dissolve in 20g ethanol solution, adjust pH=10.5 to obtain solution B;

[0045] (3) Slowly pour solution B into solution A, add 2 g of polyethylene glycol and 1 g of dimethylglyoxime, stir magnetically for 35 min, and the rotor speed is 700 r / min, and prepare solution C;

[0046] (4) Apply positive and negative direct current electric fields, the voltage of the positive and negative direct current electric fields is ±3000V, and the reaction time is 60min; add ±3V alternating current electric fields to control the current direction and form rectangular tooth-shaped electric waves; let the solution C st...

Embodiment 3

[0050] (1) According to lanthanum cuprate La 2 CuO 4 In the stoichiometric ratio of Cu and La, take 2mmol copper acetate and 4mmol lanthanum carbonate and dissolve them in deionized water. The volume of deionized water used is 7 times the total molar mass of copper acetate and lanthanum carbonate and mixed evenly to obtain solution A;

[0051] (2) Weigh 2.5g of triethylamine and dissolve it in 25g of ethanol solution, adjust pH=10 to obtain solution B;

[0052] (3) Slowly pour solution B into solution A, add 2 g of polyethylene glycol and 1 g of dimethylglyoxime, stir magnetically for 30 min, and the rotor speed is 700 r / min, and prepare solution C;

[0053] (4) Apply positive and negative direct current electric fields, the voltage of positive and negative direct current electric fields is ±2000V, and the reaction time is 60min; add ±5V alternating current electric fields to control the direction of its current to form rectangular tooth-shaped electric waves; let the solutio...

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Abstract

The invention relates to the technical field of preparation of copper-based rare earth materials, specifically to a preparation method of a lanthanum cuprate nano adsorption material. The powder preparation is performed in combination with an improved electrostatic spinning method and a chemical synthesis method. Lanthanum cuprate La2CuO4 nano power prepared according to the method provided by theinvention is high in purity, good in appearance, small in grain size and strong in adsorption property for malachite green. The preparation method provided by the invention is economic, efficient, simple to operate, low in requirements for equipment conditions and capable of realizing the controllable preparation of La2CuO4; the prepared lanthanum cuprate power has a nanometer scale, so that theapplication range of the lanthanum cuprate power is greatly enlarged, and the suitability for industrial production is realized.

Description

technical field [0001] The invention relates to the technical field of preparation of copper-based rare earth materials, in particular to a method for preparing a lanthanum cuprate nano-adsorption material. Background technique [0002] The application of rare earth materials as adsorbents in the treatment of printing and dyeing wastewater has attracted more and more attention. The mechanism of rare earth adsorbents to remove pollutants is: rare earth metals coordinate with water in aqueous solution to form hydrated oxides. Rare earth metal atoms are positively charged due to their low potential and high alkalinity, so they have a greater resistance to anions in water. the adsorption activity. [0003] Lanthanum cuprate La 2 CuO 4 It is a typical perovskite-like composite oxide in rare earth materials. It is a p-type semiconductor material and also the parent phase material of superconducting materials. In La 2 CuO 4 The interior has an alternating combination of two d...

Claims

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Application Information

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IPC IPC(8): C01G3/00B82Y40/00B01J20/02B01J20/30C02F1/28C02F101/36C02F101/38
CPCB01J20/0262B82Y40/00C01G3/00C01P2002/72C01P2004/03C02F1/281C02F2101/36C02F2101/38
Inventor 郭瑞刘宣文倪志远王仁超叶志奇杜雨宸
Owner NORTHEASTERN UNIV
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