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Preparation method and application of praseodymium cuprate nano absorbing material

A nano-adsorption material, praseodymium cuprate technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of limiting the production and application of praseodymium cuprate, low purity of praseodymium cuprate, unstable performance, etc., to achieve Conducive to the effect of nanometerization, good dispersion and short reaction time

Active Publication Date: 2018-03-09
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The praseodymium cuprate prepared by existing methods has problems such as low purity, large particles, and unstable performance, which limit the production and application of praseodymium cuprate

Method used

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  • Preparation method and application of praseodymium cuprate nano absorbing material
  • Preparation method and application of praseodymium cuprate nano absorbing material
  • Preparation method and application of praseodymium cuprate nano absorbing material

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Embodiment 1

[0031] The preparation method of praseodymium cuprate nano-adsorption material, comprising the following steps: according to praseodymium cuprate Pr 2 CuO 4 In the stoichiometric ratio of Cu and Pr, weigh 5 mmol copper acetate and 10 mmol praseodymium acetate, dissolve in deionized water, and the volume dosage of deionized water is 4 times the total molar mass of copper acetate and praseodymium acetate, and mechanically stir until completely dissolved, to obtain Solution A; take by weighing 30mmol ammonia water and 20mmol dimethylglyoxime and dissolve in the mixed solution of 200mmol ethanol and water, stir mechanically until completely dissolved, control the pH value of the solution to be 10, obtain solution B; slowly pour solution B into solution A , add 2g polyethylene glycol 1000, stir magnetically for 1h (rotor speed is 800r / min) to obtain solution C; use improved electrospinning to prepare composites with nanometer diameters. During the preparation process, in the existi...

Embodiment 2

[0034] The preparation method of praseodymium cuprate nano-adsorption material, comprising the following steps: according to praseodymium cuprate Pr 2 CuO 4In the stoichiometric ratio of Cu and Pr, weigh 5 mmol copper nitrate and 10 mmol praseodymium nitrate, dissolve in deionized water, and the volume dosage of deionized water is 5 times the total molar mass of copper nitrate and praseodymium nitrate, and mechanically stir until completely dissolved to obtain Solution A; Weigh 35 mmol triethylamine and dissolve it in a mixed solution of 200 mmol ethanol and water (without adding dimethylglyoxime dispersant), stir mechanically until completely dissolved, and control the pH of the solution to be 10 to obtain solution B; Slowly pour B into solution A, add 1 g of polyethylene glycol 2000, stir magnetically for 1 h (rotor speed is 800 r / min) to obtain solution C; leave solution C to stand without applying an electric field, until the phenomenon of solid-liquid separation occurs, t...

Embodiment 3

[0037] The preparation method of praseodymium cuprate nano-adsorption material, comprising the following steps: according to praseodymium cuprate Pr 2 CuO 4 In the stoichiometric ratio of Cu and Pr, weigh 5 mmol copper nitrate and 10 mmol praseodymium nitrate, dissolve in deionized water, and the volume dosage of deionized water is 5 times the total molar mass of copper nitrate and praseodymium nitrate, and mechanically stir until completely dissolved to obtain Solution A; Weigh 30mmol of ammonia water and 20mmol of dimethylglyoxime and dissolve in a mixed solution of 200mmol of ethanol and water, mechanically stir until completely dissolved to obtain solution B; Pour solution B into solution A slowly, add 1g polyethylene glycol 2000, magnetic stirring for 1 h (rotor speed is 800 r / min), the pH value of the solution is controlled to 10.5, and solution C is obtained; the composite filaments with nanometer diameter are prepared by improved electrospinning. On the basis that the...

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Abstract

The invention belongs to the technical field of nano absorbing materials and particularly relates to a preparation method and application of a praseodymium cuprate nano absorbing material. The preparation method is implemented through impressed voltage, and through control over an applied electric field, can change morphology and related characters of prepared PrCuO4 nano powder, thereby achievinghigh controllability. The preparation method of the praseodymium cuprate nano absorbing material improves common electric field operation, combines the electric field with solution, and control overthe added amount of dispersing agent of dimethylglyoxime with change in the pH of the solution to prepare the nano powder with a large specific surface area and uniform particles; the nano powder hassingle absorbing effects, provides a new material and a new idea for existing water pollution treatment and develops new properties.

Description

technical field [0001] The invention belongs to the technical field of nano-adsorption materials, and in particular relates to a preparation method and application of a praseodymium cuprate nano-adsorption material. Background technique [0002] Rare earth is an important strategic resource. Due to the 4f orbital that is not filled with electrons and the property of lanthanide shrinkage, rare earth elements can have variable coordination numbers when they act as the central atom of the complex. Therefore, it often exhibits unique chemical properties. Rare earth materials, as adsorption or catalysts, have been widely used in the purification of motor vehicle exhaust and harmful toxic gases, the treatment of industrial sewage and wastewater, the catalytic combustion of fossil fuels, and the redox reaction of new fuel cells. [0003] Copper-based rare earth materials are typical perovskite-like complex oxide structures (A 2 BO 4 ), has attracted more and more attention due t...

Claims

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Application Information

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IPC IPC(8): C01G3/00B01J20/02B01J20/28B01J20/30C02F1/28B82Y30/00C02F101/36C02F101/38
CPCB01J20/0274B01J20/28007B01J20/2804B82Y30/00C01G3/00C01P2002/72C01P2004/03C02F1/281C02F2101/36C02F2101/38
Inventor 郭瑞刘宣文叶志奇房昭金磊李鑫苏娜
Owner 东北大学秦皇岛分校
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