Preparation method and application of neodymium cuprate nano-powder

A nano-powder, cupric acid technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of low powder purity, limited popularization and application, particle agglomeration, etc., and achieves simple process and simple preparation process. Easy, high performance results

Active Publication Date: 2018-02-09
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

Nd prepared by existing methods 2 CuO 4 Powders often have problems such as low purity, particle agglomeration, and poor performance, which limit the Nd 2 CuO 4 The promotion and application

Method used

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  • Preparation method and application of neodymium cuprate nano-powder

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Embodiment 1

[0033] A preparation method for neodymium cuprate nanopowder, comprising the following steps: according to neodymium cuprate (Nd 2 CuO 4 The stoichiometric ratio of Cu and Nd in ) weighed 2mmol copper acetate and 4mmol neodymium acetate and dissolved them in deionized water. Dissolve to obtain solution A; measure 4mmol of dimethylglyoxime and place it in a beaker, add 16mmol of deionized water, and mechanically stir at 500r / min until completely dissolved to obtain solution B; slowly pour solution B into solution A, 500r / min Stir mechanically until evenly mixed to obtain solution C; heat solution C at 60°C and stir magnetically at 500r / min until the solution becomes viscous, then put it in an oven at 80°C for 7 hours to obtain substance C; take out substance C and put Put it into the crucible, first heat up in a low-temperature furnace for 3 hours, sinter at 700°C, and keep warm for 4 hours, then put it in a high-temperature nitrogen furnace to heat up for 3 hours, sinter at 1...

Embodiment 2

[0036] A preparation method for neodymium cuprate nanopowder, comprising the following steps: according to neodymium cuprate (Nd 2 CuO 4 The stoichiometric ratio of Cu and Nd in ) weighs 2.5mmol copper carbonate and 5mmol neodymium nitrate and dissolves them in deionized water. Completely dissolve to obtain solution A; measure 5mmol of dimethylglyoxime and place it in a beaker, add 20mmol of deionized water, and mechanically stir at 900r / min until completely dissolved to obtain solution B; slowly pour solution B into solution A, 900r / min Min mechanically stirred until uniformly mixed to obtain solution C; heated solution C at 60°C and magnetically stirred at 900r / min until the solution became viscous, then put it in an oven at 90°C for 6 hours to obtain substance D; took substance D out Put it into a crucible, first heat up in a low-temperature furnace for 3 hours, sinter at 750°C, and keep warm for 4 hours, then put it in a high-temperature nitrogen furnace to heat up for 3 ...

Embodiment 3

[0039] A preparation method for neodymium cuprate nanopowder, comprising the following steps: according to neodymium cuprate (Nd 2 CuO 4 The stoichiometric ratio of Cu and Nd in ) weighed 2mmol of copper acetate and 4mmol of neodymium nitrate and dissolved them in deionized water. Dissolve to obtain solution A; measure 10mmol of dimethylglyoxime and place it in a beaker, add 45mmol of deionized water, and mechanically stir at 1000r / min until completely dissolved to obtain solution B; slowly pour solution B into solution A at 1000r / min Stir mechanically until evenly mixed to obtain solution C; heat solution C at 70°C and magnetically stir until the solution becomes viscous, then put it in an oven at 80°C for 6.5 hours to obtain substance D; take out substance D and put it in a crucible Inside, first heat up in a low-temperature furnace for 3.5 hours, sinter at 700°C, hold for 4 hours, then put it in a high-temperature furnace for 3.5 hours, sinter at 1000°C (without nitrogen),...

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Abstract

The invention relates to the technical field of photocatalysis of nano-materials and in particular relates to a preparation method and application of neodymium cuprate nano-powder. The preparation method comprises the following steps: weighing soluble salt of copper and neodymium according to the mol ratio of Cu to Nd in Nd2CuO4; dissolving the soluble salt into de-ionized water and stirring untilthe soluble salt is dissolved to obtain a solution A; weighing dimethylglyoxime and putting the dimethylglyoxime into a beaker; adding de-ionized water and stirring until the dimethylglyoxime is dissolved to obtain a solution B; slowly pouring the solution B into the solution A and stirring until the solution A and the solution B are uniformly mixed to obtain a solution C; heating the solution Cunder the condition that the temperature is 60 DEG C to 80 DEG C; stirring until the solution is viscous and drying to obtain a substance D; taking out the substance D and putting the substance D intoa crucible; calcining in a low-temperature furnace; then putting the substance D into a high-temperature nitrogen furnace and calcining to obtain a calcined product; crushing and grinding to obtain the neodymium cuprate Nd2CuO4 nano-powder. The preparation method provided by the invention has the advantages that a preparation technology is simple and feasible and the obtained Nd2CuO4 nano-powderhas excellent performance and has an obvious photocatalytic effect on malachite green; the photocatalytic effect is not reported at present.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis of nanomaterials, and in particular relates to a preparation method and application of neodymium cuprate nanopowder. Background technique [0002] Copper-rare earth materials have attracted more and more attention because of their excellent physical and chemical properties and can be widely used in many fields such as superconductivity, adsorption, and photocatalysis. Different preparation methods have a great influence on its morphology, structure, physical and chemical properties, etc. Therefore, the design and preparation of copper-based rare earth materials has always been a research hotspot in the field of materials. [0003] The reported methods for preparing neodymium cuprate include high-temperature solid-phase synthesis, acetate pyrolysis, and magnetron sputtering. Among them, the acetate pyrolysis method (A.P. Khandale, S.S. Bhoga. Effect of Srdoping on structural, electrical and...

Claims

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Application Information

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IPC IPC(8): C01G3/00B01J23/83B82Y30/00
CPCB01J23/002B01J23/83B01J35/004B82Y30/00C01G3/00C01P2002/72C01P2004/03
Inventor 刘宣文郭瑞闫爱国徐娟娟管迪杜雨宸苏娜
Owner 东北大学秦皇岛分校
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