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Preparation method and application of samarium cuprate nano-photocatalytic powder

A technology of catalytic powder and nano-powder, which is applied in the field of photocatalysis, can solve the problems of unsatisfactory preparation method, complicated and difficult preparation process, poor product performance, etc. performance effect

Active Publication Date: 2018-03-06
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But samarium cuprate Sm 2 CuO 4 The existing preparation method is unsatisfactory, and there are problems such as the preparation process is complicated and difficult to popularize, and the performance of the obtained product is not good.
The preparation method provided by the present invention is simple in operation and easy to meet the preparation conditions, and the prepared Sm 2 CuO 4 High purity, uniform particle size, good controllability, excellent performance, there is no report on malachite green yet

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Effect test

Embodiment 1

[0034] (1) According to samarium cuprate Sm 2 CuO 4 The stoichiometric ratio of Cu and Sm in the medium weighed 0.0067molCu(CH 3 COO) 2 ·H 2 O and 0.0134mol samarium acetate are dissolved in deionized water, and the volume consumption of deionized water is 4 times of the total molar mass of copper acetate and samarium acetate, mixed uniformly to obtain solution A;

[0035] (2) Add 3 g of phenolic resin to solution A, add 1 g of dimethylglyoxime, heat and stir at 60° C. for 2 hours, until the solution becomes viscous to obtain substance B;

[0036] (3) Electrospinning is used to prepare nano-scale photocatalytic composite oxides. During the preparation process, an AC variable electric field of ±10V is applied to the positive and negative electrodes of the original electrospinning equipment to control the direction of its current and form a rectangular tooth shape. Radio waves: Apply positive and negative DC electric fields, the voltage of the positive and negative DC electr...

Embodiment 2

[0041] (1) According to samarium cuprate Sm 2 CuO 4 The stoichiometric ratio of Cu and Sm in the medium weighed 0.0067molCu(CH 3 COO) 2 ·H 2 O and 0.0134mol samarium carbonate are dissolved in deionized water, and the consumption of deionized water is 5 times of the total mass of copper acetate and samarium carbonate, mixed uniformly to obtain solution A;

[0042] (2) Add 3g of phenolic resin to solution A, add 1.5g of dimethylglyoxime, heat and stir at 80°C for 2h, until the solution becomes viscous to obtain substance B;

[0043](3) Electrospinning is used to prepare nano-scale photocatalytic composite oxides. During the preparation process, an AC variable electric field of ±5V is applied to the positive and negative electrodes of the original electrospinning equipment to control the direction of its current and form a rectangular tooth shape. Radio waves: Apply positive and negative DC electric fields, the voltage of the positive and negative DC electric fields is ±800V...

Embodiment 3

[0048] (1) According to samarium cuprate Sm 2 CuO 4 The stoichiometric ratio of Cu and Sm in the medium weighed 0.0067mol copper nitrate and 0.0134mol samarium nitrate, dissolved in deionized water, the amount of deionized water was 6 times the total mass of copper nitrate and samarium nitrate, mixed uniformly to obtain solution A;

[0049] (2) Add 4 g of phenolic resin to solution A, add 2 g of dimethylglyoxime, heat and stir at 80° C. for 1 h, until the solution becomes viscous to obtain substance B;

[0050] (3) Electrospinning is used to prepare nano-scale photocatalytic composite oxides. During the preparation process, an AC variable electric field of ±5V is applied to the positive and negative electrodes of the original electrospinning equipment to control the direction of its current and form a rectangular tooth shape. Radio waves: Apply positive and negative DC electric fields, the voltage of the positive and negative DC electric fields is ±1000V, and the reaction tim...

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Abstract

The invention relates to the technical field of photocatalysis and discloses a preparation method and application of samarium cuprate nano-photocatalytic powder. Preparation is performed by adopting an improved electrostatic spinning method and an electric field. The method is low in sintering temperature, and the samarium cuprate (Sm2CuO4) nano-powder is high in purity, uniform in particle size and large in specific surface area and has excellent photocatalytic performance on malachite green. The preparation method provided by the invention is easy to operate and low in cost; the preparationconditions are mild, and the condition that impurities are introduced or losses of metallic materials are caused is avoided; and the stoichiometric ratio of metal ions in precipitates can be ensured,and the method can be popularized and applied to industrial production. The prepared samarium cuprate nano-photocatalytic powder can serve as a photocatalyst and is applied to treatment of malachite green containing industrial and dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and in particular relates to a preparation method and application of samarium cuprate nanometer photocatalytic powder. Background technique [0002] The problem of water pollution has attracted more and more attention. Industrial wastewater has the most complex composition, diverse water quality, great harm and difficult treatment. Malachite green is a common benzene compound in industrial dye wastewater. It is highly toxic and carcinogenic. Its treatment technology has always been the focus and difficulty of people's research. [0003] At present, the methods for treating wastewater containing malachite green mainly include: flocculation precipitation method, electrolysis method, adsorption method, oxidation method, microbial degradation method, etc. Among them, the adsorption method is a more commonly used method. This method uses an adsorbent or a filter bed composed of adsorbent part...

Claims

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Application Information

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IPC IPC(8): C01G3/00B01J23/83C02F1/30C02F101/30
Inventor 刘宣文郭瑞王仁超倪志远徐娟娟金磊钟创业
Owner NORTHEASTERN UNIV
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