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Method for microwave rapid synthesis of lead, graphite oxide doped bismuth ferrite and foam nickel composite material and application thereof

A composite material, bismuth ferrite technology, applied in chemical instruments and methods, oxidized water/sewage treatment, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of few applications, poor synthesis effect, composite catalysis The problem of long synthesis time of materials is achieved, and the synthesis method is simple, the synthesis time is shortened, and the synthesis time is short.

Inactive Publication Date: 2017-10-20
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of longer synthesis time, poor synthesis effect and less application in the environmental field of existing composite catalytic materials, and to provide a microwave rapid synthesis of lead, graphite oxide doped with bismuth ferrite and foam The method and application of nickel composite material

Method used

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  • Method for microwave rapid synthesis of lead, graphite oxide doped bismuth ferrite and foam nickel composite material and application thereof
  • Method for microwave rapid synthesis of lead, graphite oxide doped bismuth ferrite and foam nickel composite material and application thereof
  • Method for microwave rapid synthesis of lead, graphite oxide doped bismuth ferrite and foam nickel composite material and application thereof

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specific Embodiment approach 1

[0029] Specific embodiment one: what this embodiment records is a kind of method for rapid microwave synthesis of lead, graphite oxide doped bismuth ferrite and nickel foam composite material, and the steps of the method are as follows:

[0030] 1. Pretreatment of bismuth ferrite-based composites

[0031] Take 4~5 g ferric nitrate, 4~5 g bismuth nitrate, 0.1~0.3 g lead nitrate, 0.5~1.0 g graphite oxide (powder) and 25~35 mL deionized water or ultrapure water and mix them in a beaker. Ultrasonic treatment at 25-30°C for 15-30 min, then add 3-5 g of sodium hydroxide and continue stirring for 20-30 min, then add 1-2 g of nickel foam, and finally move the mixture to a polytetrafluoroethylene reaction tank to be synthesized;

[0032] 2. Microwave rapid synthesis of pretreated bismuth ferrite-based composites

[0033] Place the polytetrafluoroethylene reaction tank in a microwave oven for microwave-assisted hydrothermal synthesis. After the reaction, take out the polytetrafluoroet...

specific Embodiment approach 2

[0034] Specific embodiment two: the method for rapid microwave synthesis of lead, graphite oxide doped bismuth ferrite and nickel foam composite material described in specific embodiment one, in step two, the microwave reaction temperature is 180 ~ 200 o C, the reaction time is 20-40 min.

specific Embodiment approach 3

[0035] Specific embodiment 3: The microwave rapid synthesis method of lead, graphite oxide doped with bismuth ferrite and nickel foam composite material described in specific embodiment 1, in step 2, the drying temperature is 70~100°C, and the drying time is 2 h .

[0036] Specific embodiment four: the microwave rapid synthesis method of lead described in specific embodiment one, graphite oxide doped bismuth ferrite and nickel foam composite material, in step two, use dehydrated alcohol and deionized water to carry out centrifugal cleaning, centrifugal speed The speed is 3500 rap / min, and the centrifugation time is 5 min.

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Abstract

The invention discloses a method for microwave rapid synthesis of a lead, graphite oxide doped bismuth ferrite and foam nickel composite material and application thereof, and belongs to the technical field of synthetic materials. The method is as follows: (1) preparing a ferric nitrate, bismuth nitrate, lead nitrate and graphite oxide liquid mixture, ultrasonically treating, adding sodium hydroxide and nickel foam, and continuing to stir well for standby use; (2) performing microwave assisted hydrothermal synthesis in a microwave oven, after the reaction is finished, taking a product out, cleaning, and drying to obtain the lead, graphene doped bismuth ferrite and nickel foam composite catalytic material which can be used for treatment of degradation-resistant organic wastewater in Fenton-like and photocatalytic reaction systems, and can effectively reduce the content of TOC in the wastewater. During the preparation process of the lead, graphite oxide doped bismuth ferrite and foam nickel composite material, the microwave assisted hydrothermal method is used for one-step rapid synthesis of the bismuth ferrite based composite catalytic material, the advantages of non thermal effect and in situ growth ability of microwave can be fully used, the chemical synthesis reaction can be quickly and efficiently completed, the preparation time is greatly shortened, and the operation is simple, practical and convenient.

Description

technical field [0001] The invention belongs to the technical field of synthetic materials, and in particular relates to a method and application of microwave rapid synthesis of lead, graphite oxide doped with bismuth ferrite and nickel foam composite materials. Background technique [0002] Bismuth ferrite (BiFeO 3 , BFO) is a multiferroic material, which was first successfully synthesized in the late 1950s. Because of its ferroelectricity and antiferromagnetism, it is one of the current research hotspots in multiferroic materials. The bismuth ferrite crystal structure of the perovskite structure belongs to the R3c space group at room temperature, and its structure can be tilted in anti-phase octahedron, and the ions are displaced along the [111] pseudo-cubic direction from the center of symmetry. BFO has both ferroelectricity and G-type antiferromagnetism, its ferroelectric Curie temperature is 830°C, and its antiferromagnetic Neel temperature is 370°C, and each [111] cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/843C02F1/30C02F1/72C02F101/30
CPCC02F1/30C02F1/722C02F1/725B01J23/8437B01J37/346C02F2101/30C02F2305/10C02F2305/026B01J35/39
Inventor 张广山王鹏李硕袁晓乐
Owner HARBIN INST OF TECH
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