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A kind of preparation method and application of nickel matrix/nickel hydroxide composite electrode

A composite electrode and substrate technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex process, low degradation efficiency, high energy consumption, etc., and achieve strong application prospects, The effect of low energy consumption and easy operation

Inactive Publication Date: 2021-05-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method and application of a nickel matrix / nickel hydroxide composite electrode for water treatment, to solve the problems of low degradation efficiency, complex process and high energy consumption although the existing catalyst has certain catalytic activity

Method used

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  • A kind of preparation method and application of nickel matrix/nickel hydroxide composite electrode
  • A kind of preparation method and application of nickel matrix/nickel hydroxide composite electrode
  • A kind of preparation method and application of nickel matrix/nickel hydroxide composite electrode

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preparation example Construction

[0021] The invention provides a preparation method and application of a nickel matrix / nickel hydroxide composite electrode. The specific steps of the preparation method are as follows:

[0022] (1) Measure a nickel substrate of a certain quality, ultrasonically clean it with acetone, ethanol, and high-purity water in sequence, place it in an oven for drying, and put it into a polytetrafluoroethylene reactor; the temperature of the oven is 60°C.

[0023] (2) Measure excessive hydrogen peroxide solution, add hydrogen peroxide solution in step (1) reactor, the reactor is placed in the oven to keep warm, take out the reactor, cool to room temperature, take out the solid product in the reactor; The temperature of the oven is 100° C. to 180° C., and the holding time is 1 to 8 hours.

[0024] (3) The solid product obtained in step (2) is ultrasonically cleaned in high-purity water, and then dried in an oven to obtain a nickel matrix / nickel hydroxide composite electrode material; the ...

Embodiment 1

[0029] The nickel substrate is nickel foam with a porosity of 110ppi and a thickness of 1.7mm. figure 1 The schematic in the clipping nickel foam. Such as figure 1 The upper picture shown above is the initially cut rectangular nickel foam with an area of ​​4cm×9cm, and then cut off the shaded part (two pieces of 1cm×4cm) as shown in the picture below to obtain the desired shape of nickel foam (corresponding to figure 1 The white part below), rolled into a cylinder from left to right to ensure a larger area when placed in a reactor for growth, ultrasonically cleaned with acetone, ethanol, and high-purity water for 10 minutes, and dried in an oven at 60°C. Weighing and obtaining quality is 1.4g nickel substrate, then puts into polytetrafluoroethylene reactor; Theoretically, 1.4g nickel is completely oxidized to divalent nickel and needs the volume of the hydrogen peroxide solution of 30% (mass percentage concentration) at least 2.4ml, the present embodiment measures 35ml mass ...

Embodiment 2

[0035] A nickel foil with a thickness of 0.8mm was selected as the nickel substrate. The sample preparation and clipping methods were the same as in Example 1. The cylindrical nickel foil sample was clipped, ultrasonically cleaned with acetone, ethanol, and high-purity water for 10 minutes, and placed in an oven at 60°C. Internal drying, weighed to obtain a mass of 1.0g, and then put it into a polytetrafluoroethylene reactor; in theory, completely oxidizing 1.0g of nickel to divalent nickel requires a volume of at least 5.2ml of 10wt.% hydrogen peroxide solution , measure 35ml of hydrogen peroxide with a mass concentration of 10% and transfer it to the reaction kettle to ensure that the hydrogen peroxide solution is excessive and completely submerge the nickel substrate. to room temperature; the obtained solid product was ultrasonically cleaned in high-purity water for 10 minutes, and dried in an oven at 60°C to obtain nickel foil / nickel hydroxide (Ni / Ni(OH) 2 ) composite elec...

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Abstract

The invention discloses a preparation method and application of a nickel matrix / nickel hydroxide composite electrode, and belongs to the technical field of electrochemical degradation of organic wastewater. The preparation method firstly cleans the nickel substrate and puts it in an oven for drying, then puts it into a reaction kettle; then adds the hydrogen peroxide solution into the reaction kettle, puts it in the oven to keep warm, cools to room temperature, and takes out the solid product in the reaction kettle ; The solid product is cleaned and placed in an oven to dry to obtain a nickel matrix / nickel hydroxide composite electrode material; it is applied to the electrocatalytic oxidation degradation of organic pollutants in water, and the energy consumption is very low, which has great advantages in practical applications. And it can be extended to the field of electrochemical degradation of organic wastewater, and has a strong application prospect. The invention proposes for the first time that the nickel matrix / nickel hydroxide composite electrode is applied to the field of electrochemical oxidation degradation of organic wastewater to achieve the goal of efficient and pollution-free treatment of organic wastewater; the preparation method is simple, efficient, highly repeatable and easy to synthesize on a large scale.

Description

technical field [0001] The invention belongs to the technical field of electrochemical degradation of organic wastewater, and in particular relates to a preparation method and application of a nickel matrix / nickel hydroxide composite electrode for water treatment. Background technique [0002] With the vigorous development of the industrial economy and the acceleration of urbanization, the water consumption has increased sharply, and the sewage discharge has also continued to increase, which has exacerbated the shortage of fresh water resources and the pollution of the water environment. Many industrial wastewaters such as dyestuffs, organic chemical synthesis and other industries contain a large amount of organic matter, which has the characteristics of high concentration, high toxicity and difficult biodegradation. Various organic compounds in wastewater are considered to be carcinogens, have great biological toxicity, cause serious water pollution, and directly or indirec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46133C02F2001/46161C02F2101/308
Inventor 刁鹏孙珊
Owner BEIHANG UNIV
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