Preparing method and application of nickel matrix/nickel hydroxide composite electrode

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

Inactive Publication Date: 2018-09-21
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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  • Preparing method and application of nickel matrix/nickel hydroxide composite electrode
  • Preparing method and application of nickel matrix/nickel hydroxide composite electrode
  • Preparing 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 preparing method and application of a nickel matrix / nickel hydroxide composite electrode, and belongs to the technical field of electrochemical degradation of organic wastewater. The preparing method comprises the steps of firstly, putting a nickel matrix into a drying oven to be dried after the nickel matrix is cleaned, and then putting the dried nickel matrix into a reaction kettle; then adding a hydrogen peroxide solution into the reaction kettle, putting the reaction kettle into the drying oven for heat preservation, and cooling to the room temperature to take outa solid product in the reaction kettle; putting the solid product into the drying oven to be dried after the solid product is cleaned, and obtaining a nickel matrix / nickel hydroxide composite electrode material. The nickel matrix / nickel hydroxide composite electrode is applied to electrocatalysis-oxidative degradation of organic pollutants in water, is very low in energy consumption, has great advantages in the aspect of practical application, can be popularized to the field of electrochemical degradation of organic wastewater, and has a bright application prospect. It is put forward for thefirst time that the nickel matrix / nickel hydroxide composite electrode is applied to the field of electrochemical and oxidative degradation of the organic wastewater, and the aim of efficient and pollution-free treatment on the organic wastewater is achieved; the preparing method is easy to operate, efficient, high in repeatability 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 Applications(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46133C02F2001/46161C02F2101/308
Inventor 刁鹏孙珊
Owner BEIHANG UNIV
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