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Preparation method of bismuth oxychloride graphite composite electrode material

A technology of bismuth oxychloride and composite electrode is applied in chemical instruments and methods, separation methods, water/sludge/sewage treatment and other directions, which can solve the problems of difficult removal and great harm, achieve low cost, reduce operating energy consumption, The effect of enhancing the speed of electron transfer

Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although chloride ion is the most typical, the highest content, the most harmful, and the most difficult to remove anion in saline wastewater, so far, the anode Cl - The research on ion intercalation reaction is rarely reported

Method used

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  • Preparation method of bismuth oxychloride graphite composite electrode material
  • Preparation method of bismuth oxychloride graphite composite electrode material
  • Preparation method of bismuth oxychloride graphite composite electrode material

Examples

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Effect test

Embodiment 1

[0032] as attached figure 1 Shown, a kind of preparation method of bismuth oxychloride graphite composite electrode material, concrete steps are:

[0033] (1) Get a cleaned Gp graphite plate (50mm * 50mm, 60mm * 80mm, 1mm) and etch it in 50ml 10% dilute nitric acid solution for 8 hours under the condition of heating in a water bath at 80°C;

[0034] (2) The above-mentioned etched graphite plate is cleaned in ethanol and deionized water, and put into a drying oven to dry for 3 hours at 40° C. for subsequent use;

[0035] (3) Dissolve 0.24g Bi(NO3) 3 5H2O and 0.04g KCl and 0.01g dispersant (hexadecyltrimethylammonium bromide) in 20ml ethylene glycol at room temperature, and fully stir , moved into a sealed container as a bismuth oxychloride loading agent;

[0036] (4) Put the above-mentioned dried graphite plate into the 50ml Teflon liner of the autoclave, and move the spare bismuth oxychloride loading agent into the autoclave, after the autoclave is sealed, place it in the dr...

Embodiment 2

[0041] as attached figure 1 Shown, a kind of preparation method of bismuth oxychloride graphite composite electrode material, concrete steps are:

[0042] (1) Get a cleaned Gp graphite plate (50mm * 50mm, 60mm * 80mm, 1mm) and etch it in 50ml 20% dilute nitric acid solution for 8 hours under the condition of heating in a water bath at 100°C;

[0043] (2) The above-mentioned etched graphite plate is cleaned in ethanol and deionized water, and put into a drying oven to dry for 3 hours at 40° C. for subsequent use;

[0044] (3) Dissolve 0.24g Bi(NO3)3 5H2O, 0.04g KCl and 0.01g dispersant (polyvinylpyrrolidone) in 20ml ethylene glycol at room temperature, stir well, and transfer to a sealed container for use as Bismuth oxychloride loading agent;

[0045] (4) Put the above-mentioned dried graphite plate into the 50ml Teflon liner of the autoclave, and move the spare bismuth oxychloride loading agent into the autoclave, after the autoclave is sealed, place it in the drying box He...

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Abstract

The invention discloses a preparation method of a bismuth oxychloride graphite composite electrode material. The preparation method comprises the following steps: firstly, putting a graphite plate into an etching solution for chemical etching; then cleaning and drying; dissolving bismuth nitrate pentahydrate, potassium chloride and a dispersing agent into ethylene glycol at room temperature, stirring, and transferring into a container to serve as a bismuth oxychloride loading agent for later use; putting the dried graphite plate into a reaction kettle, transferring the bismuth oxychloride loading agent for later use into the reaction kettle, putting the reaction kettle into a drying box for water bath heating, promoting bismuth ions to hydrolyze under the participation of chloride ions at high temperature, and forming bismuth oxychloride crystal nucleuses on the surface of the graphite plate; taking out the reaction kettle, cooling, and washing the graphite plate loaded with the bismuth oxychloride crystal nucleus until only one layer of firmly loaded bismuth oxychloride is left; and drying in a drying oven to obtain the bismuth oxychloride graphite electrode composite material. According to the preparation method, the bismuth oxychloride powder which is difficult to load originally is uniformly and completely loaded on the graphite plate by utilizing a hydrothermal method, and the chemical adsorption activity of the loaded material is maintained to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrode materials, and relates to a method for preparing bismuth oxychloride by a hydrothermal method, in particular to a method for preparing a bismuth oxychloride graphite composite electrode material. Background technique [0002] With the improvement of environmental laws and regulations and the strengthening of people's awareness of civilization, water conservation and emission reduction, advanced treatment and reuse of wastewater have become the basic strategy for sustainable development. For wastewater with a high concentration of inorganic salts (such as circulating cooling water sewage; coal-fired system desulfurization and denitrification wastewater; electrodialysis, reverse osmosis concentrated water; ion exchanger regeneration wastewater; inorganic chemical recrystallization wastewater, etc.), no feasible technology has been found so far. , Economical and reasonable, easy to o...

Claims

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Application Information

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IPC IPC(8): C02F1/469
CPCC02F1/4691
Inventor 陈春钰周建康门丽娟刘安于思洋居殿春
Owner JIANGSU UNIV OF SCI & TECH
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