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Method for preparing stainless steel-based micro-nano array beta-PbO2 anode material

An anode material, stainless steel technology, applied in chemical instruments and methods, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve problems such as low electrocatalytic efficiency

Active Publication Date: 2019-03-29
KUNMING UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem of low electrocatalytic efficiency of metal oxide lead dioxide anode materials in the prior art, the present invention provides a stainless steel-based micro-nano array β-PbO 2 The preparation method of the anode material, in the present invention, the stainless steel plate is used as the substrate to electrodeposit β-PbO 2 layer, on stainless steel based β-PbO 2 The pore size is monodispersed on the layer, the pore aspect ratio is high, the pore channel distribution is uniform, the pore density is high, the amphoteric oxide is used for the pores to be easily removed, the pore channels are parallel to each other and perpendicular to the surface of the substrate, and the pores are independent from each other and will not be affected by the pores. AAO template with staggered pores and strong controllable pore size due to inclination, electrodeposited β-PbO in the micropores of AAO template by electrodeposition method 2 Micro-nano wires, stainless steel-based micro-nano arrays β-PbO obtained by chemically dissolving AAO templates 2 Anode material

Method used

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  • Method for preparing stainless steel-based micro-nano array beta-PbO2 anode material
  • Method for preparing stainless steel-based micro-nano array beta-PbO2 anode material
  • Method for preparing stainless steel-based micro-nano array beta-PbO2 anode material

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Embodiment 1

[0043] Embodiment 1: as image 3 As shown, a stainless steel-based micro-nano array β-PbO 2 The method for anode material, concrete steps are as follows:

[0044] (1) In electrolyte A, the stainless steel plate was used as the substrate, and β-PbO was electrodeposited on the stainless steel plate substrate by the constant current electrodeposition method 2 layer to obtain stainless steel-based β-PbO 2 layer; wherein the constant current electrodeposition method adopts a double-cathode system, the cathode is a stainless steel plate, an aluminum plate, a lead plate or a platinum plate, the pH value of the electrolyte A is 3, and the electroplating solution A is Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 Electrolyte, Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 The electrolyte contains Pb(NO 3 ) 2 190.0g / L, NaF 0.5g / L, Cu(NO 3 ) 2 15.0g / L; The constant current electrodeposition method includes a constant current electrodeposition and a second constant current electrodeposition, the temperature ...

Embodiment 2

[0053] Embodiment 2: as image 3 As shown, a stainless steel-based micro-nano array β-PbO 2 The method for anode material, concrete steps are as follows:

[0054] (1) In electrolyte A, the stainless steel plate was used as the substrate, and β-PbO was electrodeposited on the stainless steel plate substrate by the constant current electrodeposition method 2 layer to obtain stainless steel-based β-PbO 2 The constant current electrodeposition method adopts a double-cathode system, the cathode is a stainless steel plate, an aluminum plate, a lead plate or a platinum plate, the pH value of the electrolyte A is 1, and the electroplating solution A is Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 Electrolyte, Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 The electrolyte contains Pb(NO 3 ) 2 210.0g / L, NaF 1.0g / L, Cu(NO 3 ) 2 20.0g / L; The constant current electrodeposition method includes a constant current electrodeposition and a second constant current electrodeposition, the temperature of the first co...

Embodiment 3

[0064] Embodiment 3: as image 3 As shown, a stainless steel-based micro-nano array β-PbO 2 The method for anode material, concrete steps are as follows:

[0065] (1) In electrolyte A, the stainless steel plate was used as the substrate, and β-PbO was electrodeposited on the stainless steel plate substrate by the constant current electrodeposition method 2 layer to obtain stainless steel-based β-PbO 2 The constant current electrodeposition method adopts a double-cathode system, the cathode is a stainless steel plate, an aluminum plate, a lead plate or a platinum plate, the pH value of the electrolyte A is 2, and the electroplating solution A is Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 Electrolyte, Pb(NO 3 ) 2 -NaF-Cu(NO 3 ) 2 The electrolyte contains Pb(NO 3 ) 2 180.0g / L, NaF 0.5g / L, Cu(NO 3 ) 2 15.0g / L; The constant current electrodeposition method includes a constant current electrodeposition and a second constant current electrodeposition, the temperature of the first co...

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Abstract

The invention discloses a method for preparing a stainless steel-based micro-nano array beta-PbO2 anode material, and belongs to the technical field of metal oxide lead dioxide anode materials. The method comprises the following steps that a stainless steel plate is used as a base body for electrodeposition of a beta-PbO2 layer, an AAO template is prepared on a stainless steel-based beta-PbO2 layer, the AAO template is characterized in that the hole diameter is monodisperse, the hole length-diameter ratio is high, hole ways are distributed uniformly, the hole density is high, hole amphoteric oxide is convenient to remove, the hole ways are parallel to one another and perpendicular to the surface of a base plate, holes are independent from one another, the holes are prevented from being intersected due to hole inclination, and the controllability of the hole diameter is high, a beta-PbO2 nanowire is electrodeposited in microholes of the AAO template through an electrodeposition method,and the stainless steel-based micro-nano array beta-PbO2 anode material is obtained by dissolving the AAO template through a chemical method. The anode material prepared through the method has the advantageous performances that the stability is good, the corrosion resistance is high, the oxidizability is high, the service life is long, the conductivity is high, a large current can be conducted, the micro-nano array of the anode material has controllability, an electrochemical active surface area of an electrode can be effectively expanded, and the electrocatalysis performance can be improved.

Description

technical field [0001] The invention relates to a stainless steel-based micro-nano array β-PbO 2 The invention discloses a method for preparing an anode material, belonging to the technical field of metal oxide lead dioxide anodes. Background technique [0002] With the rapid development of the dye industry, while improving the quality of human life, it also forces the entire human society to face a huge water resource challenge. Dye wastewater has become one of the key pollution sources of the water environment. China is one of the first countries in the world to use dyes. In recent years, my country's annual discharge of dye wastewater has reached several billion tons. As we all know, most of the dyes contained in dye wastewater are aromatic compounds, among which azo dyes account for the largest proportion, which can decompose and release more than 20 kinds of carcinogenic aromatic amine compounds. Therefore, azo dye wastewater is recognized as the most difficult to deg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/10C25D3/44C25D11/12C25D11/24C02F1/461
CPCC25D3/44C25D9/10C25D11/12C25D11/24C02F1/46109C02F2001/46142
Inventor 陈阵宋钰珠余强朱微桂来吴丹郑涛常鸿英
Owner KUNMING UNIV OF SCI & TECH
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