Graphene-doped and lanthanum-modified titanium-based lead dioxide electrode and preparation method thereof

A lead dioxide and graphene technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of complicated manufacturing process, and achieve the effect of improving electrocatalytic performance, improving electrocatalytic activity, and improving service life

Active Publication Date: 2016-01-13
陕西恒悦材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Contains α-PbO 2 The introduction of the middle layer of the titanium-based lead dioxide electrode effectively enhances the stability of the titanium-based lead dioxide electrode, but at the same time complicates its manufacturing process and inhibits the improvement of the finished product qualification rate of the titanium-based lead dioxide electrode product.

Method used

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  • Graphene-doped and lanthanum-modified titanium-based lead dioxide electrode and preparation method thereof
  • Graphene-doped and lanthanum-modified titanium-based lead dioxide electrode and preparation method thereof
  • Graphene-doped and lanthanum-modified titanium-based lead dioxide electrode and preparation method thereof

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Embodiment 1

[0042] 1# titanium-based lead dioxide electrode doped with graphene and lanthanum modified, refer to figure 1 , its specific structure includes:

[0043] Titanium substrate 1;

[0044] Tin antimony oxide bottom layer 2 thermally deposited on a titanium substrate;

[0045] Electrodeposition of graphene and lanthanum-modified β-PbO on tin antimony oxide underlayer 2 active layer 3.

[0046] In this embodiment, titanium wire is used as the titanium substrate.

[0047] The specific preparation method of 1# doped graphene and lanthanum-modified titanium-based lead dioxide electrode is as follows:

[0048] (1) Pretreatment of the titanium substrate: use titanium wire as the titanium substrate, firstly use coarse sandpaper to polish the titanium wire until it presents a silvery white metallic light, rinse it with deionized water; place the polished titanium wire Ultrasonic treatment in acetone for 4 minutes to remove oil stains; then place the degreased titanium wire in deionize...

Embodiment 2

[0071] 2# graphene-doped and lanthanum-modified titanium-based lead dioxide electrode, which has the same structure as the 1# graphene-doped and lanthanum-modified titanium-based lead dioxide electrode in Example 1.

[0072] In this embodiment, titanium wire is used as the titanium substrate.

[0073] The specific preparation method of 2# doped graphene and lanthanum-modified titanium-based lead dioxide electrode is as follows:

[0074] (1) pretreatment of titanium substrate: same as the pretreatment step of embodiment 1;

[0075](2) thermally deposited tin antimony oxide bottom layer: the same as the step of the thermally deposited tin antimony oxide bottom layer of embodiment 1;

[0076] (3) Electrodeposition of graphene and lanthanum-modified β-PbO 2 Active layer: The above-mentioned titanium substrate thermally deposited with a bottom layer of tin antimony oxide is used as an anode, and graphite with an equal area is used as a cathode, and β-PbO is electrodeposited in an...

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Abstract

The invention discloses a graphene-doped and lanthanum-modified titanium-based lead dioxide electrode which comprises a titanium base body, a tin-antimony oxide bottom layer deposited on the titanium base body in a hydrothermal mode, graphene deposited on the tin-antimony oxide bottom layer in an electrolytic mode, and a lanthanum-modified beta-PbO2 active layer. Compared with the prior art, the titanium-based lead dioxide electrode at least can improve removal effect of methyl orange by 15.6% in case of keeping service life of the titanium-based lead dioxide electrode. The invention further discloses a preparation method for the titanium-based lead dioxide electrode. The preparation method comprises the following step: depositing the beta-PbO2 active layer in an acidic deposition liquid by taking the titanium base body which is deposited with the tin-antimony oxide bottom layer in the hydrothermal mode as an anode and taking equal-area graphite as a cathode, wherein the acidic deposition liquid comprises graphene, lanthanum nitrate, lead, nitrate, nitric acid and a surfactant. According to the preparation method, a preparation process for an alpha-PbO2 layer is cancelled, the preparation method for the titanium-based lead dioxide electrode is simplified, and foundation is laid for increasing a finished product qualified rate of an electrode product.

Description

technical field [0001] The invention is an electrochemical water treatment technology, and relates to the technical field of electrocatalytic oxidation and water treatment, in particular to a titanium-based lead dioxide electrode modified with graphene and lanthanum and a preparation method thereof. Background technique [0002] Electrocatalytic oxidation has the advantages of less consumption of chemical reagents and convenient operation and control. As a typical representative of insoluble anodes, titanium-based lead dioxide electrodes are currently recognized as electrocatalytic electrodes with great advantages. Titanium-based lead dioxide electrodes have high oxygen evolution potential, strong oxidation ability and corrosion resistance when electrolyzed in aqueous solution. Good, good conductivity, can pass a large current and other characteristics, so it was used as an insoluble anode in the electrolysis industry a long time ago. At present, titanium-based lead dioxide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/10C25D9/06
Inventor 孙凤梅赵春宝陈和祥徐随春
Owner 陕西恒悦材料科技有限公司
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