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Catalytic electrode with phosphorus selectivity and preparation method thereof

A catalytic electrode and selectivity technology, which is applied in the field of catalytic electrode with phosphorus selectivity and its preparation, can solve the problem that no titanium-based ruthenium-based catalytic electrode material has been found, and achieve low-concentration phosphorus pollution-free degradation and high-efficiency degradation efficiency Effect

Inactive Publication Date: 2020-08-11
KUNMING UNIV
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Problems solved by technology

[0005] So far, no titanium-based ruthenium-based catalytic electrode materials have been found for the selective adsorption of phosphorus in sewage.

Method used

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  • Catalytic electrode with phosphorus selectivity and preparation method thereof

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Embodiment

[0028] This embodiment provides a kind of catalytic electrode material with phosphorus selectivity, it is characterized in that, this electrode is to form IrO by Ti substrate outwards 2 -RuO 2 Multiple transitional gradient coatings, the outermost and second outermost layers are RuO 2 Coatings doped with Ce and Ni respectively;

[0029] The RuO 2 For catalytic activity, the IrO 2 For auxiliary conduction and catalysis. RuO 2 The thickness is 1-2μm, IrO 2 The thickness is 0.5-1μm; the outermost layer is RuO 2 -CeO 2 , the second outer layer is RuO 2 -NiO(Ni 2 o 3 ) network structure with a layer thickness of 1 μm.

[0030] This embodiment provides a method for preparing a catalytic electrode material with phosphorus selectivity, comprising the following steps:

[0031] Using Ti with a thickness of 2.0mm as the substrate, the surface is activated and modified with HF to form TiH 2 activated membrane,

[0032] Ruthenium trichloride (RuCl 3 ·3H 2 O) or ammonium chl...

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Abstract

The invention mainly provides a catalytic electrode material with phosphorus selectivity. The catalytic electrode material is characterized in that the electrode is formed by forming a plurality of IrO2-RuO2 transition gradient coatings outwards from a Ti matrix, the outermost layer and the secondary outer layer are coatings respectively doped with Ce and Ni by RuO2, and the total thickness of theelectrode coating is 0.1 mm; ruO2 is a catalytic activity effect, and IrO2 is an auxiliary electric conduction and catalytic effect. The electrode has an efficient degradation effect on low-concentration soluble phosphorus, the treated effluent can reach the III-class standard of Environmental Quality Standards for Surface Water (GB3838-2002), and the technical problem of pollution-free degradation of low-concentration phosphorus in sewage can be effectively solved.

Description

technical field [0001] The invention relates to the field of semiconductor materials, in particular to a catalytic electrode with phosphorus selectivity and a preparation method thereof. Background technique [0002] Nitrogen and phosphorus are the main factors causing water eutrophication. The removal and prevention of phosphorus in sewage is one of the important directions of water environment treatment. [0003] Conventional electrochemical water treatment dephosphorization technology mainly adopts electrocoagulation method, in which iron and aluminum are used as electrodes. During the water treatment process, iron and aluminum themselves will be consumed and enter the water in the form of compounds to cause secondary pollution. [0004] In the electrocatalytic water treatment technology, the electrode does not undergo chemical reactions, so that it will not cause secondary pollution of water, and it is a clean water treatment technology. [0005] So far, no titanium-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/10
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2101/105
Inventor 戴红徐杉
Owner KUNMING UNIV
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