Pd / WOx-C electrode and preparation method and application thereof

By preparing a WOx-C composite support and loading Pd, the problems of large dosage and high cost of precious metal Pd catalysts were solved, achieving low-cost and high-efficiency electrocatalytic hydrodechlorination and improving the treatment efficiency of chlorinated organic compounds.

CN122380504APending Publication Date: 2026-07-14HENAN UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610658768.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-13
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing precious metal Pd catalysts have problems in electrocatalytic dechlorination reactions, such as large amounts of precious metals, high cost, and limited ability to generate adsorbed hydrogen, making it difficult to effectively treat chlorinated organic compounds.

Method used

WOx-C composite support was prepared by hydrothermal method, and Pd was loaded by impregnation method to prepare Pd/WOx-C electrode. The amount of noble metal was optimized. Combining the high specific surface area of ​​carbon material and the electronic regulation effect of transition metal oxide WOx, the catalytic activity was improved.

Benefits of technology

High efficiency of 2,4-DCP dechlorination was achieved at ambient temperature and pressure with a Pd loading of only 0.0085 mg cm-2. It is low in cost and has high catalytic activity, with a dechlorination efficiency of up to 94.9%, which significantly improves the efficiency of electrocatalytic hydrodechlorination.

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Abstract

The invention discloses a Pd / WOx-C electrode and a preparation method and application thereof. The preparation method comprises the following steps: step 1, a WOx-C carrier synthesis step: dispersing and dissolving WCl6 and C6H12O6 in C6H14O4 to form a mixed solution; carrying out hydrothermal reaction on the mixed solution; a WOx-C composite carrier is obtained; step 2, preparation of WOx-C carrier loaded palladium: dispersing the WOx-C composite carrier prepared in the step 1 in water to obtain a solution A; na2PdCl4 is dispersed and dissolved in water, and a solution B is obtained; dropwise adding the solution B into the solution A while continuously stirring; placing the obtained mixed solution in a water bath, heating to a certain temperature, and keeping the temperature; after the reaction, the Pd / WOx-C catalyst is obtained; and step 3, preparation of a Pd / WOx-C electrode: dispersing the Pd / WOx-C catalyst prepared in the step 2 in a mixed solution, performing ultrasonic treatment, coating carbon paper with the mixed solution, and drying to prepare the Pd / WOx electrode. The WOx-C composite carrier is prepared through a hydrothermal method, a Pd loading strategy is optimized, and high dechlorination efficiency is achieved while the use amount of precious metal is reduced.
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