A preparation method of a Pd-BiOI / ordered mesoporous carbon electrode

By preparing Pd-BiOI/OMCs electrodes, the problems of insufficient visible light response of TiO2 photocatalysts and the difficulty of using ordered mesoporous carbon materials as electroadsorption electrodes were solved, realizing efficient pollutant degradation through synergistic electroadsorption and photocatalysis, and providing a practical basis for solar energy utilization.

CN120774525BActive Publication Date: 2026-05-29PINGDINGSHAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PINGDINGSHAN UNIVERSITY
Filing Date
2025-07-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing TiO2 photocatalysts have insufficient response to visible light and high photogenerated charge recombination rate, which limits the utilization rate of solar energy. Furthermore, ordered mesoporous carbon materials are difficult to use as electroadsorption electrodes, thus limiting their practical application.

Method used

Ordered mesoporous carbon electrodes were prepared by a low-temperature hydrothermal method. Pd-BiOI nanoparticles and BiOI nanosheets were then constructed on their surface by a combination of electrodeposition and hydrothermal methods to form Pd-BiOI/OMCs electrodes. The three-dimensional network structure of OMCs and the electrocatalytic effect of Pd were utilized to prevent electron-hole recombination and improve photocatalytic activity.

Benefits of technology

This study achieved efficient degradation of pollutants by Pd-BiOI/OMCs electrodes under visible light, improving the quantum efficiency and electroadsorption performance of the photocatalyst and providing a highly efficient pollutant degradation capability through the synergistic effect of electroadsorption and photocatalysis.

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Abstract

This invention discloses a method for preparing a Pd-BiOI / ordered mesoporous carbon electrode, comprising: step S1, preparing an ordered mesoporous carbon electrode material using a soft template method under low-temperature hydrothermal conditions; step S2, using a three-electrode system, with the ordered mesoporous carbon electrode material as the working electrode, a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, using a hydrochloric acid solution containing PdCl2 as the electrolyte, and depositing a Pd / OMCs electrode using a multi-step current pulse method; step S3, adding KI to ethylene glycol and dissolving it by magnetic stirring; then adding Bi(NO3)3•5H2O and stirring magnetically to obtain a mixture a; placing the mixture a and the Pd / OMCs electrode prepared in step S2 in a high-pressure reactor lined with polytetrafluoroethylene, and performing a hydrothermal reaction under high-temperature conditions, followed by rapid cooling after the reaction, removing the electrode and rinsing it with distilled water to obtain the Pd-BiOI / OMCs electrode. The Pd-BiOI / ordered mesoporous carbon electrode prepared by this invention has both excellent electroadsorption and visible light photocatalytic performance, and is expected to become an ideal electrode material integrating electroadsorption and photocatalysis.
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