Co-NGO光催化剂、三相光催化流动反应器及光催化CO2还原方法

By using a Co-NGO photocatalyst and a three-phase photocatalytic flow reactor, the problems of catalyst adsorption of CO2 and mass transfer limitation were solved, achieving efficient and selective CO2 reduction. The CO yield and selectivity were significantly improved, and the results remained stable during long-term testing.

CN118142590BActive Publication Date: 2026-07-17SHANDONG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Filing Date
2024-02-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing photocatalytic CO2 reduction technologies, catalysts struggle to efficiently adsorb CO2 molecules, mass transfer is limited, reaction kinetics are slow, and the sealed three-phase reaction system is prone to reabsorption and side reactions, leading to performance degradation.

Method used

By employing a Co-NGO photocatalyst and a three-phase photocatalytic flow reactor, a flow reaction system of reactants and products is constructed by providing a high concentration of CO2 supply and product discharge on the catalyst surface, thereby achieving efficient carrier separation and selective CO2 reduction.

Benefits of technology

Efficient and selective CO2 reduction was achieved, with a CO yield of 234.6 μmol g⁻¹h⁻¹ and a selectivity of 97.8%. The CO2 reduction also maintained stability during long-term testing and reduced the activation energy of the reaction.

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Abstract

本发明属于光催化技术领域,具体涉及Co‑NGO光催化剂、三相光催化流动反应器及光催化CO2还原方法。本发明提供了一种具有合适的价带和导带、具有高效载流子分离效率的Co‑NGO光催化剂,并提供了一种气‑液‑固三相光催化流动器,构建了反应物和生成物以恒定流速运动的流动反应体系,不仅在催化剂表面提供了高浓度的CO2供应,而且保证了产物的及时排出,最大限度地暴露活性位点,实现了高效率及选择性的光催化CO2还原。
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