Device for photoelectrocatalytic reduction of carbon dioxide

Abstract

The invention discloses a device for photoelectrocatalytic reduction of carbon dioxide. The device comprises a photocatalytic reactor, an electrochemical workstation and a light source lamp arranged outside the photocatalytic reactor; the photocatalytic reactor comprises a photocatalytic reactor, an electrocatalytic reactor, a working electrode, a counter electrode, a reference electrode, a sampleinjection port and a quartz glass window, that photocatalytic reactor and the electrocatalytic reactor are connected through the working electrode, a quartz glass window is arranged on the side of the photocatalytic reactor away from the electrocatalytic reactor, the quartz glass window is correspondingly arranged with the light source lamp, a sample injection port is arranged on the photocatalytic reactor and the electrocatalytic reactor, and the reference electrode and the counter electrode are arranged on the electrocatalytic reactor; the working electrode, the counter electrode and the reference electrode are respectively connected with the electrochemical workstation. The invention can improve the catalytic reduction reaction efficiency of carbon dioxide.

Description

technical field [0001] The invention relates to the field of carbon dioxide reduction, in particular to a photoelectric catalytic reduction device for carbon dioxide. Background technique [0002] Photoelectrocatalytic reduction technology as a new CO 2 The key factor for the practical application of control technology is whether an efficient and economical photocatalytic reactor can be designed. From the perspective of high efficiency and stability, attention should be paid to whether the structural design of the photoelectric catalytic reactor is innovative, mainly including the optimization of the material of the reactor, the shape of the reactor, the arrangement of electrode materials, the way of illumination, the way of air intake and the collection of products. . In the process of exploring the operation of the reactor, some problems were found by looking for the best operating conditions and detecting the produced products, mainly as follows: [0003] (1) The posit...

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Problems solved by technology

[0004] (2) The material of the working electrode is unstable and cannot be reused, and the experimental results cannot be reproduced well

[0005] (3) The reactor cannot be directly connected to the gas chromatograph, and the analysis method of online sampling cannot be realized

[0006] Generally speaking, the research on photoelectrocatalysis of carbon dioxide lacks excellent and reasonable reactors, and it is necessary to find a reasonable and efficient catalyst for carbon dioxide photocatalysis experiments, and gradually improve the photocatalytic efficiency of carbon dioxide.

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