Copper-based nano material for electrocatalytic reduction of carbon dioxide and preparation method thereof
A nanomaterial, carbon dioxide technology, applied in the field of material science and electrocatalysis, can solve the problem of single product selectivity, and achieve the effect of being suitable for large-scale production, novel structure and high purity
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Embodiment 1
[0032] In this example, copper-based nanomaterials were prepared in a two-electrode electrolytic cell system through an electrochemical anodic oxidation-cathode deposition process. The specific steps are as follows:
[0033] 1. Use a size of 2cm respectively 2 High-purity metal copper foil and carbon paper are used as the anode and cathode of the electrolytic cell, and the distance between the two electrodes is 3cm. Use 3mol / L potassium hydroxide aqueous solution as the electrolyte, and react for 0.5 hours under the condition of an applied voltage of 1.5V;
[0034] 2. Immediately after the reaction is over, take out the carbon paper of the cathode, wash it several times with deionized water, and then use N 2 The carrier is blown dry with an air gun to obtain copper-based nanomaterials.
[0035] figure 1 The SEM image of the target product obtained in this example shows that the product is irregular nanoparticles stacked together, and the particle size is 50-100nm.
Embodiment 2
[0037] In this example, copper-based nanomaterials were prepared in a two-electrode electrolytic cell system through an electrochemical anodic oxidation-cathode deposition process. The specific steps are as follows:
[0038] 1. Use a size of 2cm respectively 2 High-purity metal copper foil and carbon paper are used as the anode and cathode of the electrolytic cell, and the distance between the two electrodes is 3cm. Use 3.5mol / L potassium hydroxide aqueous solution as the electrolyte, and react for 0.5 hours under the condition of an applied voltage of 1.6V;
[0039] 2. Immediately after the reaction is over, take out the carbon paper of the cathode, wash it several times with deionized water, and then use N 2 The carrier is blown dry with an air gun to obtain copper-based nanomaterials.
[0040] figure 2 This is the SEM image of the target product obtained in this example. It can be seen that the product is octahedral particles stacked into a nano-mulberry structure, and ...
Embodiment 3
[0042] In this example, copper-based nanomaterials were prepared in a two-electrode electrolytic cell system through an electrochemical anodic oxidation-cathode deposition process. The specific steps are as follows:
[0043] 1. Use a size of 2cm respectively 2 High-purity metal copper foil and carbon paper are used as the anode and cathode of the electrolytic cell, and the distance between the two electrodes is 3cm. Use 4mol / L potassium hydroxide aqueous solution as the electrolyte, and react for 0.5 hours under the condition of an applied voltage of 1.7V;
[0044]2. Immediately after the reaction is over, take out the carbon paper of the cathode, wash it several times with deionized water, and then use N 2 The carrier is blown dry with an air gun to obtain copper-based nanomaterials.
[0045] image 3 This is the SEM picture of the target product obtained in this example. It can be seen that the product is a nano mulberry structure with cubic particles stacked, and the par...
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