Systematic heterogeneous design of Cu catalysts for CO2 electroreduction towards highly value-added products

由于该项目旨在通过使用多孔材料作为支撑材料的策略来实现用于CO2还原的高效电催化剂，以提高CO2的总转化率。到目前为止，我们建立了高CO2转化率的Zr-MOF载体的Bi催化剂，用于生成甲酸。详细地说，我们成功地将UiO-66与Bi颗粒偶联，我们深入研究了在本研究期间改进的原因。根据拉曼、XPS和FTIR分析，应该增加Zr位的碳酸根浓度，从而提高Bi催化剂的CO2利用率。由于Zr-MOF在强碱性条件下的结构演变，随着电解时间的延长，CO2还原电流密度逐渐减小。因此，我们将继续解决稳定性问题，并明确活性提高的具体原因。

As this project aims to achieve efficient electrocatalysts for CO2 reduction with strategies using porous materials as supporting materials to boost total CO2 conversion. Up to now, we established high CO2 conversion with Zr-MOF support for Bi catalyst to generate formic acid production.In detail, as we successfully coupled UiO-66 with Bi particles, we deeply investigated the reason for the improvement in this research period. According to Raman, XPS and FTIR analysis, carbonate concentration should be increased at Zr site, resulting in higher CO2 utilization for Bi catalysts.However, we still have challenging issues regarding the stability. Due to Zr-MOF's structural evolution under strong alkaline condition, as the electrolysis time goes, CO2-reducing current density is gradually decreased. Thus, we are on-going to solve the stability and make clear the specific reason for improved activity.