A controllable composition and morphology AuAg/ZnO catalyst, prepared by an easily scalable method, was, for the first time, explored for the electrocatalytic reduction of CO₂. It was found that the composition of the bimetallic alloy contributes to the overall CO₂ reduction performance. In particular, as also demonstrated by density functional theory calculations, CO production increases, decreasing the Au content in the catalyst alloy. The experimental investigation reveals that the products are H₂ and CO, which production rate increases in the presence of ZnO, up to a Faradic efficiency of 94.7 % at 0.4 V. On the other hand, controlling the oleic acid covering it is possible to modulate the surface properties allowing to obtain, at 0.6 V, H₂/CO ratios equal to 1.1 and 1.9 for nanocatalysts thermally treated for 2 and 5 h, respectively.

首次探索了通过易于扩展的方法制备的可控组成和形貌的AuAg / ZnO催化剂，用于电催化还原CO ₂。发现双金属合金的组成有助于整体CO ₂还原性能。尤其是，正如通过密度泛函理论计算所证明的那样，CO产量增加，从而降低了催化剂合金中的Au含量。实验研究表明，产物为H ₂和CO，在ZnO存在下生产率提高，在0.4 V时法拉第效率高达94.7％。另一方面，控制油酸覆盖率可以调节表面性能允许在0.6 V下获得H ₂分别热处理2小时和5小时的纳米催化剂的/ CO比分别等于1.1和1.9。