Bimetallic palladium (Pd) and tin (Sn) catalysts were electrochemically deposited on stainless steel mesh support by controlling the metal deposition sequence, total electrical charge, and metal composition. Results showed that the preparation procedure affected the crystal structure of bimetallic Pd-Sn catalysts, which significantly influenced nitrate removal efficiency and dinitrogen selectivity. Electrode with Sn on the outside surface exhibited relatively greater nitrate removal rate constant and nitrate conversion. The Sn to Pd molar ratio and the electrical charge applied during electrode preparation also affected the nitrate reduction performance. The SS/Sn_0.2Pd_0.8-497 electrode exhibited 88, 89, 79, and 9% of total nitrate removal, dinitrogen selectivity, dinitrogen yield, and NH₄⁺ selectivity, respectively. Among the three major facets, (214), (131) and (420) of Sn₃Pd alloy on the electrode surface, (420) exhibited the most critical effect on the dinitrogen yield. Crystal structure of catalysts controls the reactivity and selectivity of electrochemical reduction as exemplified by nitrate.

通过控制金属沉积顺序，总电荷和金属组成，将双金属钯（Pd）和锡（Sn）催化剂电化学沉积在不锈钢网载体上。结果表明，制备工艺对双金属Pd-Sn催化剂的晶体结构有影响，对硝酸盐的去除效率和二氮选择性有显着影响。外表面含锡的电极表现出相对较高的硝酸盐去除速率常数和硝酸盐转化率。锡与钯的摩尔比以及电极制备过程中施加的电荷也影响硝酸盐的还原性能。SS / Sn _0.2钯_0.8-497电极分别具有88％，89％，79％和9％的总硝酸盐去除率，二氮选择性，二氮收率和NH ₄ ⁺选择性。在电极表面上的Sn ₃ Pd合金的三个主要方面（214），（131）和（420）中，（420）对二氮收率表现出最关键的影响。催化剂的晶体结构控制电化学还原的反应性和选择性，例如硝酸盐。