Electrochemical N₂ reduction is developing as an appealing carbon-neutral strategy for NH₃ artificial synthesis but seriously influenced by requiring high-efficiency electrocatalysts for the N₂ activation at ambient conditions. Here, we reported that defective-rich ZnS nanoparticles supported on reduced graphene oxide (DR ZnS-rGO) acts as a high-efficiency electrocatalyst for ambient N₂-to-NH₃ conversion with excellent selectivity. In 0.1 M HCl, such DR ZnS-rGO presents a large NH₃ yield of 51.2 μg h^–1 mg_cat.^–1 (−0.15 V vs. reversible hydrogen electrode, RHE) and a high faradic efficiency of 28.2 % (−0.10 V vs. RHE), as well as high electrochemical and structure stability. Isotopic labelling samples experiments reveal that the synthetic NH₃ directly arise from the supplied N₂. Density functional theory calculations demonstrated that the engineering S vacancies in DR ZnS-rGO not only provide reaction sites for N₂-to-NH₃ conversion but activate of N₂ molecules.

电化学还原N ₂已作为一种有吸引力的碳中和策略用于NH ₃人工合成，但受到环境条件下N ₂活化所需的高效电催化剂的严重影响。在这里，我们报道了还原氧化石墨烯（DR ZnS-rGO）上负载的富缺陷的ZnS纳米颗粒作为一种高效电催化剂，具有出色的选择性，可用于环境N _2-向NH _3的转化。在0.1 M HCl中，此类DR ZnS-rGO的NH ₃产量为51.2μgh ^–1 mg _cat。^–1（-0.15 V与。可逆氢电极（RHE），法拉第效率高达28.2％（相对于RHE为-0.10 V ），以及较高的电化学和结构稳定性。同位素标记样品实验表明，合成的NH ₃直接来自所供应的N ₂。密度泛函理论计算表明，DR ZnS-rGO中的工程空位不仅提供了从N ₂到NH ₃转化的反应位点，而且激活了N ₂分子。