The direct conversion of methane is still a challenge. Here, an enhanced catalyst for direct and selective oxidation of methane at low temperature was prepared by exploiting Rh single atoms, dispersed in a mixed oxides nanocomposite (based on NiO and V₂O₅). We found that the prepared nanocatalyst can catalyze the selective oxidation of CH₄ efficiently to methanol. The maximum methanol production was 5.2 μmol/hcm² (0.65 mol h⁻¹ g⁻¹) with a current efficiency of 91 %. A negligible production of CO₂ (current efficiency of 6%) was the only other product. The methanol molar fraction kept stable for at least 500 min, at 100 mA, and T = 100 °C. The comparative analysis with the literature results highlights the high efficiency of our catalyst in selectively promoting methanol production with high yields and stability, providing a novel pathway for the production of efficient catalysts based on the exploitation of single-atoms dispersed on useful surfaces.

甲烷的直接转化仍然是一个挑战。在此，通过利用分散在混合氧化物纳米复合材料（基于NiO和V ₂ O ₅）中的Rh单原子制备了用于低温下甲烷直接和选择性氧化的增强型催化剂。我们发现，所制备的纳米催化剂可以有效地催化CH ₄选择性氧化为甲醇。最大甲醇产量为5.2μmol/ hcm ²（0.65 mol h ^-1  g ^-1），电流效率为91％。产生的CO ₂可以忽略不计（当前效率为6％）是唯一的其他产品。甲醇摩尔分数在100 mA和T = 100°C的条件下保持稳定至少500分钟。与文献结果的对比分析突显了我们的催化剂在选择性地促进甲醇生产中的高效率和高收率和稳定性，为利用分散在有用表面上的单个原子的利用提供了生产高效催化剂的新途径。