A new ringlike V₂O₃ architecture was successfully synthesized by a template-free hydrothermal method, and the sulfur ions-assisted central-etching mechanism of the ringlike structure was proposed. Herein, as a proof-of-concept experiment, taking V₂O₃ nanorings as non-noble-metal-free nitrogen reduction reaction (NRR) catalysts, they show desired electrocatalytic performance toward NRR under ambient conditions (maximum yield: 47.2 µg h⁻¹ mg_cat.⁻¹ at −0.6 V vs. reversible hydrogen electrode, maximum Faraday efficiency: 12.5% at −0.5 V vs. reversible hydrogen electrode), which is significantly higher than those of noble metal-based catalysts.

采用无模板水热法成功合成了新型的环状V ₂ O ₃结构，并提出了硫离子辅助的环状结构中心腐蚀机理。在此，作为概念验证实验，以V ₂ O ₃纳米环为非无贵金属的氮还原反应（NRR）催化剂，它们在环境条件下对NRR表现出所需的电催化性能（最大产量：47.2 µg h相对于可逆氢电极，在-0.6 V时为^-1 mg _cat ^-1，最大法拉第效率：相对于可逆氢电极，在-0.5 V时为最大法拉第效率：12.5％，其显着高于贵金属基催化剂。