Over the past decade, there has been significant research of Co₃O₄ catalysts for oxidation of carbon mono-oxide (CO) at low temperatures. However, development of water-resistant Co₃O₄ materials is still challenging. In this work, a novel oxygen vacancy-rich nitrogen-doped Co₃O₄ catalyst was developed using straightforward urea-assisted method. Nitrogen doping increases oxygen vacancies on the surface in Co₃O₄ as well as improves the activity of lattice oxygen. Comparing with pure Co₃O₄ and Co₃O₄ with less nitrogen doping, the as-synthesized nitrogen-doped Co₃O₄ exhibited significantly enhanced activity as well as water resistance in the catalytic oxidation of CO. To the best of our knowledge, this is the first example of CO oxidation on N-doped Co₃O₄, which provides a new strategy for developing highly active and water-resistant catalysts.

在过去的十年中，已经进行了用于低温氧化一氧化碳（CO）的Co ₃ O ₄催化剂的大量研究。然而，耐水的Co ₃ O ₄材料的开发仍然具有挑战性。在这项工作中，使用简单的尿素辅助方法开发了一种新型的富氧空位氮掺杂的Co ₃ O ₄催化剂。氮掺杂增加了Co ₃ O _4中表面的氧空位，并提高了晶格氧的活性。与纯Co ₃ O ₄和Co ₃ O _4相比用更少的氮掺杂，所合成的氮掺杂的钴₃ ö ₄表现出显著增强的活性以及耐水性在CO的催化氧化据我们所知，这是CO氧化的上的第一个例子。ñ -掺杂的Co ₃ O ₄，为开发高活性和耐水性催化剂提供了新的策略。