Yin Chaochuang, Liu Yanan, Xia Qineng, Kang Shifei, Li Xi, Wang Yangang, Cui Lifeng
Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China.
J Colloid Interface Sci. 2019 Oct 1;553:427-435. doi: 10.1016/j.jcis.2019.06.046. Epub 2019 Jun 15.
Over the past decade, there has been significant research of CoO catalysts for oxidation of carbon mono-oxide (CO) at low temperatures. However, development of water-resistant CoO materials is still challenging. In this work, a novel oxygen vacancy-rich nitrogen-doped CoO catalyst was developed using straightforward urea-assisted method. Nitrogen doping increases oxygen vacancies on the surface in CoO as well as improves the activity of lattice oxygen. Comparing with pure CoO and CoO with less nitrogen doping, the as-synthesized nitrogen-doped CoO 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 CoO, which provides a new strategy for developing highly active and water-resistant catalysts.
在过去十年中，人们对用于一氧化碳（CO）低温氧化的氧化钴（CoO）催化剂进行了大量研究。然而，开发耐水的CoO材料仍然具有挑战性。在这项工作中，通过简单的尿素辅助方法制备了一种新型的富含氧空位的氮掺杂CoO催化剂。氮掺杂增加了CoO表面的氧空位，并提高了晶格氧的活性。与纯CoO和低氮掺杂的CoO相比，所制备的氮掺杂CoO在催化氧化CO方面表现出显著增强的活性和耐水性。据我们所知，这是氮掺杂CoO上CO氧化的首个实例，为开发高活性和耐水催化剂提供了新策略。
