Monatomic Ru-loaded Co3O4 hollow nanobox, preparation method and application

The invention discloses a monatomic Ru-loaded Co3O4 hollow nano box material as well as a preparation method and application thereof. The activity of Co3O4 is improved through a monatomic Ru-loaded Co3O4 hollow nano box, a cobalt-based metal organic framework (ZIF-67) nano cube is used as a template, and the monatomic Ru-loaded Co3O4 hollow nano box material with high stability and high nitrate reduction ammonia production activity is prepared through a series of processes such as tannic acid etching, Ru ion exchange and further calcination. The catalyst is used for reducing nitrate to prepare ammonia, and has excellent ammonia preparation performance; and the stability is excellent. 本发明公开了一种单原子Ru负载的Co3O4中空纳米盒材料及其制备方法和应用。本发明通过单原子Ru负载Co3O4中空纳米盒来提高Co3O4的活性，以钴基金属有机框架(ZIF-67)纳米立方块为模板，经过单宁酸刻蚀、Ru离子交换、再进一步煅烧等一系列过程，制备了具有高稳定性、高硝酸根还原制氨活性的单原子Ru负载的Co3O4中空纳米盒材料。其用于还原硝酸根制氨，具有优异的制氨性能；且具有优异的稳定性。