In this paper, cobalt-doped graphitic carbon nitride composite photocatalyst (CoCNx) was prepared by a simple high temperature calcination approach. The catalytic activation performance of the catalyst for PMS was measured with ofloxacin as the simulated pollutant under solar light irradiation, and the effects of the amount of catalyst, PMS concentration and the initial concentration of ofloxacin on the activation performance were investigated. The results showed that CoCNx showed the higher catalytic activity for ofloxacin, and the degradation rate of ofloxacin (50 mg/L) in the CoCN10/PMS system reached 83.4% after 1 h of sunlight exposure, which was 3.4 of that in the CN/PMS system. The free radical quenching experiment showed that sulfate radical (SO₄^•−) was the main active species in the CoCN10/PMS system. Cobalt doped graphite carbon nitride exhibits great potential for application in the degradation of environmental pollutants.

在本文中，通过简单的高温煅烧方法制备了钴掺杂的石墨氮化碳复合光催化剂（CoCNx）。以氧氟沙星为模拟污染物，在太阳光照射下测定了催化剂对PMS的催化活化性能，考察了催化剂用量、PMS浓度和氧氟沙星初始浓度对活化性能的影响。结果表明，CoCNx对氧氟沙星表现出较高的催化活性，日光照射1 h后，CoCN10/PMS体系中氧氟沙星（50 mg/L）的降解率为83.4%，是CN/PMS体系中的3.4%。 PMS 系统。自由基猝灭实验表明硫酸根(SO ₄ ^•-) 是 CoCN10/PMS 系统中的主要活性物质。钴掺杂石墨碳氮化物在降解环境污染物方面具有巨大的应用潜力。