锰(Mn)钴(Co)双金属负载石墨相氮化碳活化过硫酸盐用于非自由基主导的高级氧化(AOP)降解污染物研究  

Cobalt manganese oxide supported graphite phase carbon nitride activated persulfate for nonradical dominated advanced oxidation degradation of pollutants

作　　者：庄立恒 毛辉麾[1] 范郑洋 王桂灵 葛吕洁 桂豪冠 ZHUANG Li-heng;MAO Hui-hui;FAN Zheng-yang;WANG Gui-ling;GE Lv-jie;GUI Hao-guan(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《现代化工》2024年第7期180-185,共6页Modern Chemical Industry

基　　金：常州市社会发展项目(CE20235038)。

摘　　要：采用两步煅烧法成功制备了钴锰双金属氧化物负载的石墨相氮化碳(CMCN)。锰氧化物主要以Mn3O4和MnCO3形式存在,钴氧化物以CoO形式存在。由于g-C_(3)N_(4)的存在,金属Mn和Co都分布均匀没有出现团聚现象。XPS表征结果表明,Co和Mn都具有2个价态存在于CMCN中,并且保持了g-C_(3)N_(4)的结构单元。通过对罗丹明B降解评估催化剂CMCN的催化降解性能。结果表明,在Mn和Co的协同作用下,罗丹明B降解率在1 min可达到99%以上。电子顺磁共振和淬灭试验表明,非自由基氧化(1O2)在罗丹明B降解过程中占主导地位。Cobalt manganese oxides supported graphite phase carbon nitride(CMCN)is successfully prepared by two-step calcination method.Manganese oxides exist mainly in the form of Mn3O4 and MnCO3,and cobalt oxides exist in the form of CoO.Due to the presence of g-C_(3)N_(4),Mn and Co are uniformly distributed without agglomeration.It is indicated by XPS characterization that both Co and Mn have two valence states within CMCN,and the structural unit of g-C_(3)N_(4) is remained in CMCN.The catalytic degradation performance of CMCN catalyst is evaluated through degradation of Rhodamine B.It is shown that under the synergistic action of Mn and Co,the degradation rate of Rhodamine B exceeds 99%in 1min.It is verified by electron paramagnetic resonance and quenching experiments that nonradical oxidation(1O2)dominates the degradation of Rhodamine B.

关 键 词：双金属氧化物 石墨相氮化碳 过氧单硫酸盐 协同作用 非自由基 

分 类 号：TQ645.6[化学工程—精细化工]