剥离自组装法制备NMOs/g-C_(3)N_(4)复合材料用于活化过一硫酸盐降解污染物的研究  

Synthesis of NMOs/g-C_(3)N_(4)composites by stripping self-assembly and application in pollutants degradation with heterogeneous activated peroxymonosulfate

作　　者：陈斐轲 张青 宋怿洲 毛辉麾[1] 左士祥[1] CHEN Fei-ke;ZHANG Qing;SONG Yi-zhou;MAO Hui-hui;ZUO Shi-xiang(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》2023年第4期186-193,共8页Modern Chemical Industry

摘　　要：采用液相剥离技术制备了石墨相氮化碳纳米片(g-C_(3)N_(4)),将2种n型金属氧化物(NMOs)、纳米氧化物(TiO_(2)和SnO_(2))通过自组装法分别负载到g-C_(3)N_(4)纳米片上制备NMOs/CN复合材料,并对其光催化活化过一硫酸盐(PMS)高效降解有机物的性能进行研究。结果表明,在PMS-TCN(10 h)体系中,可见光下污染物在30 min内降解率可达到91.69%,降解速率常数是块状g-C_(3)N_(4)的11.69倍。液相剥离法后二次自组装得到的NMOs/CN与PMS活化协同构成类芬顿体系,促进了其在高级氧化处理污染废水的潜在应用价值。Graphitic phase carbon nitride(g-C_(3)N_(4))nanosheets are prepared through liquid phase exfoliation technique,and NMOs/CN composites are obtained through loading two n-type metal oxides(NMOs)and nano oxides(TiO_(2)and SnO_(2)),respectively onto g-C_(3)N_(4)nanosheets by self-assembly method.The composites'photocatalytic performance in efficient degradation of organic matters by activated peroxymonosulfate is investigated.It is shown from study results that in PMS-TCN(10 h)system,the degradation rate of pollutants under visible light can reach 91.69%within 30 min,and the degradation rate constant is 11.69 times that by bulk g-C_(3)N_(4).NMOs/CN obtained by secondary self-assembly after liquid phase stripping method synergizes with PMS activation to form a Fenton-like system,promoting its potential application in advanced oxidation treatment of polluted wastewater.

关 键 词：石墨相氮化碳 液相剥离法 过一硫酸盐 光催化 

分 类 号：TQ31[化学工程—高聚物工业]