氮掺杂石墨烯/四氧化三铁复合物负载含硫氮杂钴卟啉光催化降解有机污染物  

Photocatalytic Degradation of Organic Pollutant by Composite Catalyst N-Graphene/Fe_3O_4/CoPz(hmdtn)_4

作　　者：操兰 杨昌军[1] 邓克俭[1] 张丙广[1] CAOLan;YANG Chang-jun;DENG Ke-jian;ZHANG Bing-guang(Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission ＆ Ministry of Education 9 Hubei Province ^College of Chemistry and Material Science, South-Central University For Nationalities,Wuhan 430074, Chin)

机构地区：[1]中南民族大学化学与材料科学学院催化材料科学国家民委-教育部暨湖北省重点实验室,湖北武汉430074

出　　处：《化学与生物工程》2018年第5期16-19,25,共5页Chemistry & Bioengineering

基　　金：国家自然科学基金项目(20977115;21272281和21772237);湖北省自然科学基金项目(2014CFB919;2018CFB494)

摘　　要：将四羟甲基四(1,4-二噻)四氮杂钴卟啉[Co Pz(hmdtn)4]负载在氮掺杂石墨烯/四氧化三铁(N-graphene/Fe_3O_4)复合物上制备了复合催化剂N-graphene/Fe_3O_4/Co Pz(hmdtn)4,利用XRD、TEM和IR等对其进行了表征,并考察了复合催化剂的光催化性能,以及加入不同活性物种的猝灭剂对其光催化活性的影响。结果表明,复合催化剂N-graphene/Fe_3O_4/Co Pz(hmdtn)4具有较好的光催化性能,在以氙灯作为光源模拟太阳光的条件下,光照8 h可使有机染料罗丹明B(Rh B)的降解率达到92%;空穴(h+)、羟基自由基(·OH)、超氧负离子自由基(O_2^-·)和单线态氧(1O_2)是此光催化过程中的主要活性物种。We prepared composite catalyst N-graphene/Fe3O4/Co Pz（hmdtn）4 by loading cobalt tetra（2-hydroxymethyl-1,4-dithiin） porphyrazine[Co Pz（hmdtn）4] on N-graphene/Fe3O4 composite,and characterized its structure by XRD,TEM,and IR. Moreover,we investigated the photocatalytic activity of the composite catalyst,and analyzed the effect of different active species of quenchers on the photocatalytic activity of the composite catalyst. The results indicate that the composite catalyst shows a better photocatalytic activity,and the photodegradation rate of Rh B catalyzed by the composite catalyst reaches 92% under simulated sunlight for 8 h which uses xenon lamp as a light source. Hole（h＋）,hydroxyl radical（·OH）,superoxide anion radical（O2^-·）,and singlet oxygen（1 O2） are the main active species in the photocatalytic process.

关 键 词：含硫氮杂钴卟啉 氮掺杂石墨烯 四氧化三铁 光催化 

分 类 号：O611[理学—无机化学] TQ426.6[理学—化学]