卟啉聚合物的制备及对亚甲基蓝的吸附降解  

Preparation of Porphyrin Polymer and Its Adsorption and Degradation of Methylene Blue

作　　者：员佩雪 何淑媛 董昕儒 张学俊[1] YUAN Pei-xue;HE Shu-yuan;DONG Xin-ru;ZHANG Xue-jun(College of Chemistry and Chemical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学化学与化工学院,山西太原030051

出　　处：《精细化工中间体》2024年第5期58-65,共8页Fine Chemical Intermediates

摘　　要：以5,10,15,20-四(4-(4-甲酰基)苯氧基)苯基铜卟啉(TTPP-Cu)为前体,以对苯二胺、联苯胺、1,5-萘二胺为连接单元,合成了3种席夫碱类金属卟啉共价有机框架(PPDCOF-Cu,DABCOF-Cu,NDACOF-Cu),通过紫外可见光谱、傅立叶变换红外光谱、X射线粉末衍射、N_(2)吸附-脱附测试、扫描电子显微镜对前体和COFs进行了结构与微观形貌表征。以亚甲基蓝(MB)为模型污染物,考察了3种共COFs的光催化能力,并对其催化机理进行了探究。结果表明,DABCOF-Cu有较好的光催化能力,对MB的去除率达92.75%,经过5次循环,去除率保持在90%以上;催化过程中,·O^(2-)、·OH均作为活性物质参与染料降解。Three Schiff base metalloporphyrin covalent organic frameworks(PPDCOF-Cu,DABCOF-Cu,NDACOF-Cu)were synthesized using 5,10,15,20-tetra(4-(4-formyl)phenoxy)phenylcopper porphyrin(TTPP-Cu)as precursor and p-phenylenediamine,biphenylamine,and 1,5-naphthalene diamine as connecting units.The structures and microstructures of the precursor and COFs were characterized by UV-Vis spectroscopy,Fourier transform infrared spectroscopy,powder X-ray diffraction,N_(2)adsorption-desorption test,and scanning electron microscopy.Methylene blue(MB)was selected as the model pollutant to investigate the adsorption and photocatalytic ability of three COFs,and their catalytic mechanism was explored.The results showed that DABCOF-Cu exhibited good photocatalytic ability,with a removal rate of 92.75%for MB.After 5 cycles,the removal rate remained above 90%.During the catalytic process,both-0^(2-)and·0H participated as active substances in dye degradation.

关 键 词：卟啉 共价有机框架 光催化 

分 类 号：TQ649[化学工程—精细化工]