七正丁硫基四氮杂钴卟啉的合成、表征及光催化性能

Synthesis,Characterization and Photocatalytic Performance of Cobalt Heptakis(butylthio)porphyrazine

以顺式-1,2-二氰基乙烯二硫钠盐为原料,得到前驱体双正丁硫基马来二腈,拟通过模板法经缩合反应在四氮杂卟啉外围引入正丁硫基,却意外分离得到了不对称的七正丁硫基四氮杂卟啉自由配体(Pz);将Pz与醋酸钴反应得到不对称的七正丁硫基四氮杂钴卟啉(CoPz);将CoPz负载在Al_2O_3上得到催化剂CoPz@Al_2O_3。通过1 HNMR、UVVis和MALDI-TOF-MS等对Pz和CoPz的结构进行表征,考察了CoPz@Al_2O_3对罗丹明B的光催化降解性能。结果表明,在pH值为4.01时,CoPz@Al_2O_3对罗丹明B的光催化降解效果最好,降解率达到62%。

Using 1,2-dithiomaleonitrile disodium salt as a material,aprecursor 2,3-bis（butylthio）maleonitrile was obtained.The precursor was tetramerized to produce the porphyrazine by a template method so as to introduce n-butylthio group onto the periphery of the porphyrazine.However,accidentally an asymmetric heptakis（butylthio）porphyrazine（Pz）was obtained.Then cobalt heptakis（butylthio）porphyrazine（CoPz）was synthesized from Pz and cobalt acetate.And CoPz was loaded on Al2O3 to form a catalyst CoPz@Al2O3.The structure of Pz and CoPz were characterized by 1 HNMR,UV-Vis and MALDI-TOF-MS.Photocatalytic performance of CoPz@Al2O3 to Rhodamine B（RhB）was evaluated.Results demonstrated that,when pH value was 4.01,CoPz@Al2O3had the best photocatalytic efficiency with the degradation rate of 62%.