三嗪-吡唑钌配合物的合成、结构及光催化活性

Synthesis,Structure and Photocatalytic Activity of Triazine-Pyrazole Ruthenium Complexes

光催化具有无污染、安全高效等优点,已成为环保领域的研究热点。本文选择2,4-二(3,5-二甲基吡唑)-6-二乙基胺-1,3,5-三嗪(L1)和2,6-二[3-(5-甲基吡唑基)]吡啶(L_2)为配体、以RuCl_3为金属源,合成了3种配合物[Ru(L_1)Cl_3](1)、[Ru(L_2)_2]·Cl_3(2)和[Ru(L_2)_2]·(H_2BTC)·(HBTC)·H_2O(3),同时进行了IR、UV-Vis、TG及X射线衍射等表征,并对配合物在光催化降解罗丹明B方面进行了探讨,结果表明,配合物1~3均具有一定程度的光降解效果,降解效果分别为46.8%、44.7%和40.4%。相同条件下,加入H2O2后的配合物1~3的降解效果比金属盐、配体及H_2O_2单独存在时的降解效果好。

As the photocatalytic reaction has the advantages of non-pollution,safe and efficient,so it has become a research hotspot of environmental protecting field. Therefore,this work choose 2,4-two（ 3,5-two methyl pyrazole）-6-two ethyl amine-1,3,5-three triazine（ L1） and 2,6-di[3-（ 5-methylpyrazolyl） ] pyridine（ L2） as the ligands,RuCl3 as the metal source to synthesize three kinds of complexes,[Ru（ L1） Cl3]（ 1）,[Ru（ L2）2]·Cl3（2）,and [Ru（ L2）2]·（ H2 BTC） ·（ HBTC） ·H2O（ 3）. At the same time,the complexes were characterized by infrared（ IR） spectrometry,ultraviolet-visible（ UV-Vis）,themogravimetry（ TG） and X-ray diffraction,and the photocatalytic degradation of Rh B was explored. The results show that the complexes1 3 have a certain degree of photodegradation effect,the degradation efficiency is 46. 8%,44. 7% and40. 4%,respectively. Under the same conditions,the degradation effects of the complexes are better than those corresponding only with metal salts,ligands and H2O2,respectively.