钛基金属有机框架材料合成的研究进展

Research Progress in Synthesis of Titanium-Based Organic Framework Materials

钛基金属有机框架(Ti-MOF)作为一种高价金属MOF,具有优异的化学稳定性、特殊的光响应特性、低毒性等优点,但由于钛金属源具有很高的反应活性,给材料合成带来了一定的挑战。本文综述了近年来Ti-MOF在合成方面的研究进展,详细介绍了溶剂热直接合成法、后交换合成法、原位生成SBUs构筑法等方法,并对形成的拓扑类型和晶体结构进行了分析,总结了Ti-MOF的合成规律及各种方法的优缺点。指出调控金属源和配位环境是获得Ti-MOF最重要的策略,并从原位生成SBUs构筑Ti-MOF和构筑双金属Ti/M-MOF两个角度进行了展望。

As a kind of metal-organic framework(MOF)with high valence,titanium-based metal-organic framework(Ti-MOF)has superior chemical stability,appealing photoresponsive properties,low toxicity and so on.However,due to the high reactivity of titanium sources,it brings certain challenges to the synthesis of materials.In this paper,the research progress of Ti-MOF synthesis in recent years is reviewed,and the solvothermal synthesis,post-synthetic modification and in situ SBUs construction methods are introduced in detail.The topological types and crystal structures formed are analyzed,and the synthesis rules of Ti-MOF and the advantages and disadvantages of various methods are summarized.It is pointed out that the control of the metal source and coordination environment is the most important strategy to obtain Ti-MOF,and the construction of Ti-MOF by in-situ formation of SBUs and heterometallic Ti/M-MOF are prospected.