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开发了一种绿色调制协同法合成分层结构的稀土金属有机骨架材料Eu(BTC)(H2O)6,解决了传统合成方法中使用大量的、有毒有机溶剂的难题,用乙醇和碱性添加剂代替传统的有毒溶剂DMF。首先用乙醇将有机配体溶解,然后加入碱性添加剂使有机配体去质子化,从而使其与金属中心Eu3+成功配位,通过添加剂的-COO-与BTC配体的-COO-竞争与Eu3+的配位合成形貌各异的Eu(BTC)(H2O)6晶体。绿色调制协同法,利用碱性物质乙酸钠和甲酸钠作为调制剂成功制备了多种形貌的Eu(BTC)(H2O)6,包括十字花状晶体、小麦状晶体、麻花状晶体、花状晶体、稻草捆状晶体和杂乱的稻草捆状晶体。这些多形貌的晶体利用粉末X射线衍射、扫描电子显微镜、红外光谱和热重等表征确定了晶体的结构、形貌及化学组成。
Developed a green modulation synergistic synthesis of layered structure of rare earth metal organic framework material Eu (BTC) (H2O) 6, to solve the traditional synthesis methods using a large number of toxic organic solvents, the problem, with ethanol and alkaline additives instead The traditional toxic solvent DMF. First, the organic ligand is dissolved with ethanol, and then the basic additive is added to deprotonate the organic ligand so as to successfully coordinate with the metal center Eu3 +. By -COO- of the additive competes with -COO- of the BTC ligand and Eu3 + The coordination of the morphology of different Eu (BTC) (H2O) 6 crystals. Eu (BTC) (H 2 O) 6 has been successfully prepared by using sodium acetate and sodium formate as modulating agents, including cruciform crystals, wheat-like crystals, twist-like crystals and flower-like crystals , Straw bales and messy straw bales. These multimorphorphic crystals were characterized by XRD, SEM, FTIR and thermogravimetric analysis to confirm the crystal structure, morphology and chemical composition.