多钼酸基无机—有机杂化化合物的合成，结构表征和性质研究

发布时间：2018-12-16 17:57

【摘要】：本文采用水热合成方法以钼酸钠、金属离子、4,4'-联吡啶(bipy)和2-膦酰基乙酸为原料合成了三个未见报道的钼酸氧簇化合物,并对这些化合物进行了晶体结构测定、红外、PXRD、元素分析等表征,并且研究了它们的荧光性能、热稳定性和电化学性能,并研究了对化合物1在紫外灯照这下对亚甲基蓝的光催化性能。(H2bipy)3[(H2O)2Cu2(bipy)3(PMo11CuO39)2]·8H2O(1) (Hbipy)3[Al(OH)6Mo6O18]·2H2O (2) (C5H5N)·(MogO24)·2H2O (3)化合物1中的单取代杂多酸阴离子[α-PCuMo11O39]5.通过共用取代原子的端氧而连成杂多阴离子直链,在Cu2+和4,4'-联吡啶的相互作用下使相邻的两条聚阴离子链形成一条延a轴无限延伸的铁轨形链,其中[α-PCuMo11O39]5.阴离子链作为轨道两侧的双轨,吡啶分子作为轨道中的枕木。实验表明反应溶液的pH值对该化合物的形成中起着重要的作用。化合物2是一个Anderson-B系列的化合物,在该化合物中聚阴离子[Al(OH)6(Mo6O18)]3既是氢键的给予体,也是氢键的接受体,氢键是构成该化合物三维晶体结构的作用力。化合物3具有一种不同寻常的三氧化钼夹层结构,三氧化钼层间通过游离吡啶分子和水分子构成三维超分子结构。采用循环伏安法对化合物1-3的电化学性质进行了研究,实验表明化合物1-3均具有良好循环伏安稳定性,同时对化合物1-3分别进行荧光性质研究,实验表明化合物1-3的最大发射峰来源于配体本身,同时还对化合物1-2的热稳定性进行了研究。
[Abstract]:In this paper, three unreported oxymolybdate clusters have been synthesized by hydrothermal synthesis from sodium molybdate, metal ions, 4H 4N bipyridyl (bipy) and 2 phosphonyl acetic acid. The crystal structure of these compounds has been determined. Their fluorescence properties, thermal stability and electrochemical properties were studied by IR and PXRD, elemental analysis. The photocatalytic activity of para-compound 1 for methylene blue was studied by UV lamp. (H2bipy) 3 [(H2O) 2Cu2 (bipy) 3 (PMo11CuO39) 2] 8H2O (1) (Hbipy) 3 [Al (OH) 6Mo6O18] 2H2O (2) (1) (Hbipy) 3 [Al (OH) 6Mo6O18] 2H2O (2) The monosubstituted heteropolyacid anions [伪-PCuMo11O39] 5 in C5H5N (MogO24) 2H2O (3) 1. The heteropoly anionic straight chain is formed by using the oxygen terminal of the substituted atom. Under the interaction of Cu2 and 4C4O4-bipyridine, the adjacent polyanionic chains form a rail chain extending infinitely along the a axis, in which [伪-PCuMo11O39] 5. The anionic chain acts as the double orbital on both sides of the orbit, and the pyridine molecule serves as the sleeper in the orbit. The experimental results show that the pH value of the reaction solution plays an important role in the formation of the compound. Compound 2 is a Anderson-B series compound in which polyanion [Al (OH) 6 (Mo6O18)] 3 is both the donor and acceptor of the hydrogen bond, which is the force forming the three-dimensional crystal structure of the compound. Compound 3 has an unusual interlayer structure of molybdenum trioxide, which is composed of free pyridine and water molecules. The electrochemical properties of compounds 1-3 were studied by cyclic voltammetry. The results show that the maximum emission peak of compound 1-3 originates from the ligand itself, and the thermal stability of compound 1-2 is also studied.
【学位授予单位】：东北师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：O641.4

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