基于钼八异构体的无机有机杂化物的合成及其光降解活性的研究

发布时间：2018-07-09 11:46

本文选题：钼八异构体 + 杂化物　；参考：《东北师范大学》2017年硕士论文

【摘要】：基于多酸的无机有机杂化物是由金属配合物、有机配体或其阳离子与多酸基本建筑块构筑而成,它结合了无机和有机两部分的优点,因此在药物、催化、光电磁等方面具有潜在的应用价值。本论文选用MoCl5为钼源,利用水热合成的方法,成功得到了四个钼八异构体的多酸化合物。在引入1,10-菲Up啉配体和过渡金属Co2+时,利用NaOH或KOH碱性溶液调节pH值至7.0左右,即可得到两个结构独特的金属配合物修饰的钼八异构体化合物:[Co(phen)_3]2H4[NaO(H2O)(ι-Mo_8O_(26))]2·2H2O(1)——首个新型ι-型[Mo_8O_(26)]4-的二聚结构化合物,其中两单体之间由Na+相连;[Co(phen)_3]4H4[α-Mo_8O_(26)][β-Mo_8O_(26)]2[Mo_6O_(19)]Cl2·18H2O(2)——首个既包含有两种不同构型[Mo_8O_(26)]4-还包含[Mo_6O_(19)]2-的化合物。在只引入4,4′-联吡啶配体时,用NaOH水溶液调节pH值至5.0左右,即可得到另一化合物:(C10H10N2)2[β-Mo_8O_(26)](3);在引入1,10-菲Up啉配体和过渡金属Ni2+时,用NaOH水溶液调节pH值至7.0左右,即可得到化合物4:[Ni(phen)2]2(ξ-Mo_8O_(26))(4)我们对这四个化合物进行了系列表征,发现它们均有较低的禁带宽度,是潜在的宽带隙半导体材料,所以对这四个化合物进行了光降解染料的研究,发现化合物3和4对可见光均有很好的响应,证实它们是很有效的光催化剂。在可见光照射下,两个化合物均能达到降解有机染料甲基橙的目的,而且表现出较高的光催化降解能力。
[Abstract]:Inorganic organic hybrids based on polyacids are constructed from metal complexes, organic ligands or their cations and polyacid basic building blocks, which combine the advantages of both inorganic and organic parts, so in medicine, catalysis, Optoelectronic magnetism has potential application value. In this paper, MoCl5 was selected as molybdenum source, and four polyacid compounds of molybdenum octaisomer were successfully obtained by hydrothermal synthesis. The pH value was adjusted to about 7.0 by using NaOH or Koh alkaline solution when the 1 ~ (10) -phenanthroline ligands and transition metal (Co _ 2) were introduced. Two molybdenum octaisomers with unique structure were obtained: [Co (phen) 3] 2H 4 [NaO (H _ 2O) (l -Mo _ 8O _ (26)] 22 H _ 2O (1), the first new type [Mo _ 8O _ (26)] _ 4 dimer structure compound, The two monomers are connected by Na; [Co (phen) 3] 4H _ 4 [伪 -Mos _ 8O _ (26)] [尾 -Mo _ 8O _ (26)] 2 [Mo _ 6O _ (19)] Cl _ 218H _ 2O (2)-the first compound containing two different configurations [Mo8O _ (26)] 4- and [Mo6O_ (19)] 2-. Another compound, (C10H10N2) 2 [尾 -MoTi8O26] (3), was obtained by adjusting the pH value of NaOH aqueous solution to about 5.0, and when 110-phenanthroline ligand and transition metal Ni2 were introduced, the pH value was adjusted to about 7.0 with NaOH aqueous solution. Compound 4: [Ni (phen) 2] 2 (尉 -Mo8O _ (26) (4) We have characterized the four compounds and found that they all have low band gap width and are potential wide-band gap semiconductor materials, so we have studied the photodegradation of dyes for these four compounds. It is found that compounds 3 and 4 have a good response to visible light, which proves that they are very effective photocatalysts. Under visible light irradiation, both compounds can degrade organic dye methyl orange and exhibit high photocatalytic degradation ability.
【学位授予单位】：东北师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O643.36;O644.1

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