钌、钒修饰的多金属氧酸盐微米管制备及其性质研究

发布时间：2018-10-07 21:14

【摘要】：多金属氧酸盐化学由于其自身的路易斯酸性和布朗斯特酸性受到科研工作者的广泛关注。在多酸里引入不同金属的原子使得POM在其性质方面也更加丰富。本文主要研究的是多钒取代的多金属氧酸盐微米管,并且利用钒原子的引入成功的增强了硅钨酸氧化性,进而合成了多个钒原子取代的多金属氧酸盐杂多蓝微米管,并且研究了其电催化性质。同时我们还探究了钌修饰的SiW12多金属氧酸盐微米管在发光性质方面的应用。本论文中采用传统的的合成方法制备了缺位Keggin型的SiW9和SiW11,然后利用无模板法将多个钒原子修饰到缺位的多金属氧酸盐上,同时将钌修饰到SiW12多金属氧酸盐的微米管上,以制备钒、钌修饰的多酸微米管。其结构和形貌借助X-射线粉末衍射(XRD)、红外光谱(FT-IR)、扫描式电子显微镜(SEM)、能谱(EDS)、X-射线光电子能谱和元素分布图进行了表征,并且进行了电化学性质表征。荧光性质采用激光扫描共聚焦荧光显微镜和全功能荧光光谱进行了表征。本文对多钒取代的微米管及其氧化性进行了研究。分别采用了乙酰丙酮负载-煅烧方法,乙酰丙酮溶液生长方法和钌吡啶溶液生长方法合成了金属钌修饰的多金属氧酸盐微米管,并研究了它们的发光性质。
[Abstract]:Polyoxometalate chemistry is widely concerned by researchers because of its Lewis acidity and Brownst acidity. The introduction of atoms of different metals in polyacids makes POM more abundant in its properties. In this paper, the polyvanadium substituted polyoxometalate micron tubes are studied, and the oxidation properties of silicotungstic acid are enhanced by the introduction of vanadium atoms, and the polyoxometalate heteropoly blue micron tubes replaced by vanadium atoms are synthesized. The electrocatalytic properties were also studied. We also investigated the application of ruthenium modified SiW12 polyoxometalate microtubes in luminescent properties. In this thesis, the absence of Keggin type SiW9 and SiW11, were prepared by the traditional synthesis method, then the vanadium atoms were modified to the vacant polyoxometalates by template free method, and the ruthenium was modified onto the micron tubes of SiW12 polyoxometalates. Vanadium and ruthenium modified polyacid micron tubes were prepared. Its structure and morphology were characterized by X-ray powder diffraction (XRD), infrared spectroscopy (FT-IR), scanning electron microscope (SEM), (SEM), spectrum, (EDS) spectrum and elemental distribution, and the electrochemical properties were characterized. The fluorescence properties were characterized by laser scanning confocal fluorescence microscopy and full-function fluorescence spectroscopy. In this paper, polyvanadium substituted micron tubes and their oxidation properties are studied. Metal ruthenium modified polyoxometalate microtubes were synthesized by acetylacetone supported calcination method acetylacetone solution growth method and ruthenium pyridine solution growth method respectively. Their luminescence properties were 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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