nano-micron composite structure based on fluorescence properties of control and catalyst design

Title: nano-micron composite structure based on fluorescence properties of control and catalyst designAuthor: Huang HuiDegree-granting units: Northeast Normal UniversityKeywords: micro-composite structure is satisfied;; rare earth oxides;; spectral properties;; photocatalystSummary:

Functional nano-composite materials with special optical, electrical, acoustic, thermal, magnetic and other properties in the nano-composite materials occupy an important position. Composite materials in the nano-micron degradation of organic pollutants, cleaning up the environment, development of new energy has an important significance, preparation of new Strong magnets functional nano-composite photocatalytic materials is a theoretical value and broad application prospects of an important issue. Around the new functional nano-composite photocatalytic materials research, we mainly conducted the following research areas:

(1) using sol - gel prepared by different oxide core-shell structure nanocomposites. Fluorescence properties of rare earth metals in particular, better use of europium, manganese magnetic better, as the shell, polystyrene? Zinc oxide? Such as yttrium oxide core, its morphology were characterized by testing its fluorescence properties, and found that its structure changes on the fluorescent properties of very weak.

(2) using sol - gel prepared by different metal-doped silica microspheres, and their morphology were characterized by testing its fluorescence properties. The product was a near-infrared excitation occurs near-infrared emission of the phenomenon, but still maintain the main features of silica microspheres. And the volume fraction of different kinds of metal with the nature and intensity of the fluorescence does not change.

(3) using the typical method of preparation of yttrium oxide, characterized by their morphology, the changing nature of the fluorescence test and found a very good red and blue fluorescence, but the photocatalytic effect is not very good.

(4) design an efficient light metals and metal salts compound catalyst. At room temperature using a simple solid-phase synthesis of metallic silver and silver nano-particles with the formation of photocatalyst. Characterize their morphology, to test their http://www.chinamagnets.biz/ photocatalytic ability, and discuss the strength of the photocatalytic mechanism.

Scanning electron microscopy (SEM), fluorescence spectroscopy (PL), UV - visible spectroscopy (UV-VIS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy and other means of testing the product's shape, structure, range of fluorescent light , UV absorption properties of a series of characterization.Degree Year: 2010