Preparation Of Novel Luminescence Nanomaterial And Its Nuorescence Research

As coal, oil and natural gas mining and widely used in great quantities, non-renewable energy in danger of drying up. And the solar energy is inexhaustible and inexhaustible energy. In the modern agriculture, the emphasis of the current agricultural science and technology research is to how to use solar energy efficiently. Adding some light conversion agent in conventional polyethylene film to get a new type of plastic film called sun-light conversion film which has a long life and no drops. It can turn parts of the solar ultraviolet light, purple light, green-light and so on into blue, red–light which can be used by plants. Sun-light conversion film can greatly improve the utilization ratio of sunlight for clops, increasing the agricultural production and quality.The traditional light conversion agents mainly be classified into organic dyes, inorganic salts and rare earth complex. They are low luminescence efficence, easy to reunite, difficult to film, high prices. Therefore, the development of more efficient, stable and low cost conversion materials is essential. Single inorganic and single organic type turning into inorganic organic compound type, single red light and single blue light turning into multi-color emissions compound type has become an important way to develop effective turn light material. Based on nanotechnology, in this paper, the preparation of three new compound type light conversion agent whit multi-color emissions is introduced. Their fluorescence property is excellent. It can be effectively applied in sun-light conversion film, which is of great significance for the improvement of agricultural production.(1) With the carboxylated graphene carbide nitrogen(g-C3N4-COOH) as a template, the rare earth complexes can be easily integrated in situ via covalent functionalization to its surface. Thus, A new kind of organic inorganic composite luminescent materials(g-C3N4-COOH/Eu(TTA)3Phen) was synthesized. It has been comprehensively characterized via FT-IR, XPS, UV–Vis absorption spectra, luminescence spectra, TEM, XRD, TG and DTG. The results show that the lumincent materials g-C3N4-COOH/Eu(TTA)3Phen exhibits multi-colour emissions which are consistent with the characteristic emissions of Eu3+(red light) and g-C3N4-COOH(blue light), and the energy transfer between them maks the photoluminescence quality and density of the Eu being greatly enhanced. The brilliant optical properties of the inorganic organic compound and multi-color emissions compound make them promising candidates applying in many practical fields, such as agriculture, biomedical applications.(2) With hair as raw material, the amino, carboxyl functionalized CDs was prepared and CDs- Eu complexes were synthesized successful through covalent bond action. The materials was been comprehensively characterized via SEM, FT-IR, XRD, EDS, UV–Vis absorption spectra, luminescence spectra. The results show that the CDs- Eu complexes exhibits multi-colour emissions which are consistent with the characteristic emissions of Eu3+(red light) and CDs(blue light), and the energy transfer between them matches very well. A kind of widely used inorganic organic composite and red blue light composite light conversion agent was prepared successfully.(3) This work presents a facile method(ball grinding method) to obtain layered double hydroxide(LDH) and layered double hydroxide- europium complexes(LDH-Eu complexes). The new synthesis materials has been comprehensively characterized via SEM, XRD, EDS, UV-Vis absorption spectra, luminescence spectra, TGA and DTG. Research shows that the ball grinding method makes it possible to seek LDH and LDH-Eu complexes of simple and rapid. The brilliant optical properties of the inorganic organic compound and the simple and rapid approach will help us to get a low cost and large-scale agricultural production.