A kind of preparation method of graphite phase carbon nitride doped with rare earth metal ions

Abstract

The invention belongs to the field of fluorescent material preparation and relates to a preparation method of rare earth metal ion-doped graphite phase carbon nitride. The molecular formula of the fluorescent material is g‑C 3 N 4 :Tb. The preparation method is as follows: adding nitrogen-containing organic matter and terbium salt into deionized water and mixing evenly, adding inorganic acid, and irradiating with microwaves in a microwave oven for a period of time. After natural cooling, the solid g‑C was obtained 3 N 4 : Tb material. The dispersion liquid formed by the fluorescent material exhibits strong green fluorescence under the irradiation of ultraviolet light. When the excitation wavelength is 290nm, three emission peaks appear in the emission spectrum, which is a broad peak (g-C 3 N 4 characteristic peak) and two sharp emission peaks (Tb 3+ characteristic emission peak). The method is low in cost, simple in operation, good in repeatability, high in stability and good in fluorescent performance, and has good application prospects in the fields of biological imaging, analysis and detection, and the like.

Description

A kind of preparation method of rare earth metal ion doped graphitic carbon nitride Technical field: The invention belongs to the technical field of fluorescent material preparation, be specifically related to a kind of rare earth metal ion Tb 3+ doped graphite Preparation method of phase carbon nitride. Background technique: Graphite phase carbon nitride (g-C 3 N 4 ) is a typical metal-free semiconductor with a special 2D graphitic-like layered junction structure. It has a narrow band gap, can absorb visible light, has high chemical and thermal stability, excellent photocatalytic performance and good fluorescence properties and biocompatibility. Moreover, the raw materials used for synthesizing it are easy to obtain and have low cost. Currently g‑C 3 N 4 successfully and It is widely used in the field of photocatalysis, such as photocatalytic decomposition of water to produce hydrogen, photocatalytic degradation of organic dyes, etc. In contr...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a novel green fluorescent material g-C 3 N 4 : Tb and preparation method thereof, can improve the fluorescent properties of carbon nitride and solve the problems of long time-consuming and high energy consumption in current synthesis methods

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