Pr-MOFs (praseodymium-metal organic frameworks) crystal material as well as preparation method and application thereof

Abstract

The invention discloses a Pr-MOFs (praseodymium-metal organic frameworks) crystal material. The Pr-MOFs crystal material is prepared by enabling praseodymium nitrate hexahydrate and 2,6-dipicolinic acid to react by a hydrothermal method, washing by alcohol and water, and drying. A preparation method comprises the following steps of (1) preparation of a reaction solution, adding cobalt nitrate hexahydrate into distilled water, and magnetically stirring, so as to obtain a clear cobalt nitrate solution; adding 2,6-dipicolinic acid into absolute ethyl alcohol, and magnetically stirring, so as to obtain the clear 2,6-dipicolinic acid solution; mixing the two types of solution, so as to obtain the reaction solution; (2) preparation of the Pr-MOFs material: loading the reaction solution into a reaction kettle, placing in an oven to react, and filtering, washing and drying the reaction product under certain conditions. The Pr-MOFs crystal material has the advantages that the crystallizing and degrading rate reaches 85 to 90% when the methylene blue is catalyzed under the simulated visible light condition; the prepared material is novel, the technology is simple, the cost is lower, the catalyzing and degrading property is excellent, and the application prospect is wide in the fields of catalyzing and degrading, adsorbing, sensing and the like.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a Pr-MOFs crystal material and its preparation method and application. Background technique [0002] Environmental issues are one of the major issues facing contemporary society, and photocatalytic technology has received widespread attention in environmental governance and protection as early as the last century. At present, the most studied are semiconductor materials as catalysts. In the early days, cadmium sulfide (CdS) and zinc oxide (ZnO) were widely used, but because the chemical properties of these two materials are unstable, they will produce photodissolution during the catalytic process and dissolve harmful metal ions, so the application range is limited; Titanium dioxide (TiO 2 ), tin oxide (SnO 2 ), zirconium dioxide (ZrO 2 ) etc. are currently widely used materials because of their strong oxidation ability and stable chemical properties; but at the same time, TiO 2...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of low energy efficiency in the visible light range in the existing photocatalytic technology, utilizes the metal-organic framework compound’s own characteristics, and synthesizes a new type of material through the traditional hydrothermal method

Images