Metal-organic framework material photosensitization titanium dioxide co-catalyst, and preparation method and application thereof

Abstract

The invention discloses a metal-organic framework material photosensitization titanium dioxide co-catalyst ADA-M / TiO2, which is obtained through simply mechanical grounding and mixing an MOFs material ADA-M and TiO2 according to a molar ratio of 0.4 percent to 40 percent, so that photoinduced electron transfer from the ADA-M to the TiO2 can be realized, and the aim of co-catalysis under visible light is achieved, wherein the ADA is an organic-ligand 9,10-diacrylic acid anthracene, and M is metal salt. The invention also discloses application of the metal-organic framework material photosensitization titanium dioxide co-catalyst ADA-M / TiO2 on high-efficiently catalytic degrading multiple cationic and anionic dyestuffs. A preparation method of the metal-organic framework material photosensitization titanium dioxideco-catalyst ADA-M / TiO2 provided by the invention is simple; an obtained binaryco-catalyst can be used for high-efficiently catalytic degrading the multiple cationic and anionic dyestuffs at room temperature and under visible light without additionally adding any oxidizing agent, has better stability and durability, and is green, environmental-friendly, and low in environment pollution abatement cost.

Description

technical field [0001] The invention relates to a visible light catalyst, in particular to a metal-organic framework material photosensitized titanium dioxide cocatalyst ADA-M / TiO 2 And its preparation method and application. Background technique [0002] As people's requirements for the living environment are increasing, economical and efficient technical means are urgently needed to treat the organic wastewater discharged from industry, especially the dye wastewater discharged from printing factories and textile factories. Due to the advantages of solar energy, such as cheap, clean, and renewable, the use of solar energy for photocatalytic degradation of pollutants has become the focus of attention, and the core of photocatalytic technology is the selection of economical and efficient photocatalysts. [0003] Anatase titanium dioxide (TiO 2 ) as an excellent photocatalyst has been widely used in the fields of photocatalytic water splitting to produce hydrogen, pollutant ...

AI Technical Summary

Problems solved by technology

Most of the current research is to reduce the interfacial energy between the two phases by forming new chemical bonds, and to establish channels for electron or energy transfer. Although some progress has been made, the methods reported so far are too complicated and harsh. The method is only applicable to selected MOFs materials, and the steps are relatively cumbersome. At the same time, the obtained composite catalyst also has certain problems in terms of stability and catalytic activity, and its practicability is not strong.

At present, there is no way to adjust the MOFs material to make it compatible with TiO 2 The energy level is matched to effectively reduce the interfacial energy between the two phases, and the MOFs material and TiO are established by simple mechanical mixing. 2 A report on high-efficiency visible-light co-catalysis system

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