Modification and vulcanization cadmium composite photocatalyst for metal organic framework, as well as preparation method and application of modification and vulcanization cadmium composite photocatalyst

A metal-organic framework and an organic framework technology are applied in the field of metal-organic framework modified cadmium sulfide composite photocatalyst and its preparation, which can solve problems such as obstacles, and achieve the effects of less energy consumption, low raw material cost and high photocatalytic activity.

CN109331881AInactive Publication Date: 2019-02-15HEFEI GUOXUAN HIGH TECH POWER ENERGY
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Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a modification and vulcanization cadmium composite photocatalyst for a metal organic framework, as well as a preparation method and application of the modification and vulcanization cadmium composite photocatalyst. The photocatalyst takes a three-dimensional porous titanium-based metal organic framework MIL-125 (Ti) as a carrier, and is formed by loading cadmium sulfide onto the MIL-125 (Ti) carrier. The photocatalyst has the advantages that the photocatalyst is environmentally friendly, large in specific surface area, more in reactive sites, high in photo-induced electron-hole utilization, high in photocatalytic activity, good in stability and resistant to corrosion, is formed by depositing cadmium sulfide nanometer particles onto the MIL-125 (Ti) according to a deposition method, and has the advantages of simple technology, low material cost, small energy dissipation and low time consumption; the photocatalyst has the advantages of high selectivity and simpleapplication method in the application of preparing benzaldehyde through benzyl alcohol selective oxidation.
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Description

technical field

[0001] The invention relates to the field of composite photocatalysts, in particular to a metal organic framework modified cadmium sulfide composite photocatalyst and a preparation method and application thereof. Background technique

[0002] The selective oxidation of aromatic alcohols to the corresponding aromatic aldehydes is one of the important areas of current research. In actual industrial production, the commonly used method for the production of aromatic aldehydes is the hydrolysis of benzyl chloride. The products produced by this method are difficult to separate, especially the reaction solution contains a relatively high concentration of chloride ions, which makes aromatic aldehydes widely used in various fields. , especially the application in medicine has been limited, photocatalytic technology as a green synthesis technology, its research has made great progress in recent years. As a new green synthesis technology, photocatalytic technology has...

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] A metal-organic framework-modified cadmium sulfide composite photocatalyst is obtained by using a three-dimensional porous titanium-based metal-organic framework MIL-125(Ti) as a carrier, and cadmium sulfide is loaded on the MIL-125(Ti) carrier; the metal-organic framework modifies cadmium sulfide The specific surface area of ​​the composite photocatalyst is 300-400m 2 / g, MIL-125(Ti) has a sheet structure, and the mass percentage of MIL-125(Ti) in the metal-organic framework modified cadmium sulfide composite photocatalyst i...