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Three-component compound catalyst, as well as preparation method and application thereof

A ternary composite and catalyst technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. High efficiency, lower costs, and the effect of being conducive to industrialization and application

Inactive Publication Date: 2018-11-30
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nowadays, although there are endless methods of combining MOFs materials with other materials to prepare composite materials, the methods are often cumbersome and require high processing technology.

Method used

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  • Three-component compound catalyst, as well as preparation method and application thereof
  • Three-component compound catalyst, as well as preparation method and application thereof
  • Three-component compound catalyst, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 : NaYF 4 :Yb,Tm@Cd-MOF@TiO 2 preparation of

[0053] Formulated with Cd(BF 4 ) 2 (60mg, 0.186mmol), 25mg NaYF 4 : Yb, Tm and 0.1g PVP homogeneous turbid solution of 2mL water, preparation containing 4-amino-3,5-bis(4-pyridine-3-phenyl)-1,2,4-triazole (46.4mg ,0.100mmol) of 3mL methanol solution, add the aqueous turbid solution dropwise to the ligand-containing methanol solution, sonicate for 10min to form a gel, add 20mgTiO 2 NPs, stirred evenly, stood still for 12 hours, centrifuged, soaked and washed with ethanol three times, and dried at 80°C for 12 hours to obtain NaYF 4 :Yb,Tm@Cd-MOF@TiO 2 , represented by the structural formula as 7.15NaYF 4 :Yb,Tm@4.77Cd 2 (C 20 h 18 N 6 )@TiO 2 .

[0054] To the NaYF prepared in this embodiment 4 :Yb,Tm@Cd-MOF@TiO 2 For characterization, the IR spectrum is as figure 2 As shown, the SEM pattern is as image 3 Shown, the X-ray powder diffraction spectrum is shown as Figure 4 Shown, the ICP analysis ...

experiment example 2

[0058] Experimental example 2 : NaYF 4 :Yb,Tm@Cd-MOF@TiO 2 Photodegradation of dyes in water

[0059] Aqueous solution of methylene blue (10 -5 mol / L, 5ml) into the quartz cell, then add 5mg catalyst NaYF 4 :Yb,Tm@Cd-MOF@TiO 2 (prepared in Example 1), stirred for 5-10min, and then with a wavelength of 980nm and a power of 10w infrared lamps to irradiate the aqueous solution of the quartz cell, after the dye degradation reaction was completed, the catalyst was quickly centrifuged to reclaim the catalyst (98% recovery by mass) ), directly into the next photodegradation reaction, according to the above conditions, the catalyst is used for 5 cycles, and the degradation rate is calculated by ultraviolet spectrum testing, and the degradation effect is as follows: Figure 7 And shown in Table 2. The recovered catalyst was characterized by PXRD, NaYF 4 :Yb,Tm@Cd-MOF@TiO 2 Still keep the original frame (PXRD picture as Figure 8 shown).

[0060] Table 2NaYF 4 :Yb,Tm@Cd-MOF@...

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Abstract

The invention relates to a three-component compound catalyst, as well as a preparation method and application thereof. The three-component compound catalyst is represented as NaYF4:Yb,Tm@Cd-MOF@TiO(2), and takes 4-amino-3,5-bis (4-pyridine-3-phenyl) -1,2,4-triazole as ligand. The catalyst is highly efficient, easy to obtain and feasible for recycled use; and thus, the catalyst is an excellent catalyst for photodegradation of dyes in water.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a ternary composite catalyst and its preparation method and application. Background technique [0002] In organic synthesis reactions, the role of catalysts is very large. However, the chemical reaction environment in which the catalyst works is not the same: some catalysts work when the reaction system is heated; some catalysts work when the reaction system is electrified; Works under light conditions. For catalysts that work under light, they are called photocatalysts. Because light energy is cheaper and cleaner than heat and electricity, photocatalysts have attracted much attention from chemists. [0003] An excellent photocatalyst will involve three aspects: first, a suitable light source, sunlight is naturally the suitable light source that scientists hope, and it is composed of sunlight (ultraviolet light: visible light: near-infrared light = ~ 5: ~ 49:~46) ...

Claims

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Application Information

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IPC IPC(8): B01J31/38C02F1/30C02F101/30
CPCC02F1/30B01J31/38C02F2305/10C02F2101/308B01J35/39
Inventor 董育斌王建成阚璇刘从学
Owner SHANDONG NORMAL UNIV
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