Hydrothermal synthesis method for metal organic frame with photocatalytic performance

A metal-organic framework, hydrothermal synthesis technology, applied in cobalt organic compounds, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as unsatisfactory photocatalytic performance, and achieve good crystallization , the effect of high purity and high yield

Inactive Publication Date: 2014-02-19
JIANGSU UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the photocatalytic performance of the complex is not ideal
So far, there is no [Co 2 (HDPPZC) 4 (Cl) 2 (H 2 O) 2 ](PW 12 o 40 )·7H 2 Related reports on the synthesis of O and photocatalytic research have emerged

Method used

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  • Hydrothermal synthesis method for metal organic frame with photocatalytic performance
  • Hydrothermal synthesis method for metal organic frame with photocatalytic performance
  • Hydrothermal synthesis method for metal organic frame with photocatalytic performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The specific process steps of a hydrothermal synthesis method of a metal-organic framework with photocatalytic properties are as follows:

[0031] (1) Weigh 0.0163g of bipyridyl[3,2-a:2',3'-c]phenazine-2-carboxylic acid, 0.144g of phosphotungstic acid, and 0.0476g of chromium chloride hexahydrate with an electronic balance .

[0032] (2) Pipette 12mL of deionized water into a beaker, add the three reactants in (1), stir with a glass rod for 10min, and make it fully mixed.

[0033] (3) Transfer the mixed solution to a 25ml stainless steel reaction kettle with a polytetrafluoroethylene liner, the hydrothermal reaction condition is 140°C, and the reaction time is 72h.

[0034] (4) After the hydrothermal reaction was completed, it was naturally cooled to room temperature, washed several times with deionized water, and dried in a vacuum oven at 60°C for 5 hours to obtain orange columnar crystals.

[0035] The organometallic framework with photocatalytic properties prepared...

Embodiment 2

[0037] [Co prepared in embodiment 1 is taken by weighing 2 (HDPPZC)4 (Cl) 2 (H 2 O) 2 ](PW 12 o 40 )·7H 2 O 10mg, added to 50ml initial concentration is 2×10 －5 In mol / L rhodamine B solution, the total removal rate of rhodamine B reached 69.62% after dark reaction for 20 minutes and photocatalysis for 120 minutes.

Embodiment 3

[0039] [Co prepared in embodiment 1 is taken by weighing 2 (HDPPZC) 4 (Cl) 2 (H 2 O) 2 ](PW 12 o 40 )·7H 2 O 15mg, added to 50ml initial concentration is 2×10 －5 In mol / L rhodamine B solution, the total removal rate of rhodamine B reached 93.52% after dark reaction for 20 minutes and photocatalysis for 120 minutes.

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Abstract

The invention relates to a hydrothermal synthesis method for a metal organic frame with photocatalytic performance, and belongs to the technical field of preparation of environmental-friendly materials. The hydrothermal synthesis method comprises the following steps: according to the substance ratio of 1:1:4, respectively weighing didpyridine[3,2-a:2',3'-c]henazine-2-dicarboxylic acid, phosphotungstic acid and chromic chloride hexahydrate solids; transferring three solids in the step (A) into a flask, adding deionized water for dissolving, and agitating for ten minutes so as to be fully mixed; transferring the mixture in the step (B) into a reaction kettle for performing hydrothermal reaction; after the hydrothermal reaction is completed, naturally cooling to room temperature, washing with deionized water, and drying to obtain organic columnar crystals, namely photocatalyst [Co2(HDPPZC)4(Cl)2(H2O)2](PW<12>O<40>).7H2O. According to the hydrothermal synthesis method, a well crystallized product can be directly obtained by adopting intermediate-temperature liquid phase control, high-temperature calcination and crystallization are not required, and the energy consumption is relatively low.

Description

technical field [0001] The invention relates to a method for preparing a metal-organic framework with photocatalytic performance by a hydrothermal method, and belongs to the technical field of environment-friendly material preparation. Background technique [0002] Metal-organic framework (metal organic framework, referred to as MOF) is a one-dimensional, two-dimensional, or three-dimensional porous structure crystalline compound formed by the coordination of metal ions or clusters and rigid organic molecules, because of its high specific surface area, unique Pore ​​structure, can be chemically modified according to the target requirements, etc., all have attractive application prospects in the fields of gas adsorption, catalysis, and separation. [0003] In 1972, Japanese scientists Fujishima and Honda published in Nature the use of semiconductor metal oxide TiO 2 Photolysis of water to produce O 2 and H 2 The experimental results have opened the prelude to the study of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06B01J31/22
Inventor 刘春波任傲车广波丛尧孙赫一
Owner JIANGSU UNIV
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