Unlock instant, AI-driven research and patent intelligence for your innovation.

Efficient preparation method of UiO-66 and adsorption of UiO-66 to cationic dye

A uio-66, high-efficiency technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem that stability and good adsorption effect cannot coexist, and achieve reduction of pollutant discharge, process The effect of simple operation and stable structure

Pending Publication Date: 2022-03-25
TIANJIN POLYTECHNIC UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, most MOFs still have the problem that the stability in water and good adsorption effect cannot coexist.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Efficient preparation method of UiO-66 and adsorption of UiO-66 to cationic dye
  • Efficient preparation method of UiO-66 and adsorption of UiO-66 to cationic dye
  • Efficient preparation method of UiO-66 and adsorption of UiO-66 to cationic dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of UiO-66 under different temperatures in Example 1

[0022] Zirconium chloride (1510mg, 6.48mmol) was dissolved in a mixed solution of 60mLDMF and 12mL concentrated hydrochloric acid, and ultrasonication was applied for 10min to obtain a metal precursor solution; in a separate beaker, terephthalic acid (1495mg, 9mmol) was dissolved In 120mL DMF, add it to the precursor solution and mix evenly, heat it in a water bath to 60°C, 80°C, 100°C, 120°C, and 140°C for 12 hours, wash with DMF and methanol solution three times after the reaction, and finally vacuum Dry for 24h. Five kinds of UiO-66 prepared at different temperatures were obtained, and then these five kinds of UiO-66 were characterized. The results are shown in Table 1.

[0023] The specific surface area of ​​UiO-66 prepared at different temperatures in table 1

[0024]

Embodiment 2

[0025] Preparation of UiO-66 under different molar ratios of zirconium chloride and terephthalic acid in Example 2

[0026] Dissolve zirconium chloride in a mixed solution of 60mL DMF and 12mL concentrated hydrochloric acid, and apply ultrasound for 10min to obtain a metal precursor solution; in a separate beaker, dissolve terephthalic acid in 120mL DMF, add to the precursor solution and mix Uniform, heated in a water bath to 80°C for 12 hours, washed with DMF and methanol solution three times after the reaction, and finally dried in vacuum for 24 hours. The molar ratios of zirconium chloride to terephthalic acid are 1:1, 1:1.5, and 1:2, respectively. Three kinds of UiO-66 prepared with different molar ratios were obtained, and then the three kinds of UiO-66 were characterized. The results are shown in Table 2.

[0027] The specific surface area of ​​UiO-66 prepared under different molar ratios in table 2

[0028]

Embodiment 3

[0029] Preparation of UiO-66 under different heating methods in Example 3

[0030] Zirconium chloride (1510mg, 6.48mmol) was dissolved in a mixed solution of 60mLDMF and 12mL concentrated hydrochloric acid, and ultrasonication was applied for 10min to obtain a metal precursor solution; in a separate beaker, terephthalic acid (1495mg, 9mmol) was dissolved In 120mL of DMF, add to the precursor solution and mix evenly, heat to 80°C and react for 12h. After the reaction, wash with DMF and methanol solution for 3 times, and finally vacuum dry for 24h. The heating method is water bath heating and oven heating. Two kinds of UiO-66 prepared by different heating methods were obtained, and then the two UiO-66 were characterized. The results are shown in Table 3.

[0031] Table 3 The specific surface area of ​​UiO-66 prepared under different heating methods

[0032]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an efficient preparation method of UiO-66 and research application of UiO-66 in the field of adsorption of cationic dyestuff, and the technical scheme is as follows: different reaction conditions are changed, zirconium chloride, terephthalic acid, an organic solvent and a pH regulator are put into a round-bottom flask for water bath heating and stirring, and then washing and airing are performed. The efficient preparation method of the UiO-66 is obtained. Compared with other MOFs materials, the preparation method of the UiO-66 adopts a one-bath method, the production process is simple, the raw material cost is low, the operation is convenient, the production cost is reduced, and the energy consumption is reduced. The removal rate of cationic dyes is high, and the method has research significance in the field of colored wastewater treatment.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an efficient preparation method of UiO-66 and its adsorption to cationic dyes. Background technique [0002] In recent years, with the continuous development of science and technology and society, the industrialization process of the textile industry has continuously improved the requirements for the environment while meeting the needs of people's daily life. Among them, the wastewater produced by industrial production has caused large water pollution due to imperfect treatment, which does not conform to the concept of green environmental protection advocated by today's society. In the production process of textile products, it is necessary to use a large amount of water to dye and print textiles, so the treatment of dye wastewater becomes particularly important. If the dye wastewater is not properly treated and discharged into the river, it will cause major environmental...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F103/30
CPCB01J20/226C02F1/285C02F2103/30
Inventor 刘秀明卢雪房宽峻
Owner TIANJIN POLYTECHNIC UNIV