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Preparation method of UIO-66 modified cotton fabric and adsorption of UIO-66 modified cotton fabric on reactive dyes

A UIO-66-, reactive dye technology, applied in the adsorption of reactive dyes and the preparation of UIO-66 modified cotton fabrics, can solve the problems of poor stability of MOFs and affect the adsorption effect, and achieve good stability and repeated utilization. Enhanced, macroporosity effect

Inactive Publication Date: 2021-11-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although MOFs can effectively treat printing and dyeing wastewater, some MOFs have poor stability in water, which affects their adsorption effect.

Method used

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  • Preparation method of UIO-66 modified cotton fabric and adsorption of UIO-66 modified cotton fabric on reactive dyes
  • Preparation method of UIO-66 modified cotton fabric and adsorption of UIO-66 modified cotton fabric on reactive dyes
  • Preparation method of UIO-66 modified cotton fabric and adsorption of UIO-66 modified cotton fabric on reactive dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1UI

[0028] The preparation of embodiment 1UIO-66 modified cotton fabric

[0029] (1) Pretreatment of cotton fabric: 0.5 g of sodium hydroxide, 1.5 g of nonionic surfactant Triton X-100, and 0.75 g of acetic acid were dissolved in 500 mL of deionized water to prepare a refining solution. Soak the cotton fabric in the refining solution at 100°C for 1 hour, and hang it to dry at room temperature.

[0030] (2) Carboxymethylation of cotton samples: Soak the washed cotton fabric in 200 mL of isopropanol, add 20 mL of 7.5% (w / v) sodium hydroxide, and stir at room temperature for 1 h. Afterwards, the solution was heated to 45°C, 12g of sodium chloroacetate was added to the reaction bottle, stirred vigorously for 3h, and then the cotton fabric was baked at 85°C for 60min. Afterwards, the cotton fabric was soaked in acetic acid solution for 5 min, then washed with water, and hung to dry at room temperature.

[0031](3) Preparation of UIO-66 modified cotton fabric: Dissolve zirconium chlor...

Embodiment 2

[0033] Example 2 The influence of time on the adsorption and energy absorption of UIO-66, UIO-66 modified cotton fabric adsorption active orange 16

[0034] Method 1-UIO-66: Prepare 100mL of active orange 16 dye solution with a concentration of 60mg / L in an Erlenmeyer flask, weigh 50mg of UIO-66 powder into the Erlenmeyer flask, and carry out oscillating adsorption at room temperature at a speed of 200r / min, every 10min, 20min, 30min, 40min, 60min, 90min, 120min, 150min, 180min, and so on, measure the absorbance and calculate the adsorption amount.

[0035] Method 2-UIO-66 modified cotton fabric: configure 30mL reactive orange 16 dye solution with a concentration of 60mg / L in a conical flask, weigh 0.9g UIO-66 modified cotton fabric into the conical flask, Oscillating adsorption under the condition of 200r / min, every 10min, 20min, 30min, 40min, 60min, 90min, 120min, 150min, 180min, and so on, measure the absorbance and calculate the adsorption amount.

[0036] like figure 2...

Embodiment 3

[0037] Example 3 The influence of time on the adsorption and energy absorption of UIO-66, UIO-66 modified cotton fabric adsorption active violet 5

[0038] Method 1-UIO-66: Prepare 100mL of reactive violet 5 dye solution with a concentration of 60mg / L in an Erlenmeyer flask, weigh 50mg of UIO-66 powder into the Erlenmeyer flask, and carry out vibration adsorption at room temperature at a speed of 200r / min, every 10min, 20min, 30min, 40min, 60min, 90min, 120min, 150min, 180min, and so on, measure the absorbance and calculate the adsorption amount.

[0039] Method 2-UIO-66 modified cotton fabric: configure 30mL of reactive violet 5 dye solution with a concentration of 60mg / L in a conical flask, weigh 0.9g of UIO-66 modified cotton fabric and put it into the conical flask. Oscillating adsorption under the condition of 200r / min, every 10min, 20min, 30min, 40min, 60min, 90min, 120min, 150m n, 180min, and so on, measure the absorbance and calculate the adsorption amount.

[0040] l...

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Abstract

The invention relates to an in-situ growth preparation method of a UIO-66-cotton fabric and research application of the UIO-66-cotton fabric in the field of adsorption of reactive dyes in printing and dyeing wastewater. According to the technical scheme, the method comprises the steps: putting a carboxymethylated cotton fabric under low-concentration alkali liquor, zirconium chloride, terephthalic acid, an organic solvent and a pH regulator into a round-bottom flask, heating in a water bath, stirring, washing and airing. Compared with other adsorbents, MOFs have the advantages of higher specific surface area, large porosity, adjustable aperture and the like, but most MOFs have lower stability in water, so that UIO-66 is selected. Compared with other MOFs, the UIO-66 has excellent thermal stability and chemical stability, keeps the structure intact in strong acid and strong alkali, and is wide in application field. Meanwhile, the main component of the cotton fiber is cellulose, contains large hydroxyl and is easy to modify; and the structure of the cotton fiber is difficult to damage when the cotton fiber absorbs dye wastewater. The UIO-66 modified cotton fabric is relatively simple in subsequent recovery, the repeated utilization rate of the UIO-66 modified cotton fabric is improved, and the stability is relatively good.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for preparing UIO-66 modified cotton fabric and its adsorption to reactive dyes. Background technique [0002] The textile industry is an indispensable and important part of the world economy. Among them, the printing and dyeing industry has developed rapidly in recent years. Whether it is in the process of producing dyes or in the process of using dyes, a large amount of dye wastewater will be produced. The organic components in dye wastewater are complex, dark in color, high in alkalinity, strong in toxicity, high in total carbon content and chemical oxygen demand, and poor in biodegradability. These dye wastewater are difficult to self-degrade and require special treatment before discharge. Otherwise, it will affect human health and bring about environmental pollution problems. Among them, reactive dyes are widely used at present because of their relatively go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28D06M15/37D06M101/06C02F103/30C02F101/30
CPCB01J20/24B01J20/226B01J20/223C02F1/286D06M15/37D06M2101/06C02F2103/30C02F2101/308
Inventor 刘秀明卢雪房宽峻
Owner TIANJIN POLYTECHNIC UNIV