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A method of loading two-dimensional visible photocatalytic materials on organic polymer fibers

A technology of organic polymers and polymer fibers, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of difficult recovery of photocatalysts, and achieve Improved degradation efficiency, low price, and short preparation cycle

Active Publication Date: 2022-04-26
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for loading a two-dimensional visible light catalytic material on a polymer fiber, and to load a two-dimensional (2D) visible light catalytic material with an ultra-high specific surface area on an organic polymer fiber by a secondary growth method to solve the problem of Photocatalyst is difficult to recycle

Method used

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  • A method of loading two-dimensional visible photocatalytic materials on organic polymer fibers
  • A method of loading two-dimensional visible photocatalytic materials on organic polymer fibers
  • A method of loading two-dimensional visible photocatalytic materials on organic polymer fibers

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Embodiment 1

[0034] The two-dimensional ultra-high specific surface area rGO-TiO of this embodiment 2 The preparation method of the polypropylene fiber supported by photocatalyst, the preparation steps are as follows:

[0035] The molar ratio of titanium isopropoxide: ethylene glycol: ethanol in the synthetic solution is 1:97:17, the content of hydrochloric acid is 0.3 mol / L, the structure directing agent L64 is 0.003 mol / L, and GO is 0.06 mg / ml.

[0036] (1) Preparation of seed crystal treated polypropylene fiber: take a certain amount of TiO 2 powder, configured as a 0.1% ethanol solution, and ultrasonically stirred to make TiO 2 Uniformly disperse to form a seed liquid, and then soak the polypropylene fiber with a size of 5×5 cm in the seed liquid for 6 hours, then take it out and dry it at 50°C for later use. Figure 5 It is the SEM image of the polypropylene fiber surface treated with the seed liquid.

[0037] (2) Liquid A: Use a precision electronic balance to take 0.74g (37wt%) h...

Embodiment 2

[0055] The two-dimensional ultra-high specific surface area rGO-TiO of this embodiment 2 The preparation method of the polypropylene fiber supported by photocatalyst, the preparation steps are as follows:

[0056] The molar ratio of titanium isopropoxide: ethylene glycol: ethanol in the synthetic solution is 1:91:12, the content of hydrochloric acid is 0.1 mol / L, the structure directing agent L64 is 0.001 mol / L, and the GO is 0.12 mg / ml.

[0057] (1) Preparation of seed crystal treated polypropylene fiber: take a certain amount of TiO 2 Powder, configured as a 0.03% ethanol solution, ultrasonically stirred to make TiO 2 Uniformly disperse to form a seed liquid, and then soak the polypropylene fiber with a size of 5×5 cm in the seed liquid for 12 hours, then take it out and dry it at 80°C for later use.

[0058] (2) Liquid A: Use a precision electronic balance to take 0.25g (37wt%) hydrochloric acid and 1.05g titanium isopropoxide respectively in two small beakers, then slowl...

Embodiment 3

[0062] The two-dimensional ultra-high specific surface area rGO-TiO of this embodiment 2 The preparation method of the polypropylene fiber supported by photocatalyst, the preparation steps are as follows:

[0063] The molar ratio of titanium isopropoxide: ethylene glycol: ethanol in the synthetic solution is 1:95:20, the sulfuric acid content is 0.5 mol / L, the structure directing agent P123 is 0.005 mol / L, and GO is 0.18 mg / ml.

[0064] (1) Preparation of seed crystal treated polypropylene fiber: take a certain amount of TiO 2 Powder, configured as a 0.3% ethanol solution, ultrasonically stirred to make TiO 2 Uniformly disperse to form a seed liquid, and then soak the polypropylene fiber with a size of 5×5 cm in the seed liquid for 18 hours, and then take it out and dry it at 100°C for later use.

[0065] (2) Liquid A: use a precision electronic balance to take 1.23g (96wt%) sulfuric acid and 1.05g titanium isopropoxide respectively in two small beakers, then slowly drop the...

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Abstract

The invention relates to a method for loading a two-dimensional visible photocatalytic material on a polymer fiber, directly bonding rGO‑TiO 2 The in-situ growth of nanosheets on the surface of the polymer fiber greatly reduces the risk of the catalytic material falling off, not only facilitates the recovery of the catalyst, but also greatly improves the utilization rate of the catalyst. At the same time, rGO‑TiO prepared by this method 2 Nanosheets compared to conventional granular TiO 2 , with ultra-high specific surface area and visible light response characteristics, higher catalytic activity. Therefore, the method of loading two-dimensional (2D) visible photocatalytic materials on organic polymer fibers according to the invention is very suitable for the field of photocatalytic wastewater treatment.

Description

technical field [0001] The invention belongs to the field of photocatalytic wastewater treatment, in particular to a method for loading a two-dimensional visible photocatalytic material on an organic polymer fiber, in particular to a method for loading a two-dimensional (2D) visible photocatalytic material on a polypropylene fiber (PPF). Background technique [0002] With the rapid increase of the global population and the acceleration of industrialization, the discharge of industrial wastewater is increasing day by day. At the same time, dye wastewater has complex components, high concentration, and poor biodegradability, and has become one of the most difficult to degrade industrial wastewater. In order to solve the problems of wastewater treatment and water resource recycling, finding an economical and effective water treatment method is the key to sustainable development and alleviating the shortage of clean water resources. At present, the commonly used wastewater treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38B01J35/10C02F1/30C02F101/30
CPCB01J31/38C02F1/30C02F2101/308B01J35/61B01J35/39
Inventor 景文珩于洁张圆徐亮仇健陈斌
Owner NANJING TECH UNIV
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