Polyphenol-mediated prussian blue/quartz nano composite film and preparation method and application thereof

A Prussian blue and nanocomposite technology, applied in the field of Prussian blue/quartz nanocomposite film and its preparation, achieves the effect of simple operation process, good stability and good organic dye degradation performance

Active Publication Date: 2020-08-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reports about the use of Prussian blue and tannic acid-related materials in the field of oil-water separation.

Method used

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  • Polyphenol-mediated prussian blue/quartz nano composite film and preparation method and application thereof
  • Polyphenol-mediated prussian blue/quartz nano composite film and preparation method and application thereof
  • Polyphenol-mediated prussian blue/quartz nano composite film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A quartz membrane with a thickness of 0.4 mm was immersed in FeCl with a concentration of 1 mg / mL 3 and 4 mg / mL TA with a volume ratio of 1:1, rinsed in water for 5 min, and dried in an oven at 45°C for 2 min; then immersed the omentum in 1 mg / mL FeCl 3 solution, reacted for 2 min and dried at 45°C, and finally immersed the omentum in 1 mg / mL potassium ferrocyanide solution, rinsed in clean water after reacting for 5 min, and dried in an oven at 45°C to obtain PB / TA-Fe@QF composite membrane.

[0031] The surface morphology characteristics of the prepared PB / TA-Fe@QF composite film and the quartz film before modification were observed by scanning electron microscope (SEM). figure 1 It is the SEM image of the prepared PB / TA-Fe@QF composite film and the quartz film before modification; in the figure, (a) is the quartz film before modification, and (b) is the prepared PB / TA-Fe@QF composite film ;Depend on figure 1 It can be seen that the prepared PB / TA-Fe@QF composite m...

Embodiment 2

[0034] A quartz membrane with a thickness of 0.5 mm was immersed in FeCl with a concentration of 0.5 mg / mL 3 and 2.5 mg / mL TA with a volume ratio of 1:1, rinsed in clean water after 2 min, and dried in an oven at 45 °C for 2 min; then immersed the omentum in 0.5 mg / mL FeCl 3 After reacting for 2 minutes, place it in an oven at 55°C to dry, and finally immerse the omentum in 0.5 mg / mL potassium ferrocyanide solution, react for 5 minutes, then rinse it in clean water, and put it in an oven at 45°C Dry in medium to obtain PB / TA-Fe@QF composite membrane.

Embodiment 3

[0036] A quartz membrane with a thickness of 0.6 mm was immersed in FeCl with a concentration of 1 mg / mL 3 and 3 mg / mL TA with a volume ratio of 1:1, rinsed in clean water after 2 min, and dried in an oven at 45 °C for 2 min; then immersed the omentum in 10 mg / mL FeCl 3 After reacting for 2 minutes, place the omentum in a 45°C oven to dry, and finally immerse the omentum in 10 mg / mL potassium ferrocyanide solution, react for 5 minutes, then rinse it in clean water, and put it in a 45°C oven Dry in medium to obtain PB / TA-Fe@QF composite membrane.

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Abstract

The invention belongs to the technical field of preparation of environmental functional materials, and particularly relates to a polyphenol-mediated prussian blue / quartz nano composite film and a preparation method and application thereof. With a simple impregnation method, tannic acid and iron ion complexes TA-Fe and Prussian blue PB are stacked and loaded on the surface of a quartz film layer bylayer, and the PB / TA-Fe (at) QF composite membrane with super-hydrophilic-underwater super-oleophobic performance similar to that of a lotus leaf surface organic-inorganic bionic structure is constructed; the preparation method of the composite membrane is simple, quick and cheap in operation process without wastes, and conforms to the concept of environmental friendliness. The PB / TA-Fe (at) QF composite membrane prepared by the method has an excellent oil-water separation effect and is suitable for separation of various oils and emulsions, and the separation rate reaches 99% or above; the composite membrane has good stability and recyclability, and still keeps good oil-water separation efficiency after the oil-water emulsion is repeatedly used for 10 times; and the composite membrane hasgood organic dye degradation performance and wide commercial application prospects.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and in particular relates to a polyphenol-mediated Prussian blue / quartz nanocomposite film and its preparation method and application. Background technique [0002] The oily sewage and domestic sewage discharged by petrochemical, metallurgical, pharmaceutical and other industries have increased sharply. Due to the lack of self-degradation and purification capabilities, they have caused serious harm to animal and plant growth, human health and the ecological environment. Conventional oil-water separation techniques, such as gravity, centrifugation, flotation, and biological methods, can effectively separate immiscible oil-water mixtures, but often fail when dealing with surfactant-stabilized emulsions. Membrane filtration technology has attracted the attention of many researchers due to its advantages of simple operation, low energy consumption, and no pha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/06B01D17/04B01D67/00B01D69/02B01D69/12B01D71/02B01J31/16B01J35/06C02F1/30C02F1/72C02F101/30
CPCB01D71/06B01D71/027B01D69/12B01D69/02B01D67/0079B01J31/1691B01J35/004B01J35/065B01D17/04C02F1/30C02F1/725B01D2325/10B01D2325/36B01D2325/38C02F2305/10C02F2101/308Y02W10/37
Inventor 王璐璐黄智康李高翔李桐刘洪波张瑞龙戴江栋
Owner JIANGSU UNIV
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