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Iodine antimony sulfide nanowire composite film taking polyvinylidene fluoride as substrate as well as preparation method and application of iodine antimony sulfide nanowire composite film

An antimony iodide sulfide nanometer technology and antimony sulfide nanometer technology are applied in the field of iodine antimony sulfide nanowire composite films and their preparation, and achieve the effects of reducing use cost, small solid powder size, easy separation, recovery and recycling.

Pending Publication Date: 2022-05-13
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Iodine antimony sulfide nanowire composite film taking polyvinylidene fluoride as substrate as well as preparation method and application of iodine antimony sulfide nanowire composite film
  • Iodine antimony sulfide nanowire composite film taking polyvinylidene fluoride as substrate as well as preparation method and application of iodine antimony sulfide nanowire composite film
  • Iodine antimony sulfide nanowire composite film taking polyvinylidene fluoride as substrate as well as preparation method and application of iodine antimony sulfide nanowire composite film

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Effect test

Embodiment 1

[0032] (1) Weigh 1.8428g of antimony element, 0.4853g of sulfur element, and 1.9208g of iodine element, and add them together into a stoppered test tube containing 8mL of absolute ethanol. Fix the stoppered test tube in an ultrasonic cleaner with an iron stand, adjust the ultrasonic power to 180W, and ultrasonicate for 2 hours at room temperature to obtain an iodine antimony sulfide ethanol gel.

[0033] (2) Transfer the iodine antimony sulfide ethanol gel into a vacuum drying oven, and dry it at 80°C for 12 hours to remove ethanol, and obtain the iodine antimony sulfide xerogel. 30 mL of deionized water was added to the dry gel for washing, and the resulting mixture was centrifuged at 9000 r / min for 5 min. Repeat the above washing and centrifugation steps 6 times.

[0034] (3) Transfer the solid obtained in the previous step to a petri dish, and pre-freeze at -5°C to -18°C for 12 hours. Pre-cool the freeze dryer to -45°C in advance, and put it into a petri dish to continue ...

Embodiment 2

[0040] (1) Weigh 1.8428g of antimony element, 0.4853g of sulfur element, and 1.9208g of iodine element, and add them together into a stoppered test tube containing 8mL of absolute ethanol. Fix the stoppered test tube in an ultrasonic cleaner with an iron stand, adjust the ultrasonic power to 180W, and ultrasonicate for 2 hours at room temperature to obtain an iodine antimony sulfide ethanol gel.

[0041](2) Transfer the iodine antimony sulfide ethanol gel into a vacuum drying oven, and dry it at 80°C for 12 hours to remove ethanol, and obtain the iodine antimony sulfide xerogel. 30 mL of deionized water was added to the dry gel for washing, and the resulting mixture was centrifuged at 9000 r / min for 5 min. Repeat the above washing and centrifugation steps 6 times.

[0042] (3) Transfer the solid obtained in the previous step to a petri dish, and pre-freeze at -5°C to -18°C for 12 hours. Pre-cool the freeze dryer to -45°C in advance, and put it into a petri dish to continue f...

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Abstract

The invention relates to an iodine antimony sulfide nanowire composite film with polyvinylidene fluoride as a substrate and a preparation method and application of the iodine antimony sulfide nanowire composite film. The preparation method comprises the following steps: firstly, synthesizing an iodine antimony sulfide nanowire by taking an antimony simple substance, a sulfur simple substance and an iodine simple substance as raw materials and adopting a sonochemical method; then, polyvinylidene fluoride is used as a film substrate, and a composite film product is prepared by adopting a phase inversion method. The method effectively solves the problems of difficult recovery of the existing similar powder photocatalyst and slow degradation rate of the film photocatalyst, and has the remarkable advantages of simple process, low cost, safety, harmlessness, high catalytic efficiency, energy conservation and the like. Degradation experiments show that the composite film achieves the degradation rate of 98.8% within 60 min for dye wastewater, and more importantly, the excellent degradation effect can be achieved only by using soft water flow as mechanical force.

Description

technical field [0001] The invention relates to the technical field of composite materials and sewage treatment, in particular to an iodine antimony sulfide nanowire composite film based on polyvinylidene fluoride, a preparation method and application thereof. Background technique [0002] With the continuous development and progress of society, environmental pollution and energy shortage have gradually become two major survival issues that all human beings focus on. Various disadvantages of traditional sewage treatment methods make it increasingly difficult to meet human requirements for water quality, and it is imminent to develop new water treatment methods. [0003] Semiconductor photocatalysis has great application value in sewage treatment and energy utilization because of its high catalytic activity, safety and convenience. The redox ability is reduced, and the traditional powder photocatalysts also face problems such as difficult recovery and poor recycling rate, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J31/06B01J35/00B01J35/02B01J35/06B01J37/34C02F1/30C02F101/30
CPCB01J27/06B01J31/069B01J37/343C02F1/30C02F2101/308B01J35/59B01J35/40B01J35/33B01J35/39
Inventor 刘晓芳汪若蘅何英杰王依诺张楠楠米尔阿力木·麦麦提图尔荪
Owner WUHAN UNIV OF TECH