Preparation of flexible piezoelectric liner tube and application of flexible piezoelectric liner tube in self-driven degradation of organic pollutants
An organic pollutant, flexible piezoelectric technology, applied in water pollutants, manufacturing/assembly of piezoelectric/electrostrictive devices, electrochemical water/sewage treatment, etc. Remarkable degradation effect performance, high energy utilization rate, significant piezoelectric effect
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Embodiment 1
[0029] Example 1: MoS 2 / Fe 3 O 4 The preparation and application of / PVDF flexible piezoelectric liner, the specific preparation and application methods are as follows.
[0030] (1) Preparation of MoS 2 / Fe 3 O 4 Nanospherical Piezoelectric Catalysts:
[0031] S1 Weigh a certain amount of ferrous sulfate heptahydrate and dissolve it in 500 mL of deionized water, and adjust the pH to a weakly alkaline condition;
[0032] S2 transfers the solution to the reaction kettle at 150°C for 10h, and after the end, it is collected by filtration and vacuum-dried to obtain ferric oxide powder;
[0033] S3 Weigh a certain amount of anhydrous sodium molybdate and thiourea and place them in 30 mL of deionized water to fully dissolve; and adjust the pH of the solution to a weakly acidic condition;
[0034] S4 weighs 0.1g of ferric oxide powder and puts it into the S3 solution, and transfers it to the reaction kettle after ultrasonic uniformity;
[0035] In the S5 reactor, the reaction...
Embodiment 2
[0047] Example 2: Preparation and application of ZnO / CQDs / PVP flexible piezoelectric liner material. The specific preparation and application methods are as follows.
[0048] (1) Preparation of ZnO / CQDs sheet piezoelectric catalyst:
[0049] S1 Weigh 4g of citric acid and add it to 50mL of deionized water to dissolve, and add a certain amount of ethylenediamine;
[0050] S2 transfers the solution to the reaction kettle for 10h at 180°C, and uses a 1500da dialysis bag to filter after the end;
[0051] S3 collects the dialysate by rotary evaporation, and freeze-dries to obtain CQDs powder;
[0052] S4 weighs a certain amount of zinc acetate dihydrate and urea and dissolves it in 100 mL of deionized water, and forms a homogeneous solution under repeated stirring;
[0053] S5 Add 1 g of S3 CQDs powder to the solution and continue to stir until uniform, transfer to a hydrothermal kettle for reaction at 180 °C for 12 h, and filter and dry to obtain ZnO / CQDs piezoelectric catalytic...
Embodiment 3
[0065] Example 3: Preparation and application of CdS / PTFE flexible piezoelectric liner material. The specific preparation and application methods are as follows.
[0066] (1) Preparation of CdS feather-like piezoelectric catalyst:
[0067] S1 weighs cadmium chloride pentahydrate and thiourea in a molar ratio of 1:5 and mixes it into 300 mL of deionized water to dissolve;
[0068] S2 Transfer the solution to the reaction kettle and react at 200°C for 12h, filter and wash the reacted suspension for several times and then dry;
[0069] S3 calcined the dried powder in nitrogen atmosphere for 4 h to obtain a feathery CdS piezoelectric catalyst.
[0070] (2) Preparation of PTFE piezoelectric base fluid:
[0071] S1 Weigh 5g of PTFE piezoelectric organic polymer, dissolve it in 50g of acetone, disperse it under ultrasonic conditions for 180 minutes, place it in a water bath, and stir at 50°C for 60 minutes to obtain a uniform PTFE base liquid;
[0072] S2 quickly transfers the pre...
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