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Synthesis method of homogeneous polypyrrole nanowire arrays for three-dimensional electrode based on internal filtering flow

A polypyrrole nanowire and three-dimensional electrode technology is applied in the field of synthesis of polypyrrole nanowire arrays, which can solve problems such as unfavorable nanowire material synthesis, uneven growth of polypyrrole nanowire arrays, and the like, and achieve the effect of improving application performance.

Active Publication Date: 2021-06-11
JINAN UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

However, limited by the porous characteristics of three-dimensional materials, the concentration difference of the synthesis solution on the surface of the three-dimensional electrode and in the pores will lead to uneven growth of polypyrrole nanowire arrays (PPyNWs) under low-speed stirring and mixing; In the mixed state, the concentration difference between the surface of the three-dimensional electrode and the pores of the synthetic liquid can be reduced, but the stirring and scouring action of the fluid will lead to the lodging and cluster growth of polypyrrole nanowire arrays (PPyNWs), which is not conducive to nanowire materials. Synthesis; Moderate stirring speed has higher requirements on the pore size and thickness of three-dimensional materials

Method used

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  • Synthesis method of homogeneous polypyrrole nanowire arrays for three-dimensional electrode based on internal filtering flow
  • Synthesis method of homogeneous polypyrrole nanowire arrays for three-dimensional electrode based on internal filtering flow
  • Synthesis method of homogeneous polypyrrole nanowire arrays for three-dimensional electrode based on internal filtering flow

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Effect test

Embodiment 1

[0038] Steps for synthesizing polypyrrole nanowire arrays (PPyNWs) by internal filtration flow: using carbon fiber mats with a diameter of 5 cm as cathode and anode electrodes to prepare polypyrrole nanowire composite materials, and constructing an internal filtration flow synthesis device. The synthetic solution is prepared by mixing 100ml of phosphate buffer solution with a molar concentration of 0.2mol / L, 100ml of pyrrole with a molar concentration of 0.1mol / L, and 100ml of p-toluenesulfonic acid with a molar concentration of 0.1mol / L. The external voltage was 5V, the running time was 60min, and the flow rate was 10mL / min. During the reaction period, the position of the cathode and the direction of water flow were changed every 5 minutes, for a total of 12 times. After stopping the reaction, the carbon fiber felt at the anode position was washed with pure water to obtain polypyrrole nanowire arrays (PPyNWs). Please refer to figure 1 .

[0039] When the external voltage is...

Embodiment 2

[0043] Example 2: Only Example 1 is changed.

[0044] A graphene sponge with a diameter of 10 cm was used as the cathode and anode electrodes to prepare polypyrrole nanowire composite materials, and an internal filter flow synthesis device was constructed. The volume of the synthesis liquid was 500 mL, and the concentration was the same as in Example 1. The external voltage is 1.5V. The flow rate was 100 mL / min. The running time is 60 minutes, the adjustment time of water flow direction and cathode position is 10 minutes, and the replacement is 6 times in total. After the reaction is stopped, the graphene sponge at the anode position is washed with pure water to obtain a polypyrrole nanowire array (PPyNWs) electrode.

[0045] When the external voltage is 1V, the hydraulic retention time is 15min, and the concentration of E. coli in the influent is 10 4 In the case of CFU / mL, the flow rate is 1000-4000L / m 2 / h, the polypyrrole nanowire arrays (PPyNWs) synthesized by the int...

Embodiment 3

[0046] Example 3: Only Example 1 is changed.

[0047] Polypyrrole nanowire composites were prepared by using carbon fiber felt with a diameter of 5 cm as the cathode and anode electrodes, and three sets of internal filtration flow synthesis devices were constructed. The synthetic liquid volume is 300mL, and concentration is the same as embodiment 1. The external voltage was 2.3V, the running time was 30min, and the flow rates were set to 10, 50, and 100mL / min. During the reaction period, the position of the cathode and the direction of water flow were changed every 5 minutes, a total of 6 times. After the reaction is stopped, the carbon fiber felt at the anode position is washed with pure water to obtain polypyrrole nanowire arrays (PPyNWs). For details, see Figure 5 .

[0048] When the external voltage is 1V, the hydraulic retention time is 15min, and the concentration of E. coli in the influent is 10 4 In the case of CFU / mL, the flow rate is 1000-4000L / m 2 / h, the poly...

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Abstract

The invention discloses a synthesis method of homogeneous polypyrrole nanowire arrays for a three-dimensional electrode based on internal filtering flow. According to the synthesis method, a form of pairing a single anode and double cathodes is adopted, and the position of the cathode paired with the anode and the direction of water flow are changed to synthesize the homogeneous polypyrrole nanowire arrays (PPyNWs) on the surface of a three-dimensional electrode material and in the three-dimensional electrode material. According to the method disclosed by the invention, reaction conditions are simple and easy to control, the method is suitable for generating the homogeneous polypyrrole nanowire arrays on the surface of a three-dimensional porous material and in the three-dimensional porous material, and the application performance of polypyrrole nanowires is improved.

Description

technical field [0001] The invention belongs to the technical field of synthesis of conductive polymer nanomaterials, and in particular relates to a method for synthesizing a polypyrrole nanowire array uniformly grown on an inner filter flow three-dimensional electrode substrate. Background technique [0002] Conductive polymers refer to polymer materials whose electrical conductivity is between that of conductors and insulators after treatment by technical means such as doping. Typical representatives include polyacetylene, polythiophene, and polypyrrole. Polypyrrole (PPy) has become a major research hotspot in the development of conductive polymers due to its good chemical and thermodynamic stability, relatively high electrical conductivity, and easy synthesis. At present, conductive polypyrrole has been widely used in artificial muscles, electrode materials, sensors, catalysts, metal protective coatings and other fields. [0003] With the development of nanomaterial synt...

Claims

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Application Information

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IPC IPC(8): C08G73/06H01G11/36H01G11/86
CPCC08G73/0611H01G11/36H01G11/86
Inventor 刘海皮霜玉王旸张佳春秀王文宜孙明英梁草
Owner JINAN UNIVERSITY
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