High specific surface hollow tubular micromotor, preparation method and application

A micro-motor, high specific surface technology, applied in the direction of material electrochemical variables, can solve the problems of high cost, small specific surface area, difficult to control surface structure, etc., and achieve the effect of low cost, high biocompatibility and abundant yield

Active Publication Date: 2019-10-11
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems that the existing tubular motors mostly use precious metal Pt as the catalytic medium, the cost is high, the specific surface area is small, and the surface structure is difficult to control. The purpose of the present invention is to provide a high specific surface hollow tubular micron motor and its preparation process , with cheap MnO 2 As a catalytic medium, through the combination of cathodic deposition and anode deposition, the inner layer of manganese dioxide with high specific surface is synthesized to improve the degradation efficiency of organic pollutants

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  • High specific surface hollow tubular micromotor, preparation method and application
  • High specific surface hollow tubular micromotor, preparation method and application
  • High specific surface hollow tubular micromotor, preparation method and application

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preparation example Construction

[0050] In the specific preparation process, including the preparation of polyethylene dioxythiophene PEDOT support outer layer, the electrodeposition preparation of Fe intermediate layer and MnO 2 Electrodeposition preparation of catalytic inner layers.

[0051] As a preferred solution, in the high specific surface hollow tubular micro motor, the deposited charge of the PEDOT support outer layer is 0.2-0.4C, the deposited charge of the Fe intermediate layer is 0.3-0.6C, MnO 2 The amount of deposited charge is 0.1 ~ 0.5C.

[0052] The particularly preferred specific surface structure is the nanoscale fish scale intercalation structure, which can maximize the chemically driven contact area and play the role of MnO 2 Decomposition synergy as a catalyst. Among them, preferably, the deposition charge of the Fe intermediate layer is 0.4C.

[0053] As shown in the accompanying drawings, the preparation of the high specific surface hollow tubular micromotor of the present invention...

Embodiment 1

[0072] In embodiment 1, the electrochemical deposition of preferred each step all adopts constant potential method, and deposition parameter is as follows:

[0073] The electrodeposition parameter setting of the PEDOT support outer layer: set the deposition voltage to 0.8-1.0V, and deposit a charge of 0.2-0.4 coulombs;

[0074] Parameter setting of the electrodeposition of the Fe interlayer: set the deposition voltage to -0.8--1.2V, and deposit a charge of 0-0.6 coulomb; especially preferably a charge of 0.3-0.6 coulomb.

[0075] MnO 2 The electrodeposition parameter setting of the inner layer: set the deposition voltage to 0.8-1.2V, and deposit 0.1-0.5 coulombs of charge.

[0076] As described in the previous steps, through the above electrolyte system and electrochemical deposition treatment, the PEDOT outer layer, Fe middle layer and MnO 2 The polycarbonate film in the inner layer is finally polished and dissolved to obtain a hollow tubular micro-motor (PEDOT / Fe-MnO 2 ),...

Embodiment 2

[0088] Using the electrochemical deposition method of the above steps 1-4, and using the electrolyte system and the three-electrode system in the above-mentioned embodiment, a PEDOT outer layer, an Fe middle layer and MnO are prepared. 2 The polycarbonate film in the inner layer is finally polished and dissolved to obtain a hollow tubular micro-motor (PEDOT / Fe-MnO 2 ), which has polyethylenedioxythiophene as the supporting outer layer of hollow microtubes and Fe-doped MnO 2 The inner layer, wherein the electrodeposition parameters are as follows:

[0089] The electrodeposition parameter setting of the PEDOT support outer layer: set the deposition voltage to +0.8V, and deposit a charge of 0.2 to 0.4 coulombs;

[0090] Electrodeposition parameter setting of the Fe interlayer: set the deposition voltage to -1.0V, and deposit a charge of 0.3 coulombs;

[0091] MnO 2 The electrodeposition parameter setting of the inner layer: the deposition voltage is set to 1.0V, and the amount...

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Abstract

The invention relates to the field of preparation and application of man-made micro motors and provides a high-ratio surface hollow tubular micron motor, a preparation method and application. The micron motor is a chemically driven tubular micron motor and aims to solve the problems that most existing tubular motors adopt metal Pt as a catalytic medium, cost is high, the specific surface area is small, and surface structure control is difficult. According to the preparation method, cheap MnO<2> is used as the catalytic medium, convenient electrochemical deposition by a template method is adopted as a preparation means, a PEDOT micron tube is synthesized first, then a Fe layer is electrically deposited on the inner surface of the PEDOT micron tube, an MnO<2> inner layer is prepared throughanodic deposition on the basis of a Fe intermediate layer obtained through cathodic deposition, therefore, the high-ratio surface hollow tubular MnO<2> micron motor with the inner surface of a nanometer scale intercalation structure is prepared, and effective degradation of organic dyestuff, namely methylene blue in an aqueous solution is realized.

Description

technical field [0001] The invention relates to the field of preparation and application of micro motors, in particular, a simple template electrochemical synthesis method is adopted, specifically, MnO is prepared by anodic deposition on the basis of an Fe intermediate layer obtained by electrochemical deposition. 2 inner layer, thus preparing a tubular micromotor with high specific surface area. Background technique [0002] With the development of nanoscience and nanotechnology, self-propelled micro / nanomachines capable of converting local fuel or external energy into nanoscale motion have become powerful tools for active drug delivery, environmental restoration, biodiagnostics, and cell manipulation. There are many methods for synthesizing micromotors, including electrodeposition, template method, conventional physical vapor deposition, grazing angle deposition, curling method, 3D laser direct writing, etc. Against this background, in the past nearly two decades, great e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
Inventor 刘文娟戈宏彬陈笑
Owner NANJING TECH UNIV
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