Bubble-propelled microactuator with micro/nano hierarchical porous structure and preparation method thereof

A micro-actuator and porous structure technology, applied in the direction of nanostructure manufacturing, specific nanostructure formation, chemical instruments and methods, etc., can solve the problems of not having a hierarchical porous structure, complex multi-step preparation methods, etc., and achieve simple functional modification Ease of use, high application value, and the effect of increasing the functional surface area

Active Publication Date: 2022-02-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, although a variety of bubble-propelled microactuators have been prepared using different methods, they do not possess hierarchical porous structures and often require complex multi-step fabrication methods

Method used

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  • Bubble-propelled microactuator with micro/nano hierarchical porous structure and preparation method thereof
  • Bubble-propelled microactuator with micro/nano hierarchical porous structure and preparation method thereof
  • Bubble-propelled microactuator with micro/nano hierarchical porous structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] In this example, a bubble-propelled micro-actuator with a micron / nano hierarchical porous structure was prepared, and the schematic diagram of the preparation process is shown in figure 1 As shown, the steps are as follows:

[0068] (1) Preparation of internal phase, intermediate phase, external phase fluid and collection solution

[0069] Prepare internal phase fluid: Dissolve Pluronic F-127 in deionized water to obtain internal phase fluid A. The mass ratio of water to Pluronic F-127 in internal phase fluid A is 1:0.01; Pluronic F-127 and glycerol Dissolve in deionized water to obtain internal phase fluid B. In internal phase fluid B, the mass ratio of deionized water, Pluronic F-127 and glycerin is 1:0.01:1.

[0070] Preparation of interphase fluid: Mix ETPTA, BB, PGPR, HMPP, and nano-magnetic catalytic particles uniformly to obtain an interphase fluid. In the interphase fluid, the volume ratio of ETPTA to BB is 6:4. Contains 0.2gPGPR, 0.01mL HMPP, 0.005g nano-mag...

Embodiment 2

[0080] In this example, a bubble-propelled micro-actuator with a micron / nano hierarchical porous structure is prepared, and the steps are as follows:

[0081] (1) Preparation of internal phase, intermediate phase, external phase fluid and collection solution

[0082] Prepare internal phase fluid: Dissolve Pluronic F-127 in deionized water to obtain internal phase fluid A. The mass ratio of water to Pluronic F-127 in internal phase fluid A is 1:0.01; Pluronic F-127 and glycerol Dissolve in deionized water to obtain internal phase fluid B. In internal phase fluid B, the mass ratio of deionized water, Pluronic F-127 and glycerin is 1:0.01:1.

[0083] Preparation of interphase fluid: Mix ETPTA, BB, PGPR, HMPP, and nano-magnetic catalytic particles uniformly to obtain an interphase fluid. In the interphase fluid, the volume ratio of ETPTA to BB is 6:4. Contains 0.2gPGPR, 0.01mL HMPP, 0.02g nano-magnetic catalytic particles; the nano-magnetic catalytic particles are Fe 3 o 4 @Ag ...

Embodiment 3

[0092] In this example, the effect of sodium dodecyl sulfate (SDS) concentration on the motion of the micro-actuator provided by the present invention was studied.

[0093] The micro-actuator prepared in Example 1 was added with 30% (v / v) H containing different concentrations of SDS 2 o 2 , observe the movement of the micro-actuator, the results are as follows Figure 10 As shown, the maximum motion speed of the microactuator in the above solution is 255.2 μm s -1 , Figure 11 is the variation curve of the micro-actuator movement rate with the concentration of SDS.

[0094] Add 30% (v / v) H containing different concentrations of SDS to the microdrive prepared in Example 2 2 o 2 , observing the movement of the micro-actuator, the maximum speed of the micro-actuator can reach ~1646.2μm s -1 .

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Abstract

The invention provides a bubble-propelled micro-actuator with a micro / nano hierarchical porous structure and a preparation method thereof. The micro-actuator is a microparticle composed of a polymer matrix material and nano magnetic catalytic particles, and the nano magnetic catalytic particles are composed of magnetic nano Particles and catalysts loaded on magnetic nanoparticles. The polymer matrix material has micro-scale pores and nano-scale pores. The micro-scale pores are formed by connecting two spherical cavities and the two spherical cavities are open on the surface of the micro-particles. The nanomagnetic catalytic particles are distributed in the polymer matrix material around the opening of one of the spherical cavities on the surface of the microparticles. The invention can improve the mass transfer rate while increasing the functional surface area of ​​the micro-driver, increase the capture and degradation efficiency of pollutants, simplify the preparation process of the micro-driver, reduce the production cost and realize continuous production.

Description

technical field [0001] The invention belongs to the field of micro-actuators, and relates to a bubble-propelled micro-actuator with a micron / nano hierarchical porous structure and a preparation method thereof. Background technique [0002] In recent years, self-propelled microactuators using chemical energy have attracted extensive attention in the fields of water remediation, drug delivery, cargo transportation, detection and analysis, and environmental monitoring. Bubble-propelled microactuators with hierarchical porous structures play an important role in efficient water treatment, where their bubble-propelled motion can facilitate mass transfer and their hierarchical porous structure can effectively capture pollutants. These microactuators use active substances such as Ag, Mg, Zn, Pt, and catalase to decompose chemical fuels to form bubbles, and enhance fluid turbulence through bubble-propelled motion, thereby effectively degrading or capturing pollutants. [0003] Bubb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30B82B3/00B82Y40/00C02F101/30C02F101/20
CPCB82B3/0009B82B3/0038B82Y40/00C02F1/30C02F2305/10C02F2305/08C02F2101/20
Inventor 苏瑶瑶汪伟褚良银张茂洁邓传富彭减刘壮巨晓洁谢锐
Owner SICHUAN UNIV
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