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Magnetic-guide self-propelled micro/nano motor based on gamma-Fe2O3/MnO2 and preparation method of micro/nano motor

A micro-nano motor, -fe2o3 technology, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve problems such as not seen, achieve simple preparation process, excellent adsorption performance and recycling performance, The effect of common and easy-to-obtain raw materials

Active Publication Date: 2019-04-09
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, regarding the loading of ferric oxide and manganese dioxide (γ-Fe 2 o 3 / MnO 2 ) There are many related reports on micro-nano motors, but there are no reports about using kapok fiber as a biological template to load manganese dioxide and ferric oxide.

Method used

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  • Magnetic-guide self-propelled micro/nano motor based on gamma-Fe2O3/MnO2 and preparation method of micro/nano motor
  • Magnetic-guide self-propelled micro/nano motor based on gamma-Fe2O3/MnO2 and preparation method of micro/nano motor
  • Magnetic-guide self-propelled micro/nano motor based on gamma-Fe2O3/MnO2 and preparation method of micro/nano motor

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Effect test

Embodiment 1

[0027] Dissolve 0.03 mol of ferric chloride and 0.015 mol of ferric chloride in 50 mL of deionized water, put in kapok fiber and heat at 60°C for 3 hours, take out the kapok and wash it with deionized water for 2-3 times, put it into freeze-drying box dry. Afterwards, the dried samples were sintered under the protection of nitrogen, the temperature was raised to 550 °C at 10 °C / min and kept for 30 min, and the samples were taken out after cooling down to room temperature. Take 4.5 mg of the sintered sample and place it in 25 mL deionized water for ultrasonication to disperse the sintered sample in the solution, then add 11.06 mg of potassium permanganate and stir to dissolve, transfer it to a 50 ml polytetrafluoroethylene hydrothermal reaction kettle, React at 120 °C for 2 h, and cool to room temperature after the reaction is complete. The product was centrifuged with a high-speed centrifuge at 3000 rpm for 5 min, washed with deionized water, and kept at 60°C for 48 h to obta...

Embodiment 2

[0029] By configuring H 2 o 2 solution into γ-Fe 2 o 3 / MnO 2 The micro-nano motor is placed on an optical microscope for shooting, and an external magnetic field is applied to control the direction of movement of the micro-nano motor.

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Abstract

The invention discloses a magnetic-guide self-propelled micro / nano motor based on gamma-Fe2O3 / MnO2 and a preparation method of the micro / nano motor. Kapok fiber is used as a template, gamma-Fe203 andMnO2 are supported, and the magnetic-guide self-propelled micro / nano motor based on gamma-Fe2O3 / MnO2 is prepared. The micro / nano motor can reach inaccessible polluted areas for cleaning treatment through magnetic guide and bubble drive and recovery gamma-Fe2O3 through an external magnetic field after tretament to avoid secondary pollution. Preparation raw materials are ordinary and easy to obtain,the cost is low, the preparation process is simple, green and environmentally friendly, and the prepared micro-nano motor has excellent adsorption performance and recycling performance and potentialapplication values in the environmental protection field.

Description

technical field [0001] The invention belongs to the technical field of micro-nano motors, in particular to a γ-Fe-based 2 o 3 / MnO 2 Magnetic self-propelled micro-nano motor and its preparation method. Background technique [0002] Since the first report of the synthesis of micro-nanomotors in 2004-2005, a new chapter in the research of micro-nanomotors has been opened. Self-propelled catalytic micro-nanomotors capable of converting energy into motion have shown great promise for various practical applications. Although initial efforts have focused on biomedical applications of micro- and nanoscale motors, they also have great potential for various environmental applications. In particular, micro-nanomachines have been shown to add motion-based decontamination processes of new dimensions and lead to new "on-the-fly" repair protocols with higher efficiency, shorter cleaning times, and lower costs. The continuous movement of these microscale objects can be used to delive...

Claims

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Application Information

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IPC IPC(8): D06M11/49D06M11/48B01J20/28B01J20/06C02F1/28D06M101/40C02F101/30
CPCB01J20/06B01J20/28009C02F1/281C02F2101/308D06M11/485D06M11/49D06M2101/40
Inventor 郑婵吴修凯戴品强黄聿娟陈玲
Owner FUJIAN UNIV OF TECH
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