Visible light driven Cu2O@N-CNTs compound microsphere motor taking glucose as fuel and preparation method thereof

Abstract

The invention discloses a method for preparing a visible light driven Cu2O@N-CNTs compound microsphere motor taking glucose as fuel. The method is characterized by comprising the following steps: a) dispersing N-CNTs in an ethanol solution, and performing ultrasonic dispersion treatment; b) dissolving copper acetate and sodium dodecyl sulfate into water, adding the solution into the dispersed ethanol solution in the step a), and adding ethanol; c) heating the mixed solution obtained in the step b) in an oil bath; d) adding sodium hydroxide and glucose, and reacting until the product is obtained; and e) centrifugally cleaning the product with deionized water, and drying, thereby obtaining the Cu2O@N-CNTs compound microsphere motor. The visible light driven Cu2O@N-CNTs compound microsphere motor taking glucose as fuel prepared by the method disclosed by the invention is excellent in uniformity, excellent in repeatability, simple and feasible in preparation method, low in cost, excellentin economic benefits and suitable for large-scale industrial production, and has wide application prospects in the fields of environmental cleaning and biomedical treatment.

Description

technical field [0001] The invention relates to the field of multifunctional inorganic materials, and specifically designs a Cu 2 O@N-CNTs composite microsphere motor and its preparation method. Background technique [0002] Micro-nano motors refer to devices that are at the nanometer or micrometer level, can move, have special functions or can perform microscopic system tasks. Because of its good application prospects in the fields of chemistry, environment and biomedicine, micro-nano motors have become an important frontier research direction in the field of nano-engineering. In recent years, micro-nano motors have developed rapidly, and great progress has been made in preparation methods and application fields. [0003] Micro-nano motor is a micro-nano functional material with self-driving characteristics, which converts various external energies (light, sound, magnetism, electricity, chemical energy, etc.) into movable micro-devices with mechanical energy. After more ...

AI Technical Summary

Problems solved by technology

[0004] However, there are three problems in the current light-driven micro-nano motors. On the one hand, the operating environment of light-driven micro-nano motors is not safe and friendly. Most motors use hydrogen peroxide, organic dyes, methanol, etc. as fuel liquids. These fuel liquids It is toxic to organisms; on the other hand, light-driven micro-nano motors mostly realize movement under the excitation of ultraviolet light or infrared light, and ultraviolet light and infrared light will cause damage to biological tissues. The use of environmentally friendly visible light as the excitation light source There are relatively few studies; finally, in a safe and friendly solution environment, visible light-driven micro-nano motors cannot meet the needs of practical applications due to low photocatalytic efficiency and slow motor movement

[0005] In the previous work, the researchers prepared BiOI / Au Janus microsphere motors, which used pure water as the fuel liquid to achieve movement under visible light, but the movement speed was only 1.6 μm / s, which was far from meeting the needs of practical applications.

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