Controllable Locomotion And Applications Of Functionally Cooperating Smart Devices

In this thesis,the controllable locomotion of functionally cooperating smart devices is taken as the starting point,and the applications in energy conversion and oil-water separation is studied.In terms of energy conversion,a light-responsive functionally cooperating smart device is prepared as a mini-generator.For the first time,it is possible to directly collect the sunlight from the environment for the vertical motion of the device,and realize the conversion from kinetic energy to electricity in combination with Faraday’s law of electromagnetic induction.In the aspect of oil-water separation,the chemical reaction of platinum-catalyzed hydrogen peroxide to generate oxygen bubbles is introduced into the system.Combined with the drag reduction function and oil absorption capacity of the superhydrophobic/superoleophilic materials,the "active" oil-water separation is realized for the first time,which allows the device to spontaneously capture oil on the water surface and achieve in-situ oil-water separation.The specific work is as follows:(1)Based on the copper foam,a superhydrophilic container and a superhydrophobic cylinder were prepared by electroless metal deposition and modification of low-surface-free-energy substance,and they were assembled into a smart device together with the magnets.Near infrared light and sunlight are applied for the cycled diving-surfacing process of the smart device,and combined with Faraday’s electromagnetic induction law,the effective conversion of light energy to kinetic energy then to electricity is realized.The relationship between the induced voltage and energy conversion efficiency and near infrared light power is explored.In addition,the lifetime of the smart device is investigated,and the application of output power is further realized.(2)Based on the nickel foam,a superhydrophobic/superoleophilic boat was prepared by electroless metal deposition and modification of low-surface-free-energy substance.A gold-plated glass was taken as the substrate to prepare a platinum sheet by electrochemical deposition.Attach the platinum sheet to the tail of the superhydrophobic/superoleophilic boat to assemble a smart device.The oxygen bubbles generated by the decomposition of the platinum-catalyzed hydrogen peroxide propel the smart device to move horizontally on the water surface,and spontaneously capture the oil,realizing the in-situ oil-water separation process.