Fabrication Of Smart Device With Diving-surfacing Cycle And The Research Of Functionally Cooperating Systems

Recently, functionally cooperating systems, which are defined as theintegration of two or more smart materials or surfaces into one devicewhich then act in an orderly manner for a complex function or a givenintention, have gained increasing attention. In this paper, we hope to buildthe functionally cooperating devices by stimuli-responsive functionalmaterials, and then develop the concept of functionally cooperating smartsystems. Through combing pH and hydrogen peroxide responsive smartmaterials in one device, we constructed a smart device withdiving-surfacing cycle by synergistic effect mimicking the submarine.Furthermore, we designed and built the new system of functionallyintegrated oil/water separation device. Finally, we tested the advantagesof functionally integrated system and the values in practical application.The main contents in this paper as following:1, Fabricated a smart surface with pH stimuli-responsive on thesubstrate of Nickel foam materials. We found that the smart surface ofNickel foam can be fabricated and modified by combining electrolessmetal deposition and self-assembly monolayer techniques. The result is that: when adjusting the concentration of HF/AgNO3to5M and20mM,the surface of Nickel foam could be covered by micro/nano roughstructure. Then the self-assembly monolayer can be formed by immersingthe substrate in the mixture ethanol solution of HS(CH2)9CH3andHS(CH2)10COOH with molar ratio of6:4. Under this condition, the smartsurface shows excellent pH responsive. The surface is superhydrophobicin the acid condition and superhydrophilic in basic condition.2, Realized the fabrication of diving-surfacing cycle withstimuli-responsive functionally cooperating smart device. The surface ofthe smart device can be intelligence by the methods described above andthe device with the function of pH and hydrogen peroxide cooperatingresponse. When changing the pH of solution from acid to basic, water canenter to the inner of the device, which makes it diving. Then adjusting toacid again and adding a certain volume of H2O2, water in the device willbe exhausted by the reaction of the platinum in the cube catalyzed thedecomposition of H2O2and generated oxygen bubbles. Due to thesuperhydrophobic walls of the NFC, the oxygen bubbles attach andaccumulate on the surface and in the cube, thus reducing the total densitymakes the device surfacing.3, We have fabricated a multifunctional device for highly efficientand inexpensive oil spill cleanup by combining electroless metaldeposition with self-assembled monolayers, which has integrated the functions of oil containment booms, oil-sorption materials, oil skimmers,and water oil separating devices. This functionally integrated device has alower density than that of water, which leads to a potential application asoil containment booms; with the water oil separating yield of theas-prepared device being up to92%. The device has the advantages ofhigh efficiency, capacity of anti-wave, and reproducibility, which issuitable for many types of organic solvents or oils, even for emulsion ofpetroleum...