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ACS Appl Mater Interfaces. 2018 Jan 31;10(4):4095-4101. doi: 10.1021/acsami.7b16930. Epub 2018 Jan 16.

Dual-Responsive Self-Propulsion Smart Device Steadily Driven by CO2 and H2O2.

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Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin 150001, China.
School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.


In this paper, we introduce a kind of tertiary amine-based CO2-responsive material combining with the H2O2-responsive material to develop a dual-responsive self-propulsion smart device which can convert the chemical energy of H2O2 into mechanical energy steadily through diving-surfacing cycles. In this dual-responsive device, the CO2-responsive material is designed as a wettability conversion species, which is wrapped with a strip of platinum to catalyze the decomposition of H2O2 to generate gaseous O2 to realize surfacing. In deionized water, the device floats on the surface of the water initially and can perform a diving-surfacing cycle when CO2 and H2O2 stimuli are alternately applied to the aqueous solution. The cyclic movement of the device can be realized by the generation and release of the inner gas through the hydrophobic cover, leading to a new controllable transition of different kinds of energy.


CO2-responsive; H2O2-responsive; diving−surfacing; self-propulsion; wettability


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