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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Ag/Ag2O Electroosmotic Pump Made of Polydisperse Silica Particles

2012년 2월 16일 09시 51분 49초
ELEC.P-1240 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 25일 (수요일) 18:00~21:00
저자 및
엄태민, 신운섭
서강대학교 화학과, Korea
The Ag/Ag2O/SiO2/Ag/Ag2O electroosmotic pump is non-gassing and energy efficient. The water is driven by protons produced in the anode reaction, 2Ag(s) + H2O → Ag2O(s) + 2H+ + 2e- , traveling through the porous membrane, consumed by hydroxide ions generated in the cathode reaction, Ag2O(s) + 2 H2O + 2e- → 2Ag(s) + 2 OH- . In the pump 1 μm monodisperse silica microspheres were used to make membrane, sandwiched between a pair of Ag/Ag2O plated carbon paper electrodes. We replaced the microspheres with cheap polydisperse (1~5μm, 80%) silica particles and tested the performances. The 13 ?L?min-1 flow rate was obtained at 1 V and the flow was stable for 3 hours at continuous operation, consuming 80% of its coulometric capacity. When the voltage increased, the current increased proportionally. The flow rate was proportional to the applied voltage in the range of 0 ~ 20 V. The flow rate decreased proportional to the opposing pressure and the flow rate dropped to nil at 11 kpa at 1 V and 24 kpa at 2 V.

1. Shin, W.; Lee, J. M.; Nagarale, R. K.; Shin, S. J.; Heller, A. J. Am. Chem. Soc., 2011, 133, 2374.
2. Shin, W.; Zhu, E.; Nagarale, R. K.; Kim, C. H.; Lee, J. M.; Shin, S. J.; Heller, A. Anal. Chem. 2011, 83(12), 5023
3. Shin, W.; Shin, S. J.; Lee, J. M.; Nagarale, R. K.; Heller, A. Drug Deliv. and Trans.l Res. 2011, 1, 342.