The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

An Electrochemical Detector Using Prussian Blue Electrodeposited Indium Tin Oxide Electrode

Prussian blue가 전착된 indium tin oxide 전극을 이용한 전기화학적 검출기

  • Published : 2005.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

We fabricated an electrochemical detector (ECD) to catalyze redox reaction efficiently by electrodepositing Prussian blue (PB) on the indium tin oxide (ITO) electrode. Capillary electrophoresis (CE) and amperometric method were used. We investigated the PB surface properties by topography from atomic force microscopy (AFM). Also PB film thickness calibration with respect to deposition time and voltage was used to get better PB surFace. The PB thin film of dense and smooth surface could catalyze redox reaction efficiently. Comparing with CE-ECD microchip using bare-lTO electrode, proposed CE-ECD microchip using PB deposited electrode has shown better sensitivity by determining the detected peak current from the electropherograms while the concentration of tested analyzes was maintained the same. It is verified that detection limit can be lowered for 0.01 mM of dopamine and catechol respectively.

Keywords

References

  1. Manz, A, Graber, N., Widmer, H. M., 'Miniaturized total chemical analysis systems: A novel concept for chemical sensing,' Sens. & Act. B, vol. 1, pp. 244-248, 1990 https://doi.org/10.1016/0925-4005(90)80209-I
  2. Stephen C. Jacobson, Roland Hergenroder, Lance B. Koutny, J. Michael Ramsey, 'High-Speed Separations on a Microchip,' Anal. Chem., vol. 66, pp, 1114-1118, 1994 https://doi.org/10.1021/ac00079a029
  3. Ju-Ho Kim, C. J. Kang, and Yong-Sang Kim, 'A Development of a Microfabricated Disposable microchip with a Capillary Electrophoresis and Integrated Three-Electrode Electrochemical Detection,' Biosensors & Bioelectronics, vol. 20, no. 11, pp. 2314-2317, 2005 https://doi.org/10.1016/j.bios.2005.01.015
  4. Martin, R. S., Ratzlaff, K. L., Huynh, B. H., Lunte, S.M., 'In-Channel Electrochemical Detection for Microchip Capillary Electrophoresis Using an Electrically Isolated Potentiostat,' Anal. Chem. vol, 74, pp. 1136-1143, 2002 https://doi.org/10.1021/ac011087p
  5. Jin-Ho Kim, Kwang-Ho Na, C. J. Kang, D. Jeon, and Yong-Sang Kim, 'A disposable hermopneumatic-actuated microvalve stacked with PDMS layers and ITO-coated glass,' Microelectronic Engineering, vol. 73-74, pp, 864-869, 2004 https://doi.org/10.1016/S0167-9317(04)00235-7
  6. Jin-Ho Kim, C. J. Kang, and Yong-Sang Kim, 'A disposable hermopneumatic-actuated microvalve stacked with PDMS layers and ITO-coated glass,' Microelectronic Engineering, vol. 73-74, pp, 864-869, 2004 https://doi.org/10.1016/j.mee.2003.10.005