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2 results on '"Ku, Bonkyung '

1. Ionic strength-controlled virtual area of mesoporous platinum electrode

Author

Boo, Hankil ; Park, Sejin, Ku, Bonkyung ; Park, Jin Hyung, Kim, Hee Chan, Kim, Yunmee, and Chung, Taek Dong

Subjects
Electrodes -- Research, Platinum compounds -- Research, Ions -- Research, Chemistry
Abstract

Mesoporous platinum (Pt) has received much attention with regard to its potential applications. By an electrochemical method, a hexagonal liquid crystalline phase can be used as a template to fabricate mesoporous platinum.

Published
2004

2. Ionic strength-controlled virtual area of mesoporous platinum electrode

Author

Hankil Boo, Yunmee Kim, Se Jin Park, Jinhyoung Park, Taek Dong Chung, Hee Chan Kim, and Bonkyung Ku

Subjects
Colloid and Surface Chemistry, Chemical engineering, Chemistry, Ionic strength, Electrode, Analytical chemistry, chemistry.chemical_element, General Chemistry, Mesoporous material, Platinum, Biochemistry, Catalysis, Electrochemical potential
Abstract

Mesoporous electrodes provide an unusual opportunity to observe the dramatic transition of the electrochemical potential distribution in vicinity to mesoporous surfaces as the ionic strength varies. The experimental results were in accordance with what the classical Gouy-Chapman theory predicts on the basis of the correlation between Debye length (kappa-1) and the diameter of mesopores. Using the phenomenon that the electrochemically effective area of mesoporous electrode depends on the ionic strength, the faradaic current density of dioxygen reduction could be controlled by the electrolyte concentration.

Published
2004

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