https://scholars.lib.ntu.edu.tw/handle/123456789/445575
標題: | Amperometric detection of hydrogen peroxide at a Prussian Blue-modified FTO electrode | 作者: | Tseng, K.-S. LIN-CHI CHEN KUO-CHUAN HO |
關鍵字: | FTO; H2O 2 sensor; Hydrogen peroxide; Modified electrode; Prussian Blue | 公開日期: | 2005 | 卷: | 108 | 期: | 1-2 SPEC. ISS. | 起(迄)頁: | 738-745 | 來源出版物: | Sensors and Actuators, B: Chemical | 摘要: | This research focuses on the use of a Prussian Blue (PB)-modified optically transparent electrode for sensing hydrogen peroxide (H2O 2). The PB thin films were deposited galvanostatically onto F-doped tin oxide (FTO) glass substrates. Then a reliable and reproducible detection was achieved by exerting a constant bias of -0.2 V (versus Ag/AgCl/saturated KCl) at the PB-modified FTO electrode immersed in an H2O2 solution containing 0.1 M KCl, pH 2. The dynamic range of detection was found to lie between 50 μM and 50 mM, and the sensitivity was ca. 58.1 mA/cm 2 M. But it was also observed that the dissolved oxygen interfered the H2O2 sensing. Better sensing results could be obtained if the solution was pre-purged with N2. To sum up, this study possesses the potential to eliminate the use of costly platinum or glassy carbon in a PB-based H2O2 sensor and may provide the basis for optical sensing. ? 2004 Elsevier B.V. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/445575 | DOI: | 10.1016/j.snb.2004.12.031 | SDG/關鍵字: | Amperometric sensors; Carbon; Electrodes; Glass; Modification; Oxygen; Peroxides; Transparency; Amperometric detection; H2O2 sensors; Prussian Blue; Redox states; Hydrogen |
顯示於: | 化學工程學系 |
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