Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34832
標題: Improved voltammetric peak separation and sensitivity of uric acid and ascorbic acid at nanoplatelets of graphitic oxide
作者: Chang, J.L.
曾志明
Chang, K.H.
Hu, C.C.
Cheng, W.L.
Zen, J.M.
關鍵字: Nanoplatelets of graphitic oxide
Edge plane
Uric acid
Ascorbic acid
Screen-printed electrode
multiwalled carbon nanotubes
edge plane sites
electrochemical sensor
hydrothermal dehydration
electron-transfer
graphene oxide
platform
blood
期刊/報告no:: Electrochemistry Communications, Volume 12, Issue 4, Page(s) 596-599.
摘要: In this study, much improved voltammetric peak separation and sensitivity of uric acid and ascorbic acid was observed at a screen-printed carbon electrode modified with nanoplatelets of graphitic oxide (GO). Electrochemical sensing of uric acid and ascorbic acid was further used to explore the role of oxygen functionalities and edge plane sites on electrocatalysis at GO. We successfully apply a microwave-assisted hydrothermal elimination method to remove the oxygen-containing functional groups from the GO surface. The edge plane on GO can be retained and the density of oxygen-containing functional groups can be easily controlled by varying the microwave treatment temperature. Using this platform, such discrimination to peak separation is attributed to the very distinct behavior of uric acid and ascorbic acid to form hydrogen bonds with oxo-surface groups (especially COOH group) at GO. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/34832
ISSN: 1388-2481
文章連結: http://dx.doi.org/10.1016/j.elecom.2010.02.008
Appears in Collections:化學系所

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.