Microwave-Assisted Synthesis of a Core–Shell MWCNT/GONR Heterostructure for the Electrochemical Detection of Ascorbic Acid, Dopamine, and Uric Acid
學年 100
學期 1
出版（發表）日期 2011-10-01
作品名稱 Microwave-Assisted Synthesis of a Core–Shell MWCNT/GONR Heterostructure for the Electrochemical Detection of Ascorbic Acid, Dopamine, and Uric Acid
作品名稱（其他語言）
著者 Sun, Chia-Liang; Chang, Ching-Tang; Lee, Hsin-Hsien; Zhou, Jigang; Wang, Jian; Sham, Tsun-Kong; Pong, Way-Faung
單位 淡江大學物理學系
出版者 Washington, DC: American Chemical Society
著錄名稱、卷期、頁數 ACS Nano 5(10), pp.7788–7795
摘要 In this study, graphene oxide nanoribbons (GONRs) were synthesized from the facile unzipping of multiwalled carbon nanotubes (MWCNTs) with the help of microwave energy. A core–shell MWCNT/GONR-modified glassy carbon (MWCNT/GONR/GC) electrode was used to electrochemically detect ascorbic acid (AA), dopamine (DA), and uric acid (UA). In cyclic voltammograms, the MWCNT/GONR/GC electrode was found to outperform the MWCNT- and graphene-modified GC electrodes in terms of peak current. For the simultaneous sensing of three analytes, well-separated voltammetric peaks were obtained using a MWCNT/GONR/GC electrode in differential pulse voltammetry measurements. The corresponding peak separations were 229.9 mV (AA to DA), 126.7 mV (DA to UA), and 356.6 mV (AA to UA). This excellent electrochemical performance can be attributed to the unique electronic structure of MWCNTs/GONRs: a high density of unoccupied electronic states above the Fermi level and enriched oxygen-based functionality at the edge of the graphene-like structures, as revealed by X-ray absorption near-edge structure spectroscopy, obtained using scanning transmission X-ray microscopy.
關鍵字 graphene oxide nanoribbon; multiwalled carbon nanotube; microwave; electrochemical biosensor; ascorbic acid; dopamine; uric acid
語言 en
ISSN 1936-0851; 1936-086X
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Sun, Chia-Liang
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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