期刊
ANALYST
卷 138, 期 2, 页码 576-582出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2an36263e
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资金
- National Science Council of the Republic of China (Taiwan) [NSC 100-2628-E-008-008-MY3]
The electrochemical sensing properties of graphene-based and carbon nanotube (CNT)-based electrodes towards ascorbic acid, dopamine, uric acid, and glucose are systematically compared. Nano-sized Pd catalyst particles are uniformly dispersed on both carbon supports using a supercritical fluid deposition technique to increase the sensing performance. The CNT/Pd electrode shows higher detection current than that of the graphene/Pd electrode, which is attributed to the three-dimensional architecture interwoven by the CNTs that creates a larger number of reaction sites. With the incorporation of ionic liquid (IL), the detection sensitivity of the IL/graphene/Pd electrode significantly increases, becoming noticeably higher than that of the IL/CNT/Pd counterpart. The synergistic interactions between graphene and IL that lead to the superior sensing performance are demonstrated and discussed.
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