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$\beta$-Cyclodextrin Functionalization of Activated Carbon-Carbon Nanotube Composites and Supramolecular Recognition of Ascorbic Acid
New Phys.: Sae Mulli 2019; 69: 290~294
Published online March 29, 2019;
© 2019 New Physics: Sae Mulli.

Aryal Krishna PRASAD, Hae Kyung JEONG*

Department of Physics, Institute of Basic Science, Daegu University, Gyeongsan 38453, Korea
Correspondence to:
Received November 14, 2018; Revised November 16, 2018; Accepted December 21, 2018.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Activated carbon–carbon nanotube (AC-CNT) and $\beta$-cyclodextrin–activated carbon–carbon nanotube ($\beta$CD-AC-CNT) composites were synthesized successfully by using a simple chemical method and were characterized by using scanning electron microscopy, energy dispersive X-ray spectroscopy and thermogravimetric analyses. The electrochemical supramolecular recognition capability of the two composites was studied by using cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy for ascorbic acid as the biomolecule. More significantly, differential pulse voltammetry showed that the $\beta$CD-AC-CNT composite exhibited a high supramolecular recognition and enrichment capability for ascorbic acid and, consequently, displayed an excellent electrochemical response to the probe molecule.
PACS numbers:, 81.05.uj, 88.30.rh
Keywords: Biosensor, Carbon composites, Carbon nanotube

March 2019, 69 (3)
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