Please use this identifier to cite or link to this item: https://doi.org/10.1039/b719914g
Title: Direct amperometric detection of glucose on a multiple-branching carbon nanotube forest
Authors: Tan, C.K. 
Loh, K.P. 
John, T.T.L. 
Issue Date: 2008
Citation: Tan, C.K., Loh, K.P., John, T.T.L. (2008). Direct amperometric detection of glucose on a multiple-branching carbon nanotube forest. Analyst 133 (4) : 448-451. ScholarBank@NUS Repository. https://doi.org/10.1039/b719914g
Abstract: We show here that a re-structured carbon nanotube (CNT) forest can be used 'as-received' for high selectivity, non-enzymatic glucose detection without the need to incorporate catalytic metal nanoparticles or an exclusion polymeric membrane. Direct amperometric sensing of glucose has been achieved by using multiply-branched CNTs prepared by growing secondary or tertiary 'offshoot' CNTs on top of the existing CNT layer. The increased roughness factor on these re-structured CNTs enhances the amperometric detection sensitivity for glucose by a factor of 20× over that of interfering species like ascorbic acid or uric acid. A sensitivity of 60 μA mM-1 cm-2 and a detection limit of 1 μM, with a linear detection range of 1-11 mM (R 2 = 0.999), could be attained on the re-grown CNTs. When the re-grown CNTs were subjected to further anodization in acid to introduce a highly-charged interface, the sensitivity to glucose was enhanced to 157 μA mM-1 cm-2. © The Royal Society of Chemistry.
Source Title: Analyst
URI: http://scholarbank.nus.edu.sg/handle/10635/82157
ISSN: 00032654
DOI: 10.1039/b719914g
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

25
checked on Jul 17, 2018

WEB OF SCIENCETM
Citations

26
checked on Jul 17, 2018

Page view(s)

25
checked on Jun 8, 2018

Google ScholarTM

Check

Altmetric


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