Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/137235
Title: Fabrication of poly (diallyldimethylammonium chloride) (PDDA) functionalized multi-walled carbon nanotubes paper electrode for simultaneous detection of dopamine and ascorbic acid
Authors: Pui, Tze-Sian
Aung, Than
Loo, Song Wei
Hoe, Yuan-Li
Keywords: Engineering::Chemical engineering
Issue Date: 2019
Source: Pui, T.-S., Aung, T., Loo, S. W., & Hoe, Y.-L. (2019). Fabrication of poly (diallyldimethylammonium chloride) (PDDA) functionalized multi-walled carbon nanotubes paper electrode for simultaneous detection of dopamine and ascorbic acid. Nanomedicine & Nanotechnology, 4(3): 000169-179. doi:10.23880/nnoa-16000169
Journal: Nanomedicine & Nanotechnology
Abstract: A paper-based electrode based on nanocomposite, comprising of carboxylated multi-walled carbon nanotubes (MWNTs) and poly (diallyldimethylammonium chloride) (PDDA), has been successfully developed for simultaneous detection of dopamine (DA) and ascorbic acid (AA) in 0.1 M phosphate buffer solution (PBS). The fabrication of PDDA/MWNTs electrodes involves two steps: PDDA absorbed onto the surface of carboxylated MWNTs and drop-casting the aqueous mixture of PDDA/MWNTs onto the paper. The electrode size was defined by a window cut into a laminating film. Differential pulse voltammetry was performed with DA concentration ranging from 2 μM to 500 μM in the presence of 1mM AA. On the surface of PDDA/MWNTs electrode, DA and AA were oxidized respectively at distinguishable potential of 0.156 and -0.068 V (vs. Ag/AgCl). The detection limit of DA was estimated to be 0.8 μM. This nanocomposite electrode has potential application in bioanalysis and biomedicine.
URI: https://hdl.handle.net/10356/137235
ISSN: 2574-187X
DOI: 10.23880/nnoa-16000169
Rights: © 2019 Tze-Sian Pui, et al. This work is distributed under the Creative Commons Attribution 4.0 License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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