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Boron-doped multi-walled carbon nanotubes as sensing material for analysis of dopamine and epinephrine in presence of uric acid

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Tsierkezos, Nikos G., Ritter, Uwe, Thaha, Yudi Nugraha, Knauer, Andrea, Fernandes, Diogo Andre jardoso, Kelarakis, Antonios orcid iconORCID: 0000-0002-8112-5176 and McCarthy, Eoin K. (2018) Boron-doped multi-walled carbon nanotubes as sensing material for analysis of dopamine and epinephrine in presence of uric acid. Chemical Physics Letters, 710 . pp. 157-167. ISSN 0009-2614

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Official URL: https://doi.org/10.1016/j.cplett.2018.09.007

Abstract

Boron-doped multi-walled carbon nanotubes (B-MWCNTs) were synthesized, treated with hydrochloric acid, “piranha” solution, and decorated with gold nanoparticles (AuNPs). B-MWCNTs were characterized using Raman spectroscopy, scanning electron- and transmission electron microscopy, and electrochemical techniques. The results exhibit enhanced response and sensitivity of B-MWCNTs upon modification with AuNPs. Analysis of dopamine (DA) and epinephrine (EP) in presence of uric acid (UA) was investigated on B-MWCNTs/AuNPs in pig blood serum. Limits of detection of 0.20 and 0.30 μM were estimated for DA and EP, respectively. The findings demonstrate that B-MWCNTs/AuNPs is proper for analysis of DA and EP under coexistence of UA.


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