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

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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