Enhanced selectivity of boron doped diamond electrodes for the detection of dopamine and ascorbic acid by increasing the film thickness

Qi, Yao, Long, Hangyu, Ma, Li , Wei, Quiping, Li, Site, Yu, Zhiming, Hu, Jingyuan, Liu, Peizhi, Wang, Yijia and Meng, Lingcong (2016) Enhanced selectivity of boron doped diamond electrodes for the detection of dopamine and ascorbic acid by increasing the film thickness. Applied Surface Science, 390 . pp. 882-889. ISSN 0169-4332

Full content URL: https://doi.org/10.1016/j.apsusc.2016.08.158

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Item Type:Article
Item Status:Live Archive

Abstract

In this paper, boron doped diamond (BDD) with different thickness were prepared by hot filament chemical vapor deposition. The performance of BDD electrodes for detecting dopamine (DA) and ascorbic acid (AA) were investigated. Scanning electron microscopy and Raman spectra reveal the grain size increases and the film quality improves with the increase of film thickness. Electrochemical test show that the transfer coefficient in [Fe3 (CN) 6]3−/4− redox system increases with the increase of the film thickness. The results of selectivity and sensitivity for DA mixed with AA detection show that 8h-BDD and 12h-BDD electrodes possess well selective separated oxidation peaks of DA and AA, and the 12h-BDD electrode exhibits optimal sensitivity until the DA concentration drops to 1 μ M.

Keywords:Boron doped diamond, Dopamine, Ascorbic acid, Electroanalysis, Differential pulse, Voltammetry
Divisions:College of Science > School of Chemistry
ID Code:47288
Deposited On:12 Nov 2021 16:52

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