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

Enhanced selectivity of boron doped diamond electrodes for the detection of dopamine and ascorbic acid by increasing the film thickness
Enhanced selectivity of boron doped diamond electrodes for the detection of dopamine and ascorbic acid by increasing the film thickness
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.
Boron doped diamond, Dopamine, Ascorbic acid, Electroanalysis, Differential pulse voltammetry
0169-4332
882-889
Qi, Yao
28b3ccea-83f6-49d3-a27b-7999169620be
Long, Hangyu
03c97efe-1c4a-4719-a343-c8bc9cbd705c
Ma, Li
1ba2adc7-e4d8-4a7b-8cfd-10d9ff41564b
Wei, Quiping
277760c5-9fc2-4471-a44b-e1fda1bedb7e
Li, Site
81773513-d003-4ff3-ad50-8cb3333b58de
Yu, Zhiming
62dbd3d6-e3ed-4f90-be95-c5851620d625
Hu, Jingyuan
6861a1d6-145f-41a3-80a4-9d362f869eae
Liu, Peizhi
9868b400-d040-4b0b-abad-cab49630b0db
Wang, Yijia
3ad14997-9698-4064-8115-65830516ae7d
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56
Qi, Yao
28b3ccea-83f6-49d3-a27b-7999169620be
Long, Hangyu
03c97efe-1c4a-4719-a343-c8bc9cbd705c
Ma, Li
1ba2adc7-e4d8-4a7b-8cfd-10d9ff41564b
Wei, Quiping
277760c5-9fc2-4471-a44b-e1fda1bedb7e
Li, Site
81773513-d003-4ff3-ad50-8cb3333b58de
Yu, Zhiming
62dbd3d6-e3ed-4f90-be95-c5851620d625
Hu, Jingyuan
6861a1d6-145f-41a3-80a4-9d362f869eae
Liu, Peizhi
9868b400-d040-4b0b-abad-cab49630b0db
Wang, Yijia
3ad14997-9698-4064-8115-65830516ae7d
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56

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, 882-889. (doi:10.1016/j.apsusc.2016.08.158).

Record type: Article

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.

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More information

Accepted/In Press date: 29 August 2016
e-pub ahead of print date: 31 August 2016
Published date: 30 December 2016
Keywords: Boron doped diamond, Dopamine, Ascorbic acid, Electroanalysis, Differential pulse voltammetry
Organisations: Electrochemistry

Identifiers

Local EPrints ID: 407528
URI: http://eprints.soton.ac.uk/id/eprint/407528
ISSN: 0169-4332
PURE UUID: b61ce5f3-cd56-47ee-a2ea-0ebf72a9040a
ORCID for Lingcong Meng: ORCID iD orcid.org/0000-0002-3995-3584

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Date deposited: 13 Apr 2017 01:05
Last modified: 15 Mar 2024 13:13

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Contributors

Author: Yao Qi
Author: Hangyu Long
Author: Li Ma
Author: Quiping Wei
Author: Site Li
Author: Zhiming Yu
Author: Jingyuan Hu
Author: Peizhi Liu
Author: Yijia Wang
Author: Lingcong Meng ORCID iD

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