Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes
Boron-doped diamond (BDD) is of increasing interest for applications in electrochemical sensing. It is well known that the sp2 carbon content in BDD influences its electrochemical properties as electrode material. In this work, evidence is provided that the surface sp2 carbon content plays a crucial...
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doaj-904b96256c8049249a44136d73c070e52021-09-01T04:20:30ZengElsevierElectrochemistry Communications1388-24812021-09-01130107096Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodesZhichao Liu0André F. Sartori1Josephus G. Buijnsters2Department of Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsDepartment of Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsCorresponding author.; Department of Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsBoron-doped diamond (BDD) is of increasing interest for applications in electrochemical sensing. It is well known that the sp2 carbon content in BDD influences its electrochemical properties as electrode material. In this work, evidence is provided that the surface sp2 carbon content plays a crucial role in the electrochemical sensitivity of BDD towards glucose. Single-crystal BDD, freestanding polycrystalline BDD and glassy carbon (sp2 carbon reference material) were examined by voltammetry. Neither single-crystal BDD, which is free of sp2 carbon, nor pure sp2 glassy carbon could detect glucose in the range of 0.2–1.0 V. On the other hand, glucose oxidation was observed on polycrystalline BDD, and with increasing intensity with increase of sp2 carbon content. Thus, an optimum amount of (B-doped) sp2 carbon in the BDD electrode is needed for best sensing performance. Understanding this, and being able to control the composition of BDD, are not only important to glucose detection but to any electrochemical sensing application involving BDD.http://www.sciencedirect.com/science/article/pii/S1388248121001806Boron-doped diamond (BDD)Glucose detectionSp2 carbonNon-enzymaticSingle-crystal BDD |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhichao Liu André F. Sartori Josephus G. Buijnsters |
spellingShingle |
Zhichao Liu André F. Sartori Josephus G. Buijnsters Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes Electrochemistry Communications Boron-doped diamond (BDD) Glucose detection Sp2 carbon Non-enzymatic Single-crystal BDD |
author_facet |
Zhichao Liu André F. Sartori Josephus G. Buijnsters |
author_sort |
Zhichao Liu |
title |
Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
title_short |
Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
title_full |
Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
title_fullStr |
Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
title_full_unstemmed |
Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
title_sort |
role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes |
publisher |
Elsevier |
series |
Electrochemistry Communications |
issn |
1388-2481 |
publishDate |
2021-09-01 |
description |
Boron-doped diamond (BDD) is of increasing interest for applications in electrochemical sensing. It is well known that the sp2 carbon content in BDD influences its electrochemical properties as electrode material. In this work, evidence is provided that the surface sp2 carbon content plays a crucial role in the electrochemical sensitivity of BDD towards glucose. Single-crystal BDD, freestanding polycrystalline BDD and glassy carbon (sp2 carbon reference material) were examined by voltammetry. Neither single-crystal BDD, which is free of sp2 carbon, nor pure sp2 glassy carbon could detect glucose in the range of 0.2–1.0 V. On the other hand, glucose oxidation was observed on polycrystalline BDD, and with increasing intensity with increase of sp2 carbon content. Thus, an optimum amount of (B-doped) sp2 carbon in the BDD electrode is needed for best sensing performance. Understanding this, and being able to control the composition of BDD, are not only important to glucose detection but to any electrochemical sensing application involving BDD. |
topic |
Boron-doped diamond (BDD) Glucose detection Sp2 carbon Non-enzymatic Single-crystal BDD |
url |
http://www.sciencedirect.com/science/article/pii/S1388248121001806 |
work_keys_str_mv |
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