Role of sp2 carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-07-21 |
| Journal | Electrochemistry Communications |
| Authors | Zhichao Liu, AndrƩ F. Sartori, Josephus G. Buijnsters |
| Institutions | Delft University of Technology |
| Citations | 16 |
Abstract
Section titled āAbstractā<p>Boron-doped diamond (BDD) is of increasing interest for applications in electrochemical sensing. It is well known that the sp<sup>2</sup> carbon content in BDD influences its electrochemical properties as electrode material. In this work, evidence is provided that the surface sp<sup>2</sup> carbon content plays a crucial role in the electrochemical sensitivity of BDD towards glucose. Single-crystal BDD, freestanding polycrystalline BDD and glassy carbon (sp<sup>2</sup> carbon reference material) were examined by voltammetry. Neither single-crystal BDD, which is free of sp<sup>2</sup> carbon, nor pure sp<sup>2</sup> 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 sp<sup>2</sup> carbon content. Thus, an optimum amount of (B-doped) sp<sup>2</sup> 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.</p>
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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