期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 4, 期 34, 页码 5737-5746出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tb01774f
关键词
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资金
- Royal Society Newton Fund [NI140181]
- Institute of Advanced Studies of the University of Bristol
- UK Catalysis Hub Consortium (EPSRC grants) [EP/K014706/1, EP/K014668/1, EP/K014854/1, EP/K014714/1, EP/M013219/1]
- EPSRC BristolBridge award: Bridging the Gaps between the Engineering and Physical Sciences and Antimicrobial Resistance [EP/M027546/1]
- Engineering and Physical Sciences Research Council [EP/G049076/1, EP/M027546/1, EP/K014854/1, EP/K014668/1, EP/K014706/1, EP/K035142/1, EP/K014714/1, EP/M013219/1, EP/L022532/1] Funding Source: researchfish
- Medical Research Council [MR/N010345/1] Funding Source: researchfish
- EPSRC [EP/L022532/1, EP/K014854/1, EP/M013219/1, EP/K014714/1, EP/K014668/1, EP/G049076/1, EP/K014706/1, EP/K035142/1, EP/M027546/1] Funding Source: UKRI
- MRC [MR/N010345/1] Funding Source: UKRI
This report describes a method to fabricate high-surface-area boron-doped diamond (BDD) electrodes using so-called 'black silicon' (bSi) as a substrate. This is a synthetic nanostructured material that contains high-aspect-ratio nano-protrusions, such as spikes or needles, on the Si surface produced via plasma etching. We now show that coating a bSi surface composed of 15 mm-high needles conformably with BDD produces a robust electrochemical electrode with high sensitivity and high electroactive area. A clinically relevant demonstration of the efficacy of these electrodes is shown by measuring their sensitivity for detection of dopamine (DA) in the presence of an excess of uric acid (UA). Finally, the nanostructured surface of bSi has recently been found to generate a mechanical bactericidal effect, killing both Gram-negative and Gram-positive bacteria at high rates. We will show that BDD-coated bSi also acts as an effective antibacterial surface, with the added advantage that being diamond-coated it is far more robust and less likely to become damaged than Si.
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