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首页> 外文期刊>Physical chemistry chemical physics: PCCP >The fabrication, characterisation and electrochemical investigation of screen-printed graphene electrodes
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The fabrication, characterisation and electrochemical investigation of screen-printed graphene electrodes

机译：丝网印刷石墨烯电极的制备，表征和电化学研究

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摘要

We report the fabrication, characterisation (SEM, Raman spectroscopy, XPS and ATR) and electrochemical implementation of novel screen-printed graphene electrodes. Electrochemical characterisation of the fabricated graphene electrodes is undertaken using an array of electroactive redox probes and biologically relevant analytes, namely: potassium ferrocyanide(II), hexaammine-ruthenium(III) chloride, N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD), β-nicotinamide adenine dinucleotide (NADH), L-ascorbic acid (AA), uric acid (UA) and dopamine hydrochloride (DA). The electroanalytical capabilities of the fabricated electrodes are also considered towards the sensing of AA and DA. The electrochemical and (electro)analytical performances of the fabricated screen-printed graphene electrodes are considered with respect to the relative surface morphologies and material compositions (elucidated via SEM, Raman, XPS and ATR spectroscopy), the density of electronic states (% global coverage of edge-plane like sites/defects) and the specific fabrication conditions utilised. Comparisons are made between two screen-printed graphene electrodes and alternative graphite based screen-printed electrodes. The graphene electrodes are fabricated utilising two different commercially prepared 'graphene' inks, which have long screen ink lifetimes (>3 hours), thus this is the first report of a true mass-reproducible screen-printable graphene ink. Through employment of appropriate controls/comparisons we are able to report a critical assessment of these screen-printed graphene electrodes. This work is of high importance and demonstrates a proof-of-concept approach to screen-printed graphene electrodes that are highly reproducible, paving the way for mass-producible graphene sensing platforms in the future.
机译：我们报告了新型丝网印刷石墨烯电极的制造，表征（SEM，拉曼光谱，XPS和ATR）和电化学实现。使用一系列电活性氧化还原探针和生物学相关的分析物，即：亚铁氰化钾（II），六胺六氯化钌（III），N，N，N'，N'-四甲基-p -苯二胺（TMPD），β-烟酰胺腺嘌呤二核苷酸（NADH），L-抗坏血酸（AA），尿酸（UA）和多巴胺盐酸盐（DA）。所制造的电极的电分析能力也被考虑用于AA和DA的感测。相对于相对表面形态和材料组成（通过SEM，拉曼光谱，XPS和ATR光谱阐明），电子态密度（全球覆盖率％），考虑了制成的丝网印刷石墨烯电极的电化学和（电）分析性能。边缘平面之类的位置/缺陷）以及所使用的特定制造条件。在两个丝网印刷的石墨烯电极和石墨基丝网印刷电极之间进行了比较。石墨烯电极是使用两种不同的市售“石墨烯”油墨制造的，它们具有较长的丝网油墨寿命（> 3小时），因此这是首次出现可大规模复制的丝网印刷石墨烯油墨。通过采用适当的控制/比较，我们能够报告对这些丝网印刷的石墨烯电极的关键评估。这项工作非常重要，并演示了可高度复制的丝网印刷石墨烯电极的概念验证方法，为将来可大量生产的石墨烯传感平台铺平了道路。

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