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Single-step fabrication of electrochemical flow cells utilizing multi-material 3D printing
Electrochemistry Communications ( IF 5.4 ) Pub Date : 2018-12-13 , DOI: 10.1016/j.elecom.2018.12.006
Glen D. O'Neil , Shakir Ahmed , Kevin Halloran , Jordyn N. Janusz , Alexandra Rodríguez , Irina M. Terrero Rodríguez

Here we present methodology for fabricating electrochemical flow cells with embedded carbon-composite electrodes in a single step using simultaneous 3D printing of insulating poly(lactic acid) (PLA) and a commercially available graphene–PLA composite. This work is significant because it is the first demonstration that devices capable of fluid handling and electrochemical sensing can be produced in a single fabrication step using inexpensive equipment. We demonstrate the broad utility of this approach using a channel-flow configuration as an exemplary system for hydrodynamic electrochemistry. Unmodified devices were characterized using hydrodynamic electrochemistry, and behave according to the well-established Levich equation. We also characterized the fabrication reproducibility and found that the devices were within 3% RSD. The 3D-printed sensors we employed were subsequently modified by electroplating Au and used under flowing conditions to detect catechol, whose oxidation requires two electrons and two protons and is thus more challenging to analyze than the outer-sphere FcCH2OH. We envision these results will pave the way for the development of highly customized micro-total analysis systems that include embedded electrochemical sensors for a variety of redox-active analytes.



中文翻译:

使用多材料3D打印的电化学流通池的单步制造

在这里,我们介绍了使用绝缘聚乳酸(PLA)和市售石墨烯-PLA复合材料的同时3D打印在单个步骤中制造带有嵌入式碳复合电极的电化学流通池的方法。这项工作意义重大,因为这是第一个证明,可以使用廉价的设备在单个制造步骤中生产出能够进行流体处理和电化学感应的设备。我们展示了使用通道流配置作为流体动力学电化学的一个示例性系统的这种方法的广泛实用性。未修饰的器件使用流体动力学电化学进行表征,并根据公认的Levich方程运行。我们还对制造的可重复性进行了表征,发现该器件的RSD在3%以内。2 OH。我们认为,这些结果将为高度定制的微量总分析系统的开发铺平道路,该系统包括适用于各种氧化还原活性分析物的嵌入式电化学传感器。

更新日期:2018-12-13
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