3D printing for electroanalysis: From multiuse electrochemical cells to sensors
3D printing for electroanalysis: From multiuse electrochemical cells to sensors
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DOI：
10.1016/j.aca.2018.06.021
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发表时间：
2018-11-29
影响因子：
6.2
通讯作者：
Munoz, Rodrigo A. A.
中科院分区：
文献类型：
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作者：
Cardoso, Rafael M.;Mendonca, Dianderson M. H.;Munoz, Rodrigo A. A.
这项工作提出了低成本熔融沉积建模3D打印机的潜在应用，以制造用于流量或批量测量的多用途3D打印电化学电池，以及电化学传感平台的3D打印。分别用丙烯腈丁二烯苯乙烯（ABS）和导电石墨烯掺杂的聚乳酸（G-PLA）长丝印刷电化学电池和传感器。总印刷操作时间和每个电池的估计成本分别为6小时和6.00美元，而传感器在几分钟内印刷（10分钟内印刷16个1 × 2cm的传感器条，每个传感器的成本为1.00美元）。通过流动注射分析（FIA）和分批注射分析（BIA），使用不同的工作电极，包括所提出的3D打印传感器，其表现出与其他碳基电极相当的电分析性能（多巴胺的LOD为0.1 μ mol L-1），证明了电流检测叔丁基对苯二酚，安乃近，多巴胺和双氯芬酸的电池性能。3D打印传感器的拉曼光谱和扫描电子显微镜表明聚合物基质内存在石墨烯纳米带。氧化还原探针Ru（NH3）（6）（+3）的电化学阻抗谱和非均相电子转移常数（k（0））表明，玻璃碳电极的电子转移速率比3D打印传感器快;然而，后者对多巴胺和儿茶酚的LOD值较低，可能是由于G-PLA表面的含氧官能团。(C)2018 Elsevier B. V.版权所有。
This work presents potential applications of low-cost fused deposition modeling 3D-printers to fabricate multiuse 3D-printed electrochemical cells for flow or batch measurements as well as the 3D-printing of electrochemical sensing platforms. Electrochemical cells and sensors were printed with acrylonitrile butadiene styrene (ABS) and conductive graphene-doped polylactic acid (G-PLA) filaments, respectively. The overall printing operation time and estimated cost per cell were 6 h and $ 6.00, respectively, while the sensors were printed within minutes (16 sensor strips of 1 x 2 cm in 10 min at a cost of $ 1.00 each sensor). The cell performance is demonstrated for the amperometric detection of tert-butylhydroquinone, dipyrone, dopamine and diclofenac by flow-injection analysis (FIA) and batch-injection analysis (BIA) using different working electrodes, including the proposed 3D-printed sensor, which presented comparable electroanalytical performance with other carbon-based electrodes (LOD of 0.1 mu mol L-1 for dopamine). Raman spectroscopy and scanning electron microscopy of the 3D-printed sensor indicated the presence of graphene nanoribbons within the polymeric matrix. Electrochemical impedance spectroscopy and heterogeneous electron transfer constants (k(0)) for the redox probe Ru(NH3)(6)(+3) revealed that a glassy-carbon electrode presented faster electron transfer rates than the 3D-printed sensor; however, the latter presented lower LOD values for dopamine and catechol probably due to oxygenated functional groups at the G-PLA surface. (C) 2018 Elsevier B.V. All rights reserved.