在这里,我们评估了纸巾的使用,蜡纸,和ParafilmM®(希思罗科学,VernonHills,IL,美国)作为丝网印刷传感器制造的替代基板。进行形态学研究以评估油墨在这些不常见基材上的附着力,以及工作电极的形态。以铁氰化物/亚铁氰化物为氧化还原对进行了电化学表征。为了提高所开发的传感器的电化学性能,纳米材料炭黑用作纳米改性剂。通过工作电极表面的滴铸改性,使用稳定的炭黑分散体,允许获得在峰-峰分离方面具有改善的电化学行为的传感器,电流强度,和电荷转移的电阻。所获得的结果证实了将电极印刷在几种具有成本效益的纸基材料上的可能性,以及通过使用炭黑作为可持续纳米材料来改善电化学行为的可能性。
Herein, we evaluated the use of paper towel, waxed paper, and Parafilm M® (Heathrow Scientific, Vernon Hills, IL, USA) as alternative substrates for screen-printed sensor manufacturing. Morphological study was performed to evaluate the adhesion of the ink on these uncommon substrates, as well as the morphology of the working electrode. The electrochemical characterization was carried out using ferricyanide/ferrocyanide as redox couple. To enhance the electrochemical properties of the developed sensors, the nanomaterial carbon black was used as nanomodifier. The modification by drop casting of the working electrode surface, using a stable dispersion of carbon black, allows to obtain a sensor with improved electrochemical behavior in terms of peak-to-peak separation, current intensity, and the resistance of charge transfer. The results achieved confirm the possibility of printing the electrode on several cost-effective paper-based materials and the improvement of the electrochemical behavior by using carbon black as sustainable nanomaterial.