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Title: Additive manufacturing of electrochemical interfaces : simultaneous detection of biomarkers
Authors: Ho, Eugene Hong Zhuang
Ambrosi, Adriano
Pumera, Martin
Keywords: 3D-printing
Issue Date: 2018
Source: Ho, E. H. Z., Ambrosi, A., & Pumera, M. (2018). Additive manufacturing of electrochemical interfaces: Simultaneous detection of biomarkers. Applied Materials Today, 12, 43-50. doi:10.1016/j.apmt.2018.03.008
Series/Report no.: Applied Materials Today
Abstract: 3D-printed stainless steel helical shaped electrodes with or without surface modification with a gold (Au) film are tested as novel electrode materials for the electrochemical detection of ascorbic acid and uric acid in aqueous solutions. Their performance in terms of sensitivity, selectivity and reproducibility is evaluated and compared to conventional glassy carbon electrode (GCE). Owing to the excellent electrocatalytic properties of the 3D-printed gold (Au) electrode, a clear separation between the anodic oxidation signal of ascorbic acid and uric acid in differential pulse voltammogram (DPV) could be obtained, allowing simultaneous quantification of these biomarkers. The oxidation current obtained using the 3D-printed Au electrode increased linearly with its respective biomarkers concentration in the range of 0.1–1 mM. Furthermore, the 3D-printed Au electrode generally performed better in terms of sensitivity and detection limits as compared to GCE. A real sample analysis of Vitamin C tablet (500 mg), Vitacimin was conducted using the 3D-printed Au electrode obtaining a variation from claimed concentration of ascorbic acid of only about 0.5%. Therefore, electrodes fabricated by 3D printing would certainly represent a viable alternative to conventional electrodes for efficient electrochemical analysis in the future.
DOI: 10.1016/j.apmt.2018.03.008
Schools: School of Physical and Mathematical Sciences 
Rights: © 2018 Elsevier Ltd. All rights reserved. This paper was published in Applied Materials Today and is made available with permission of Elsevier Ltd.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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