A paper-based inkjet-printed PEDOT:PSS/ ZnO sol-gel hydrazine sensor
Surya, Sandeep Goud
Robles, Aminta Naidili Castillo
Salama, Khaled N.
KAUST DepartmentMaterials Science and Engineering Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
Biological and Environmental Sciences and Engineering (BESE) Division
Electrical Engineering Program
Online Publication Date2019-12-06
Print Publication Date2020-03
Embargo End Date2021-12-06
Permanent link to this recordhttp://hdl.handle.net/10754/660528
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AbstractHydrazine is widely used in industries as a precursor for blowing agents, pharmaceuticals, and pesticides. It is a highly toxic compound; therefore, it is of paramount interest to develop new analytical methods for the detection and control of hydrazine exposure. In this work, we describe the fabrication of an all inkjet-printed paper sensor composed of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) electrode functionalized with zinc oxide (ZnO) and encapsulated in a Nafion matrix for the amperometric determination of low concentrations of hydrazine. The electrochemical properties of the fully inkjet-printed PEDOT:PSS/Nafion and PEDOT:PSS/ZnO/Nafion sensors are compared in the presence and absence of different concentrations of hydrazine. The stability and sensitivity of these electrodes are significantly enhanced after modification with ZnO particles. The layer-by-layer deposition of the materials on the electrode surface is characterized by SEM, XRD, and AFM. The printed sensor exhibits a linear response in the 10 to 500 μM hydrazine concentration range and a ∼5 μM detection limit (at S/N = 3). The electrochemical sensitivity is 0.14 µA·µM-1 cm-2, and the best working voltage is 0.5 V. The developed sensor was applied successfully for the determination of hydrazine content in tap, sea, and mineral water samples validating the accuracy of this sensor.
CitationBedük, T., Bihar, E., Surya, S. G., Robles, A. N. C., Inal, S., & Salama, K. N. (2019). A paper-based inkjet-printed PEDOT:PSS/ ZnO sol-gel hydrazine sensor. Sensors and Actuators B: Chemical, 127539. doi:10.1016/j.snb.2019.127539
SponsorsThe authors would like to acknowledge the financial support of funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia.