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Nien YH, Kang ZX, Su TY, Ho CS, Chou JC, Lai CH, Kuo PY, Lai TY, Dong ZX, Chen YY, Huang YH. Investigation of Flexible Arrayed Lactate Biosensor Based on Copper Doped Zinc Oxide Films Modified by Iron-Platinum Nanoparticles. Polymers (Basel) 2021; 13:polym13132062. [PMID: 34201835 PMCID: PMC8272072 DOI: 10.3390/polym13132062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/22/2021] [Accepted: 06/22/2021] [Indexed: 11/16/2022] Open
Abstract
Potentiometric biosensors based on flexible arrayed silver paste electrode and copper-doped zinc oxide sensing film modified by iron-platinum nanoparticles (FePt NPs) are designed and manufactured to detect lactate in human. The sensing film is made of copper-doped zinc oxide (CZO) by a radio frequency (RF) sputtering system, and then modified by iron-platinum nanoparticles (FePt NPs). The surface morphology of copper-doped zinc oxide (CZO) is analyzed by scanning electron microscope (SEM). FePt NPs are analyzed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The average sensitivity, response time, and interference effect of the lactate biosensors are analyzed by voltage-time (V-T) measurement system. The electrochemical impedance is analyzed by electrochemical impedance spectroscopy (EIS). The average sensitivity and linearity over the concentration range 0.2-5 mM are 25.32 mV/mM and 0.977 mV/mM, respectively. The response time of the lactate biosensor is 16 s, with excellent selectivity.
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Affiliation(s)
- Yu-Hsun Nien
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Zhi-Xuan Kang
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Tzu-Yu Su
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Chih-Sung Ho
- Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan
| | - Jung-Chuan Chou
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Chih-Hsien Lai
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Po-Yu Kuo
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Tsu-Yang Lai
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Zhe-Xin Dong
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Yung-Yu Chen
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
| | - Yu-Hao Huang
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
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