Fabrication and evaluation of some electrochemical properties of screen-printed electrodes for use in electrochemical analysis
Tập 133 Số 1B (2024), Nghiên cứu
Tập 133 Số 1B (2024)

Fabrication and evaluation of some electrochemical properties of screen-printed electrodes for use in electrochemical analysis

Nghiên cứu
https://doi.org/10.26459/hueunijns.v133i1B.7226
Đã xuất bản 2024-06-27
Thái Long Hoàng
Trường Đại học Khoa học
Trung Ngoc Phan
Center for Disease Control of Thua Thien Hue Province, 10-12 Nguyen Van Cu St., Hue, Vietnam
Xuan Anh Vu Ho
Department of Chemisstry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Dang Giang Chau Nguyen
Department of Chemisstry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Van Minh Hai HO
Department of Chemisstry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam

Tóm tắt

Three types of conductive inks, including Ceres, Acheson carbon inks, and Ag/AgCl ink, were utilized to fabricate screen-printed electrodes (SPEs) on a 0.4 mm thick polyethylene terephthalate substrate using a screen-printing technique. To enhance the electrical conductivity, the printed electrodes were cured at 80°C for 90 minutes. The basic electrochemical properties of the self-made SPEs using these conductive inks were determined, evaluated, and compared with commercial SPEs from Metrohm. Although the electroactive surface areas of the self-made SPEs were not significantly different from those of the commercial SPEs, the heterogeneous electron transfer rates on the surfaces of self-made SPEs using Ceres and Acheson inks were inferior to those of the commercial SPEs. However, after pre-condition by applying a potential of +1.2 V for 180 s in a 2 M Na2CO3 solution, the electrochemical properties of the self-made SPEs, including the active surface areas and heterogeneous electron transfer rates, were significantly improved and became better than those of the commercial SPEs.

https://doi.org/10.26459/hueunijns.v133i1B.7226

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