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

Hue University Journal of Science: Natural Science - Tập 133 Số 1B - Trang 99-108 - 2024
Thai Long Hoang1, Trung Ngoc Phan2, Xuan Anh Vu Ho1, Dang Giang Chau Nguyen1, Van Minh Hai HO1
1Department of Chemisstry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
2Center for Disease Control of Thua Thien Hue Province, 10-12 Nguyen Van Cu 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.

Từ khóa

#screen-printed electrode #SPE #cyclic voltammetry #electroactive surface area #electron transfer rate

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Thông tin
Thông tin xuất bản

Hue University Journal of Science: Natural Science

Tập 133 Số 1B

99-108

Thông tin tác giả