Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO₂/GO at Different Temperatures

Shi-Chang Tseng; Tong-Yu Wu; Jung-Chuan Chou; Yi-Hung Liao; Chih-Hsien Lai; Siao-Jie Yan; Ting-Wei Tseng

doi:10.3390/s18020632

Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO₂/GO at Different Temperatures

Sensors (Basel). 2018 Feb 20;18(2):632. doi: 10.3390/s18020632.

Authors

Shi-Chang Tseng¹, Tong-Yu Wu², Jung-Chuan Chou^{3

4}, Yi-Hung Liao⁵, Chih-Hsien Lai^{6

7}, Siao-Jie Yan⁸, Ting-Wei Tseng⁹

Affiliations

¹ Graduate School of Mechanical Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. tsengsc@yuntech.edu.tw.
² Graduate School of Mechanical Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. d10011005@yuntech.edu.tw.
³ Department of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. choujc@yuntech.edu.tw.
⁴ Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. choujc@yuntech.edu.tw.
⁵ Department of Information and Electronic Commerce Management, TransWorld University, Douliu 64002, Taiwan. liaoih@mail.twu.edu.tw.
⁶ Department of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. chlai@yuntech.edu.tw.
⁷ Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. chlai@yuntech.edu.tw.
⁸ Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. m10313322@yuntech.edu.tw.
⁹ Department of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan. wolf84411@gmail.com.

Abstract

We investigate the temperature effect on sensing characteristics and drift effect of an arrayed flexible ruthenium dioxide (RuO₂)/graphene oxide (GO) chloride sensor at different solution temperatures between 10 °C and 50 °C. The average sensor sensitivities according to our experimental results were 28.2 ± 1.4 mV/pCl (10 °C), 42.5 ± 2.0 mV/pCl (20 °C), 47.1 ± 1.8 mV/pCl (30 °C), 54.1 ± 2.01 mV/pCl (40 °C) and 46.6 ± 2.1 mV/pCl (50 °C). We found the drift effects of an arrayed flexible RuO₂/GO chloride sensor in a 1 M NaCl solution to be between 8.2 mV/h and 2.5 mV/h with solution temperatures from 10 °C to 50 °C.

Keywords: chloride ion sensor; drift effect; graphene oxide; ruthenium dioxide; temperature effect.