Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater
AbstractIn this paper, we successfully fabricated a novel bromide ion selective electrode (Br-ISE), which was coated by bromine ion doped polyaniline as sensitive film. Using Ag wire as the substrate, a uniform and dense nano-silver layer was electroplated to enhance the specific surface area of the electrode. Subsequently, a polyaniline (PANI) film was coated onto the electrode by cyclic voltammetry in a 0.3 M aniline and 1 M HCl solution and was in-situ doped by 0.1 M KBr solution. The morphology and performance of the electrode were characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and other electrochemical analysis methods, respectively. The prepared Br-ISE exhibited a wide linear dynamic range between 1.0 × 10−1 and 1.0 × 10−7 M with a near-Nernst slope of 57.33 mV/decade. In addition, the electrode possessed extremely fast response time (<1 s) and low impedance (300 Ω), high sensitivity, and good selectivity. The electrode potential drifted within 2 mV in 8 h. The lifespan was larger than three months. View Full-Text
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Wang, Q.; Zhou, Y.; Zhou, J.; Wu, R.; Wu, J.; Zheng, H.; Ye, Y.; Huang, Y. Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater. Coatings 2019, 9, 325.
Wang Q, Zhou Y, Zhou J, Wu R, Wu J, Zheng H, Ye Y, Huang Y. Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater. Coatings. 2019; 9(5):325.Chicago/Turabian Style
Wang, Qiujin; Zhou, Yifan; Zhou, Jixue; Wu, Rongrong; Wu, Jianbo; Zheng, Hao; Ye, Ying; Huang, Yuanfeng. 2019. "Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater." Coatings 9, no. 5: 325.
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