“…The electrode shows a good cycling behavior which would benefit for repeated qualitative detection of chloride ions. The current response of platinum electrode modified with Ag nanowires in aqueous solutions containing 5 mM KCl is 0.15 mA in the literature [6]. Under the same experimental conditions, the maximum and minimum current responses of oxidation peaks in this work are 5.3 and 3.1 times of the value reported in the literature [6], respectively.…”
Section: Resultssupporting
confidence: 74%
“…As shown, one pair of redox peaks appear resulted from the formation and the reduction of AgCl [6]. The electrochemical reaction is described by the equation: AgCl + e Ð Ag + Cl À [6,28]. When chloride ions react with the Ag atoms in composites, silver chloride precipitate is formed on the electrode surface and consequently produces an oxidation wave on the cyclic voltammetry curves, while reduction of the silver chloride precipitate leads to generation of a reduction current and correspondingly a reduction wave is produced.…”
Section: Resultsmentioning
confidence: 89%
“…5. As shown, one pair of redox peaks appear resulted from the formation and the reduction of AgCl [6]. The electrochemical reaction is described by the equation: AgCl + e Ð Ag + Cl À [6,28].…”
Section: Resultsmentioning
confidence: 95%
“…Many researches have been focused on the fabrication of Ag films for electrochemical detection of halide [3][4][5][6]. Chiu et al [5] made a disposable screen printed silver strip sensor and detection limits for iodide, bromide, and chloride were 3.05 mM, 2.95 mM, and 18.83 mM, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…Chiu et al [5] made a disposable screen printed silver strip sensor and detection limits for iodide, bromide, and chloride were 3.05 mM, 2.95 mM, and 18.83 mM, respectively. Qin et al [6] developed a silver nanowires modified platinum (Ag NWs/ Pt) electrode for simultaneous and selective determination of chloride, bromide, and iodide ions by cyclic voltammetry in aqueous solutions, and it showed that the Ag NWs/Pt electrode offered a useful platform for the development of a highly sensitive halide sensor.…”
“…The electrode shows a good cycling behavior which would benefit for repeated qualitative detection of chloride ions. The current response of platinum electrode modified with Ag nanowires in aqueous solutions containing 5 mM KCl is 0.15 mA in the literature [6]. Under the same experimental conditions, the maximum and minimum current responses of oxidation peaks in this work are 5.3 and 3.1 times of the value reported in the literature [6], respectively.…”
Section: Resultssupporting
confidence: 74%
“…As shown, one pair of redox peaks appear resulted from the formation and the reduction of AgCl [6]. The electrochemical reaction is described by the equation: AgCl + e Ð Ag + Cl À [6,28]. When chloride ions react with the Ag atoms in composites, silver chloride precipitate is formed on the electrode surface and consequently produces an oxidation wave on the cyclic voltammetry curves, while reduction of the silver chloride precipitate leads to generation of a reduction current and correspondingly a reduction wave is produced.…”
Section: Resultsmentioning
confidence: 89%
“…5. As shown, one pair of redox peaks appear resulted from the formation and the reduction of AgCl [6]. The electrochemical reaction is described by the equation: AgCl + e Ð Ag + Cl À [6,28].…”
Section: Resultsmentioning
confidence: 95%
“…Many researches have been focused on the fabrication of Ag films for electrochemical detection of halide [3][4][5][6]. Chiu et al [5] made a disposable screen printed silver strip sensor and detection limits for iodide, bromide, and chloride were 3.05 mM, 2.95 mM, and 18.83 mM, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…Chiu et al [5] made a disposable screen printed silver strip sensor and detection limits for iodide, bromide, and chloride were 3.05 mM, 2.95 mM, and 18.83 mM, respectively. Qin et al [6] developed a silver nanowires modified platinum (Ag NWs/ Pt) electrode for simultaneous and selective determination of chloride, bromide, and iodide ions by cyclic voltammetry in aqueous solutions, and it showed that the Ag NWs/Pt electrode offered a useful platform for the development of a highly sensitive halide sensor.…”
A nonenzymatic amperometric electrochemical sensor for the detection of hydrogen peroxide (H2O2) was fabricated based on highly dense silver nanowires (Ag NWs) and chitosan (CS) film. Ag NWs were synthesized by a poly(vinyl pyrrolidone) (PVP)‐mediated polyol process in the presence of manganese chloride (MnCl2), and were characterized by scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), and X‐ray diffraction (XRD). Under the optimal conditions, the proposed nonenzymatic sensor exhibited good electrocatalytic activity towards the reduction of H2O2, and could detect H2O2 in the linear range of 0.008–1.35 mM, with a detection limit of 2 µM (S/N=3).
Cyclic voltammetric (CV) and differential pulse voltammetric (DPV) measurements were carried out to assess the changes in electrode reactivity in halide determination with a silver nanowire‐modified platinum electrode. With DPV, successive voltammograms of the halide solution revealed progressive deterioration of the oxidation currents corresponding to Br− and Cl−, while those of I− increased largely. Comparatively, CV is stable and effective to remove precipitates due to the reduction process, in which, the concentrated effect alleviated and the amount of AgI decreased. CV was consequently suggested to be favorable for halide determination, while playing a role in electrocatalytic activation of the electrode.
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