A glassy carbon electrode modified with FeS nanosheets as a highly sensitive amperometric sensor for hydrogen peroxide
Iron sulfides with different atomic ratios were synthesized by a hydrothermal method and used to modify a glassy carbon electrode. The various sulfides were compared to each other for their amperometric response to H2O2. It is found that FeS is the most adequate material. Operated in 0.1 M NaOH solution at 0.4 V (vs. Ag/AgCl), the sensor based on FeS displays a linear response that extends from 0.50 μM to 20.5 mM of H2O2, with a sensitivity of 36.4 μA mM−1 cm−2 and a detection limit of 0.15 μM (at an S/N ratio of 3). The sensor is selective, stable and reproducible.
KeywordsNanomaterial Electrochemical impedance spectroscopy X-ray diffraction Scanning electron microscopy Cyclic voltammetry Linear sweep voltammetry Chronoamperometry
We acknowledge financial support from the National Natural Science Foundation of China through a project entitled “The synthesis of Pt-M/C nanoparticles and construction of non-enzymatic electrochemical biosensor” (Grant No. 21205030), and by the National Nature Science Foundation of China (51402096), and by State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology, 2015-KF-13), and by Hubei Key Laboratory of Pollutant Analysis & Reuse Technology (PA160104), and from the Natural Science Fund for Creative Research Groups of Hubei Province of China through a project entitled “Controllable Synthesis and Application of Nano-/microsized Functional Materials” (2014CFA015).
Compliance with ethical standards
The author(s) declare that they have no competing interests.
- 9.Karuppiah C, Palanisamy S, Chen SM, Veeramani V, Periakaruppan P (2014) A novel enzymatic glucose biosensor and sensitive non-enzymatic hydrogen peroxide sensor based on graphene and cobalt oxide nanoparticles composite modified glassy carbon electrode. Sens. Actuators B 196:450–456CrossRefGoogle Scholar
- 22.Dutta AK, Maji SK, Srivastava DN, Mondal A, Biswas P, Paul P, Adhikary B (2012) Synthesis of FeS and FeSe nanoparticles from a single source precursor: a study of their photocatalytic activity, peroxidase-like behavior, and electrochemical sensing of H2O2. ACS Appl Mater Interfaces 4:1919–1927CrossRefGoogle Scholar
- 23.Maji SK, Dutta AK, Biswas P, Srivastava DN, Paul P, Mondal A, Adhikary B (2012) Synthesis and characterization of FeS nanoparticles obtained from a dithiocarboxylate precursor complex and their photocatalytic, electrocatalytic and biomimic peroxidase behavior. Appl Catal A Gen 419-420:170–177CrossRefGoogle Scholar
- 24.Yu P, Qu SC, Jia CH, Liu K, Tan (2015) F electrochemical synthesis of FeS2 thin film: an effective material for peroxide sensing and terephthalic acid degradation. Mater Lett 157: 235–238.Google Scholar
- 25.Jeong MS, Jang SB (2006) Electron transfer and nano-scale motions in nitrogenase Fe-protein. Curr Nanosci 2:35–41Google Scholar
- 27.Kobayashi H, Takeshita N, Mori N, Takahashi H, Kamimura T (2001) Pressure-induced semiconductor-metal-semiconductor transitions in FeS. Phys Rev B 63:1–6Google Scholar
- 28.Wold A, Dwight K (1993) Solid state chemistry: synthesis, structure, and properties of selected oxides and sulfides. Chapman & Hall Incorporation, New York doi: 10.1007/978-94-011-1476-9
- 29.Yao ZF, Yang X, Wu F, Wu WL, Wu FP (2016) Synthesis of differently sized silver nanoparticles on a screen-printed electrode sensitized with a nanocomposites consisting of reduced graphene oxide and cerium(IV) oxide for nonenzymatic sensing of hydrogen peroxide. Microchim Acta 183:2799–2806CrossRefGoogle Scholar
- 32.Yang Z, Qi C, Zheng X, Zheng J (2016) Sensing hydrogen peroxide with a glassy carbon electrode modified with silver nanoparticles, AlOOH and reduced graphene oxide. Microchim Acta 183:131–1136Google Scholar