Iron oxyhydroxide nanorods with high electrochemical reactivity as a sensitive and rapid determination platform for 4-chlorophenol

Journal of Hazardous Materials
Yuanyuan ZhangKangbing Wu

Abstract

Iron oxyhydroxide (FeOOH) nanorods were prepared through solvothermal reaction, and characterized using Raman spectroscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, transmission electron microscopy and scanning electron microscopy. Thereafter, the prepared FeOOH nanorods were used as sensing material to construct a novel detection platform for 4-chlorophenol (4-CP). The electrochemical behaviors of 4-CP were studied, and the oxidation peak currents increased greatly on the surface of FeOOH nanorods. The signal enhancement mechanism was studied for 4-CP, and it was found that the prepared FeOOH nanorods remarkably improved the electron transfer ability and surface adsorption efficiency of 4-CP. The influences of pH value, amount of FeOOH nanorods and accumulation time were examined. As a result, a highly-sensitive electrochemical method was developed for the rapid determination of 4-CP. The linear range was from 10 to 500nM, and the detection limit was 3.2nM. It was used in different water samples, and the results consisted with the values that obtained by high-performance liquid chromatography.

References

Jul 1, 1980·Critical Reviews in Toxicology·U G Ahlborg, T M Thunberg
Aug 1, 2012·Materials Science & Engineering. C, Materials for Biological Applications·Chengzhen WeiZhaodong Nan

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