Sensitive Electrochemical Determination of Hyperin Based on Electrochemically Activated ZrO2 Nanoparticles-Modified Carbon Paste Electrode

Na Wang; Jianyao Kou; Lijie Wang; Fei Wang; Kui Lu

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자료유형: 학술저널

저자정보: Na Wang (Henan University of Engineering) Jianyao Kou (Henan University of Engineering) Lijie Wang (Henan University of Engineering) Fei Wang (Henan University of Engineering) Kui Lu (Zhengzhou Institute of Technology)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.14 No.5

발행연도: 2019.1

수록면: 1 - 11 (11page)

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A novel electrochemically activated ZrO2 nanoparticles modified carbon paste electrode (CPE) (ZrO2-CPE(ox)) was prepared and applied for selective and sensitive determination of hyperin. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra and electrochemical experiment were used to characterize the ZrO2 nanoparticles and investigate the electrochemical performance of the ZrO2-CPE(ox). Compared with bare CPE and electrochemically activated CPE (CPE(ox)), the ZrO2-CPE(ox) got more reactive sites by electrochemical treatment and exhibited larger effective surface area and more excellent electrochemical catalytic activity toward the redox of hyperin. Under the optimum conditions, the oxidation peak currents showed a linear relationship with the concentrations of hyperin in the range of 5.0 x 10 -9 – 2.0 x 10 -6 mol L -1 and 2.0 x 10 -6 – 1.2 x 10 -5 mol L -1, and a low detection limit of 1.0 x 10 -9 mol L -1 was achieved for hyperin. Moreover, the proposed method exhibited an excellent selectivity, stability, reproducibility and repeatability, which make it very suitable for a potential choice for determining the concentrations of hyperin in drug matrices.

#Carbon paste electrode #ZrO2 nanoparticles #electrochemically activated #hyperin

참고문헌 (42)

참고문헌 신청

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