4.7 Article

Utilization of AuNPs dotted S-doped carbon nanoflakes as electrochemical sensing platform for simultaneous determination of Cu (II) and Hg (II)

期刊

JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 794, 期 -, 页码 71-77

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2017.04.002

关键词

S-doped carbon; Gold nanoparticles; Poly(3,4-ethylenedioxythiophene); Differential pulse anodic stripping voltammetry; Heavy metals

资金

  1. National Natural Science Foundation of China [21665010, 51302117, 51272096]
  2. Natural Science Foundation of Jiangxi Province [20162BCB23027]
  3. Science and Technology Landing Plan of Universities in Jiangxi province [KJLD14069]
  4. Jiangxi Science & Technology Normal University Program for Scientific Research Innovation Team [2015CXTD001]
  5. State Key Laboratory of Chemical Biosensing Chemometrics [2015010]
  6. Outstanding Youth Fund of Jiangxi Province
  7. One Hundred Person Yuan Hang Project
  8. Provincial Projects for Postgraduate Innovation in Jiangxi [YC2016-S416]

向作者/读者索取更多资源

Gold nanoparticles (AuNPs) dotted S-doped carbon (AuNPs/S-C) nanoflakes were synthesized via a facial and simple approach. Typical synthesis route involves the formation of gold nanoparticles/poly(3,4-ethylenedioxythiophene) (AuNPs/PEDOT) and a subsequent calcination process. Many techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) were used to characterize their morphology, structures and compositions. Results indicated that AuNPs with an average size of 5 nm were uniformly dotted on/into the S-C nanoflakes. The AuNPs/S-C/naflon was utilized as a new electrode material for simultaneously electrochemical determination of Cu (II) and Hg (II) using differential pulse anodic stripping voltammetry (DPASV) technique. Benefiting from the efficient metal-complexing ability and electrocatalytic activity of S-C and the good conductivity of AuNPs, the modified electrode exhibited enhanced electrochemical performance compared with bare glassy carbon electrode. Under optimal conditions, the peak currents displayed linear response to the concentrations of Cu (II) and Hg (II) ranges from 0.64 to 63.55 mu g/L and 4.01 to 300.89 mu g/L, with detection limits of 0.19 mu g/L and 1.40 mu g/L (S/N = 3), respectively. The modified electrode was also applied for the determination of Cu (II) and Hg (II) in lake water samples with good results.

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