Abstract
Gold nanoparticles/carbon nanotubes (Au-NPs/CNTs) composites were rapidly synthesized by microwave radiation, and firstly applied for the determination of trace mercury(II) by anodic stripping voltammetry (ASV). The structure and composition of the synthesized Au-NPs/CNTs nanocomposites were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), UV-vis absorption spectroscopy and cyclic voltammetry. Au-NPs/CNTs nanocomposites modified glassy carbon electrode (Au-NPs/CNTs/GCE) exhibited excellent performance for Hg(II) analysis. A wide linear range (5 × 10-10-1.25 × 10-6 mol/L) and good repeatability (relative standard deviation of 1.84%) were obtained for Hg(II) detection. The limit of detection was found to be 3 × 10-10 mol/L (0.06 μg/L) at 2 min accumulation, while the World Health Organization's guideline value of mercury for drinking water is 1 μg/L, suggesting the proposed method may have practical utility.
| Original language | English |
|---|---|
| Pages (from-to) | 1839-1843 |
| Number of pages | 5 |
| Journal | Electrochemistry Communications |
| Volume | 10 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2008 |
Keywords
- Carbon nanotubes
- Gold nanoparticles
- Mercury
- Microwave-irradiated synthesis
- Voltammetry