Abstract
Mesoporous dysprosium oxide microspheres were prepared by using a hydrothermal process and applied as a dynamic sensor for the detection of hydrogen peroxide (H2O2), owing to its high sensitivity in H2O2 electroreduction. Infrared microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, and nitrogen adsorption–desorption isotherms were employed to study the porous structure and surface properties of the samples. The detection performance pertains to a broad linear range (1–400 μm, R=0.989), high sensitivity at 19.7 μA mm−1, measurement limit at 1 μm (signal-to-noise=3), along with the quick response to meet a 95 % plateau current within 3 s. The dynamic detection of H2O2 released from living breast cancer cells under pro-inflammatory stimulation was also recorded in real time.
| Original language | English |
|---|---|
| Pages (from-to) | 96-101 |
| Number of pages | 6 |
| Journal | ChemElectroChem |
| Volume | 4 |
| Issue number | 1 |
| Early online date | 30 Sept 2016 |
| DOIs | |
| Publication status | Published - Jan 2017 |
User-Defined Keywords
- dynamic measurements
- dysprosium oxide
- electrochemical biosensors
- hydrogen peroxide
- mesoporous materials
