Preparation of Mesoporous Dysprosium Oxide for Dynamic Hydrogen Peroxide Detection without Enzymes

Yibo Yan, Jun Zhao, Jong Min Lee*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

7 Citations (Scopus)


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 languageEnglish
Pages (from-to)96-101
Number of pages6
Issue number1
Early online date30 Sept 2016
Publication statusPublished - Jan 2017
Externally publishedYes

Scopus Subject Areas

  • Catalysis
  • Electrochemistry

User-Defined Keywords

  • dynamic measurements
  • dysprosium oxide
  • electrochemical biosensors
  • hydrogen peroxide
  • mesoporous materials


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