Hierarchical Gadolinium Oxide Microspheres for Enzymeless Electro-biosensors in Hydrogen Peroxide Dynamic Detection

Yibo Yan, Jun Zhao, Jianqiang Luo*, Jong Min Lee*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

6 Citations (Scopus)

Abstract

A porous gadolinium oxide spherically hierarchical structure (Gd2O3-ms) has been developed by using a hydrothermal method to perform enzymeless dynamic detection of hydrogen peroxide (H2O2), based on its high sensitivity in electrocatalytic reduction of H2O2. X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy have assisted in shedding light on the morphology, material formation process, structure, and properties of the porous gadolinium oxide microspheres. The linear range from 1 to 450 μM (linear correlation coefficient 0.991), sensitivity of 13.9 μA mM−1, and fine detection limit with a prompt current response attaining stable value were achieved by this enzymeless sensor, which was also employed to implement the dynamic tracing of H2O2-releasing processes.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalChemElectroChem
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 2017
Externally publishedYes

Scopus Subject Areas

  • Catalysis
  • Electrochemistry

User-Defined Keywords

  • enzymeless electro-biosensor
  • hydrogen peroxide dynamic tracing
  • porous gadolinium oxide microspheres

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