Nitrogen-rich core-shell structured particles consisting of carbonized zeolitic imidazolate frameworks and reduced graphene oxide for amperometric determination of hydrogen peroxide

Zehui Li, Yuheng Jiang, Zhuoya Wang, Wenbo Wang, Yi Yuan, Xiaoxue Wu, Xingchen Liu, Mingjie Li, Sobia Dilpazir, Guangjin Zhang, Dongbin Wang, Chenming Liu, Jingkun Jiang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Core-shell structured particles were prepared from carbonized zeolitic imidazolate frameworks (ZIFs) and reduced graphene oxide (rGO). The particles possess a nitrogen content of up to 10.6%. The loss of nitrogen from the ZIF is avoided by utilizing the reduction and agglomeration of graphene oxide with suitable size (>2 μm) during pyrolysis. The resulting carbonized ZIF@rGO particles were deposited on a glassy carbon electrode to give an amperometric sensor for H2O2, typically operated at a voltage of −0.4 V (vs. Ag/AgCl). The sensor has a wide detection range (from 5 × 10−6 to 2 × 10−2 M), a 3.3 μM (S/N = 3) detection limit and a 0.272 μA·μM−1·cm−2 sensitivity, much higher than that of directly carbonized ZIFs. The sensor material was also deposited on a screen-printed electrode to explore the possibility of application. [Figure not available: see fulltext.].

Original languageEnglish
Article number501
JournalMicrochimica Acta
Volume185
Issue number11
DOIs
StatePublished - 1 Nov 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018, Springer-Verlag GmbH Austria, part of Springer Nature.

Keywords

  • Electrocatalyst
  • Electrochemical sensor
  • HO
  • Nitrogen doped carbon
  • Screen-printed electrode

ASJC Scopus subject areas

  • Analytical Chemistry

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