Hierarchically Self-Assembled Star-Shaped ZnO Microparticles for Electrochemical Sensing of Amines

Jianping Du, Xiaoxi Huang, Ruihua Zhao, Jinping Li, Teddy Asefa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Novel, hierarchically nanostructured, star-shaped ZnO (SSZ) microparticles are synthesized by a hydrothermal synthetic route. The SSZ microparticles serve as effective platforms for electrochemical detection of amines in solution. The morphology and structure of the materials are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and UV/Vis spectroscopy. The as-synthesized SSZ microparticles comprise self-assembled hexagonal prisms that possess nanometer and micrometer pores in their structure and on their surfaces - structural features that are conducive to sensing applications. An electrode fabricated by using the hierarchically nanostructured SSZ materials serve as a sensitive electrochemical sensor for detection of low concentrations of ethylenediamine, with a sensitivity of 2.98×10-2mA cm-2mm-1, a detection limit of 2.36×10-2mm, and a short response time of 8 s. Stellar detection: Hierarchically nanostructured star-shaped ZnO (SSZ) microparticles that can serve as efficient electrochemical sensors for ethylenediamine (EDA) are synthesized by a simple hydrothermal synthetic route. The SSZ microparticles show a high sensitivity for detection of EDA with a value of 2.98×10-2mA cm-2mm-1and with a short response time of 8 s.

Original languageEnglish
Pages (from-to)8068-8073
Number of pages6
JournalChemistry - A European Journal
Volume22
Issue number24
DOIs
Publication statusPublished - 2016

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Keywords

  • amines
  • self-assembly
  • semiconductors
  • sensors
  • zinc oxide

ASJC Scopus subject areas

  • Chemistry(all)

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