Electrochemical sensing of 4-nitrochlorobenzene based on carbon nanohorns/graphene oxide nanohybrids

Gangbing Zhu, Heng Sun, Bin Zou, Zhenjiang Liu, Ning Sun, Yinhui Yi, Kwok Yin Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

50 Citations (Scopus)


Owing to the harmful nature of 4-nitrochlorobenzene (4-NCB, one toxic organic pollutant) and the low cost, high sensitivity and ease of operation of electrochemical method, it is highly desirable to develop effect electrochemical sensor for the detection of 4-NCB. Herein, by partially unzipping carbon nanohorns (CNHs) via a simple wet-chemistry method, CNHs and graphene oxide (GO) (CNHs/GO) nanohybrids were produced for sensing 4-NCB with synergistic properties. While the retained CNHs offer a path for rapid electron transport, the GO sheets formed by partially unzipping CNHs provide abundant active sites, further increase in surface area as well as improved dispersibility of the CNHs/GO. Our results show that the CNHs/GO modified electrode has excellent sensitivity to 4-NCB with a wide linear response range and a detection limit as low as 10 nM.
Original languageEnglish
Pages (from-to)136-141
Number of pages6
JournalBiosensors and Bioelectronics
Publication statusPublished - 30 May 2018


  • 4-nitrochlorobenzene
  • Carbon nanohorns
  • Electrochemical sensor
  • Graphene
  • Modified electrode
  • Nanomaterial

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry


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