Three-Dimensional Crumpled Graphene-Based Nanosheets with Ultrahigh NO2 Gas Sensibility

Zhuo Chen, Jinrong Wang, Ahmad Umar, Yao Wang*, Hao Li, Guofu Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

It is well-established that the structures dominate the properties. Inspired by the highly contorted and crumpled maxilloturbinate inside dog nose, herein an artificial nanostructure, i.e., 3D crumpled graphene-based nanosheets, is reported with the simple fabrication, detailed characterizations, and efficient gas-sensing applications. A facile supramolecular noncovalent assembly is introduced to modify graphene with functional molecules, followed with a lyophilization process to massively transform 2D plane graphene-based nanosheets to 3D crumpled structure. The detailed morphological characterizations reveal that the bioinspired nanosheets exhibit full consistency with maxilloturbinate. The fabricated 3D crumpled graphene-based sensors exhibit ultrahigh response (Ra/Rg = 3.8) toward 10 ppm of NO2, which is mainly attributed to the specific maxilloturbinate-mimic structure. The sensors also exhibit excellent selectivity and sensing linearity, reliable repeatability, and stability. Interestingly, it is observed that only 4 mg of graphene oxide (GO) raw materials can produce more than 1000 gas sensors, which provides a new insight for developing novel 3D biomimetic materials in large-scale gas sensor production.

Original languageEnglish (US)
Pages (from-to)11819-11827
Number of pages9
JournalACS Applied Materials and Interfaces
Volume9
Issue number13
DOIs
StatePublished - Apr 5 2017

Keywords

  • crumpled graphene nanosheets
  • dog noses
  • lyophilization
  • NO sensors
  • supramolecular modification

ASJC Scopus subject areas

  • Materials Science(all)

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