Self-Assembly of 2D Nanosheets into 1D Nanostructures for Sensing NO2

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Zhen Yuan
  • Zhan Zhou
  • Yang Li
  • Jiangqi Zhao
  • Liang Zhen
  • Huiling Tai

Detail(s)

Original languageEnglish
Article number2100067
Journal / PublicationSmall Structures
Volume2
Issue number9
Online published14 Jul 2021
Publication statusPublished - Sep 2021

Abstract

Ultrathin 2D nanosheets are one of the appealing building blocks for constructing self-assembled nanostructures. Herein, a facile, fast, and general solvent-mediated route for the high-yield and large-scale self-assembly of ultrathin 2D nanosheets into 1D nanofibers and nanorings is reported. Solution-dispersed graphene oxide (GO), MoS2, TiS2, and TaS2 nanofibers with lengths of several tens of micrometers and diameters of 20-50 nm are formed via the self-assembly of their corresponding single-layer nanosheets by simply vibrating their tetra-hydrofuran suspensions under vortex for 1 min at room temperature. Interestingly, by simply changing the solvent from tetrahydrofuran to acetone, nanorings with diameters of 200-500 nm can be obtained via a similar process. As a proof-of-concept application, the reduced GO (rGO) nanofibers obtained by thermal reduction of the GO nanofibers are used as the channel material to fabricate electronic gas sensor, showing good sensitivity (with a detection limit of ≈75 ppb) and selectivity toward NO2. The simple assembly strategy can be used to assemble other ultrathin 2D nanomaterials into 1D nanostructures for various promising applications.

Research Area(s)

  • gas sensing, nanofibers, nanorings, self-assembly, 2D nanosheets, GRAPHENE OXIDE, HIGHLY EFFICIENT, SCROLLS, NANOSCROLLS, NITROGEN

Citation Format(s)

Self-Assembly of 2D Nanosheets into 1D Nanostructures for Sensing NO2. / Zha, Jiajia; Yuan, Zhen; Zhou, Zhan; Li, Yang; Zhao, Jiangqi; Zeng, Zhiyuan; Zhen, Liang; Tai, Huiling; Tan, Chaoliang; Zhang, Hua.

In: Small Structures, Vol. 2, No. 9, 2100067, 09.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review