A facile method to prepare reduced graphene oxide with a large pore volume

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

9 Scopus Citations
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Author(s)

  • Bihe Yuan
  • Yongqian Shi
  • Xiaowei Mu
  • Junling Wang
  • Weiyi Xing
  • Yuan Hu

Detail(s)

Original languageEnglish
Pages (from-to)154-156
Journal / PublicationMaterials Letters
Volume162
Publication statusPublished - 1 Jan 2016

Abstract

Large size reduced graphene oxide (RGO) tends to restack or form irreversible agglomerates during the conventional drying. In this work, a facile and efficient drying method, involving freezing-thawing-drying approach, is developed to prepare porous RGO. The RGO exhibits a large pore volume (0.414 cm3/g) and specific surface area (294.9 m2/g). The RGO can be easily ground using mortar and pestle and be dispersed in solvent by ultrasonication. The RGO shows porous nanostructure and poorly-stacked layered structure. Compared with the RGO dried by conventional method, the RGO dried by this modified process possesses similar structural defect density. The ice crystal formed by liquid nitrogen is expected to prevent the restacking of graphene nanosheets and be beneficial to obtain porous structure.

Research Area(s)

  • Freezing-thawing-drying, Pore volume, Reduced graphene oxide

Citation Format(s)

A facile method to prepare reduced graphene oxide with a large pore volume. / Yuan, Bihe; Shi, Yongqian; Mu, Xiaowei; Wang, Junling; Xing, Weiyi; Liew, Kim Meow; Hu, Yuan.

In: Materials Letters, Vol. 162, 01.01.2016, p. 154-156.

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