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

Bihe Yuan; Yongqian Shi; Xiaowei Mu; Junling Wang; Weiyi Xing; Kim Meow Liew; Yuan Hu

doi:10.1016/j.matlet.2015.10.011

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

Bihe Yuan, Yongqian Shi, Xiaowei Mu, Junling Wang, Weiyi Xing, Kim Meow Liew, Yuan Hu

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

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.

Original language	English
Pages (from-to)	154-156
Number of pages	3
Journal	Materials Letters
Volume	162
DOIs	https://doi.org/10.1016/j.matlet.2015.10.011
State	Published - 1 Jan 2016
Externally published	Yes

Keywords

Freezing-thawing-drying
Pore volume
Reduced graphene oxide

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10.1016/j.matlet.2015.10.011

Cite this

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title = "A facile method to prepare reduced graphene oxide with a large pore volume",

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.",

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author = "Bihe Yuan and Yongqian Shi and Xiaowei Mu and Junling Wang and Weiyi Xing and Liew, {Kim Meow} and Yuan Hu",

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doi = "10.1016/j.matlet.2015.10.011",

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T1 - A facile method to prepare reduced graphene oxide with a large pore volume

AU - Yuan, Bihe

AU - Shi, Yongqian

AU - Mu, Xiaowei

AU - Wang, Junling

AU - Xing, Weiyi

AU - Liew, Kim Meow

AU - Hu, Yuan

PY - 2016/1/1

Y1 - 2016/1/1

N2 - 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.

AB - 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.

KW - Freezing-thawing-drying

KW - Pore volume

KW - Reduced graphene oxide

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U2 - 10.1016/j.matlet.2015.10.011

DO - 10.1016/j.matlet.2015.10.011

M3 - 文章

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SN - 0167-577X

VL - 162

SP - 154

EP - 156

JO - Materials Letters

JF - Materials Letters

ER -

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

Abstract

Keywords

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