Crumpled Nanopaper from Graphene Oxide

被引：165

作者：

Ma, Xiaofei ^{[1
,2
,3
]}

Zachariah, Michael R. ^{[1
,2
,3
]}

Zangmeister, Christopher D. ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Mat Measurement Lab, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA

[3] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 01期

关键词：

Graphene; graphene oxide; crumpling; fractal dimension; aerosol; ion mobility; CONFORMATIONS; ANISOTROPY;

D O I：

10.1021/nl203964z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Graphene oxide (GO) in aqueous solution was aerosolized and rapidly dried to produce crumpled nanopaper-like sheets. Online size selection and aerosol mass analysis was used to determine the fractal dimension (D) of crumpled GO nanosheets as 2.54 +/- 0.04. That is identical to macroscale materials, such as crumpled balls of paper and foil. Thermal reduction of crumpled GO nanosheets did not change D, even after loss of nearly 25% of the nanosheets mass. We demonstrate that D is able to be tuned by altering solvent conditions. A 10% acetone mixture increased D to 2.68 +/- 0.02. Calculations of the confinement force show that crumpling of GO nanosheets is driven by the capillary force associated with rapid solvent loss.

引用

页码：486 / 489

页数：4

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