Ultrasonication-assisted ultrafast reduction of graphene oxide by zinc powder at room temperature

被引：330

作者：

Mei, Xiaoguang ^{[1
]}

Ouyang, Jianyong ^{[1
]}

机构：

[1] Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117574, Singapore

来源：

CARBON | 2011年 / 49卷 / 15期

关键词：

EXFOLIATED GRAPHITE OXIDE; LARGE-AREA; AQUEOUS DISPERSIONS; FILMS; RAMAN; PHASE;

D O I：

10.1016/j.carbon.2011.08.019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A green method is reported to effectively and rapidly reduce graphene oxide to graphene with zinc powder at room temperature. The reduction is carried out by mixing graphene oxide and zinc powder in solution under ultrasonication. The reduction is complete within 1 min. The weight of the Zn powder should be at least as twice as that of graphene oxide to complete the reduction. The reduction of graphene oxide is confirmed by FTIR, UV-Vis absorption spectroscopy and Raman spectroscopy. The carbon/oxygen atomic ratio has increased from 2.58 to 33.5 after the reduction as determined by X-ray photoelectron spectroscopy. The reduced graphene oxide can have a conductivity of 15,000 S/m. It also has good thermal stability with the weight loss at 590 degrees C in air. The reduced graphene oxide can be readily re-dispersed into solutions of various surfactants. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5389 / 5397

页数：9

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