Enhancement in the fluorescence of graphene quantum dots by hydrazine hydrate reduction

被引：121

作者：

Feng, Yaqiang ^{[1
,3
]}

Zhao, Jinping ^{[1
]}

Yan, Xingbin ^{[1
,2
]}

Tang, Fuling ^{[3
]}

Xue, Qunji ^{[2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Dept Mat Sci & Engn, Lanzhou 730050, Peoples R China

来源：

CARBON | 2014年 / 66卷

关键词：

CARBON DOTS; FABRICATION; AVENUE;

D O I：

10.1016/j.carbon.2013.09.008

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 simple and effective chemical method was reported to enhance the fluorescence of graphene quantum dots (GQDs). Specifically, water-soluble GQDs, prepared by solvothermal synthesis from graphene oxide, are chemically reduced by hydrazine hydrate to produce reduced GQDs (rGQDs). The results show that the hydrazine hydrate reduction not only decreases the O/C atomic ratio of GQDs, also changes the bonding type of N atoms. Such surface/edge chemical bond change of GQDs results in that as-made rGQDs exhibit more than two times fluorescence intensity as strong as that of the pristine GQDs. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：334 / 339

页数：6

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