Microwave-hydrothermal synthesis of fluorescent carbon dots from graphite oxide

被引：314

作者：

Wang, Qinlong ^{[1
]}

Zheng, Huzhi ^{[1
]}

Long, Yijuan ^{[1
]}

Zhang, Lingyan ^{[1
]}

Gao, Mei ^{[1
]}

Bai, Wenjun ^{[1
]}

机构：

[1] Southwest Univ, Coll Chem & Chem Engn, Minist Educ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Chongqing 400715, Peoples R China

来源：

CARBON | 2011年 / 49卷 / 09期

关键词：

ASSISTED SYNTHESIS; NANOPARTICLES; WATER; NANODIAMONDS; NANOCRYSTALS; NANOTUBES; BRIGHT; PHASE;

D O I：

10.1016/j.carbon.2011.03.041

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：

Graphite oxide (GO), candle soot, conductive carbon black and lampblack were used to prepare fluorescent carbon dots (CDots) by heating under reflux in nitric acid. The CDots prepared from GO exhibited the highest quantum yield and narrowest emission of those produced. Microwave-assisted techniques were also used to synthesize CDots. Compared with conventional heating under reflux, microwave-assisted heating under reflux and a microwave-hydrothermal method both shortened the reaction time. CDots prepared using microwave-assisted techniques exhibited increased absorption, higher quantum yield and longer fluorescence lifetime than those prepared by conventional heating under reflux. (C) 2011 Elsevier Ltd. All rights reserved.

引用

收藏

页码：3134 / 3140

页数：7

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