文献类型：期刊文献

英文题名：Economical, green route to highly fluorescence intensity carbon materials based on ligninsulfonate/graphene quantum dots composites: Application as excellent fluorescent sensing platform for detection of Fe3+ ions

作者：Xu, Lina[1] Mao, Wei[1] Huang, Jinrui[1] Li, Shouhai[1] Huang, Kun[1] Li, Mei[1] Xia, Jianling[1] Chen, Qiang[2]

第一作者：许利娜

通信作者：Xia, Jianling

机构：[1] Key Laboratory of Biomass Energy and Material, Jiangsu Province, Key and Open Laboratory on Forest Chemical Engineering, State Forestry Administration, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042, China; [2] School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China

年份：2016

卷号：230

起止页码：54-60

外文期刊名：Sensors and Actuators, B: Chemical

收录：EI(收录号：20161002065435);Scopus(收录号：2-s2.0-84959289352)

语种：英文

外文关键词：Semiconductor quantum dots - Carbon - Nanocrystals - Sulfur compounds

摘要：A facile, economical, and green method has been developed to prepare a new fluorescent sensor based on ligninsulfonate/graphene quantum dots (SL/GQDs) core/shell hybrids for label-free sensitive and selective detection of Fe3+. The combination of these two materials brings both excellent photoluminescent properties (the fluorescence intensity of SL/GQDs composites is four times higher than the free GQDs) and nice selectivity. In this composite, SL molecule plays two key roles in the system as a π-rich and sulfur-incorporated compound to enhance the fluorescence and as a chelator to detect Fe3+. The obtained sensor presents excellent sensitivity and selectivity toward Fe3+ and exhibits a good linearity in the range of 0.005-500 μM with a detection limit as low as 0.5 nM. We have further explored the practical use of such proposed probe for Fe3+ determination in lake water samples, which shows promise in environmental determination. ? 2015 Elsevier B.V. All rights reserved.