Photoluminescent carbon dot sensor for carboxylated multiwalled carbon nanotube detection in river water
Photoluminescent carbon dot sensor for carboxylated multiwalled carbon nanotube detection in river water
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DOI：
10.1016/j.snb.2014.10.102
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发表时间：
2015-02-01
影响因子：
8.4
通讯作者：
Valcarcel, Miguel
中科院分区：
文献类型：
--
作者：
Cayuela, Angelina;Laura Soriano, M.;Valcarcel, Miguel
A simple, rapid and efficient luminescent method based on carbon dots (CDs) as nanosensor of carboxylated multiwalled carbon nanotubes (c-MWCNTs) has been developed for the first time. Luminescent CDs were successfully synthesized by making use of bottom-up methodology without the need of further surface passivation, obtaining the highest quantum yield (QY: 19%) for cellulose microcrystalline as precursor. This simple and economic preparation of luminescent CDs was accompanied by an evaluation of their ability for detecting c-MWCNTs in water owing to the formation of hydrogen bond interactions. The limits of detection (LOD) and quantification (LOQ) for c-MWCNTs were 0.37 and 1.25 mu g mL(-1), respectively. The proposed sensing method was validated in spiked river water, demonstrating its potential in environment water samples. (C) 2014 Elsevier B.V. All rights reserved.
