Photoluminescent carbon dot sensor for carboxylated multiwalled carbon nanotube detection in river water

被引:39
作者
Cayuela, Angelina [1 ]
Laura Soriano, M. [1 ]
Valcarcel, Miguel [1 ]
机构
[1] Univ Cordoba, Dept Analyt Chem, E-14071 Cordoba, Spain
关键词
Carbon dots; Cellulose microcrystalline; Photoluminescent sensor; Multiwalled carbon nanotubes; River water; ONE-STEP SYNTHESIS; SELECTIVE DETECTION; NANOPARTICLES; LUMINESCENCE; ADSORPTION; SAMPLES; PROBES; WASTE; IONS;
D O I
10.1016/j.snb.2014.10.102
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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.
引用
收藏
页码:596 / 601
页数:6
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