Synthesis of carbon dots for Al<sup>3+</sup> sensing in water by fluorescence assay
Xiping Mei, Dongxiu Wang, Lin Zhang, Junfen Li, Chuan Dong
Abstract
Abstract Fifty‐four Eucommia ulmoides leaves were subjected to a hydrothermal technique to synthesize carbon dots (CDs) of 3.55 ± 1.45 nm size. The nanomaterial possessed excellent stability and strong fluorescence emission (φ f 42.3%). In a neutral buffer solution, the fluorescence signals of CDs solution were enhanced by aluminium ion without interference from other ions. Degree of enhancement correlated linearly with the Al 3+ content in the range 0.01–2.5 mM. Response of this method was fast and sensitive (detection limit was 23 nM). The CDs performed successfully as a sensitive sensor for trace Al 3+ determination in water samples, and satisfactory results were obtained.
Topics & Concepts
Detection limitFluorescenceAnalytical Chemistry (journal)IonCarbon fibersMaterials scienceEucommia ulmoidesChemistryNanoprobeNanomaterialsNuclear chemistryNanoparticleNanotechnologyChromatographyComposite numberOpticsComposite materialPhysicsPathologyOrganic chemistryAlternative medicineTraditional Chinese medicineMedicineCarbon and Quantum Dots ApplicationsMolecular Sensors and Ion DetectionElectrochemical sensors and biosensors