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| Azevedo, Nuno Monteiro |
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Rathinam, R.
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Publications (4/4 displayed)
- 2023Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Compositescitations
- 2022A Simple Approach of CQDs@MoS2 Nanosheets for Turn-On Fluorescence Sensor for Detection of Pb2+ Ionscitations
- 2022Influence of Nano-/Microfiller Addition on Mechanical and Morphological Performance of Kenaf/Glass Fibre-Reinforced Hybrid Compositescitations
- 2022Mn-BIM Based Photo-Catalytic Degradation of Hazardous Industrial Organic Pollutants in Fresh Water
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article
A Simple Approach of CQDs@MoS2 Nanosheets for Turn-On Fluorescence Sensor for Detection of Pb2+ Ions
Abstract
The 2-Dimennsionnal nanocomposites are applied for the ennhannced fluorescence sensor for analysing heavy metal ions is explored using a simple novel technique based on green manufactured (CQDs@MoS2) nanocomposite. The emission intensity of CQDs have a better dispersibility, and MoS2 nanosheets have an excellent exfoliation, allowing the CQDs to adhere to the surface and form a label-free sensors. The emission peak of CQDs was quenched by transferring non-radiative energy as of CQDs to MoS2 sheets in an excited state. However, when metal ions are included in the CQDs@MoS2 nanocomposite, it develops a solid surface combined with the carbon dots nanosheets, that might aid in CD recovery. More intriguingly, the sensing performance of MoS2 nanosheets were examined at various pH levels to better recognize the change in surface charge, which resulted in significantly improved responsiveness for identification of Pb (II) ions with LODs of 0.9 nM. Furthermore, it is suggested that present method are intended to be quick, easy, cost effective, environmental friendly for sensing heavy metal ions.