Preparation of Graphene oxide- CuInS2/ZnS Quantum dots Nanocomposite as "Turn-On" Fluorescent Probe for the Detection of Polycyclic Aromatic Hydrocarbons in Aqueous Medium.
Rodney MalulekeSundararajan ParaniOluwatobi Samuel OluwafemiPublished in: Journal of fluorescence (2021)
Graphene oxide is well known for its adsorption properties with aromatic compounds. In this study, graphene oxide and eco-friendly ternary CuInS2/ZnS QDs were used to prepare graphene oxide-qunatum dots (GO-QDs) nanocomposite via in-situ method. The composite was characterized using ultraviolet-visible (UV-Vis) spectroscopy, photoluminescence (PL) spectroscopy, transmission electron microscopy (TEM) and Fourier transform infrared (FT-IR) spectroscopy. The effect of the polycyclic aromatic hydrocarbons (PAHs) on the PL properties of the nanocomposite was investigated. The results showed that the addition of PAHs increased the PL intensity of the nanocomposite. This "turn-on" fluorescence approach can be used for the successful detection of PAHs in aqueous media.
Keyphrases
- quantum dots
- polycyclic aromatic hydrocarbons
- fluorescent probe
- living cells
- sensitive detection
- single molecule
- loop mediated isothermal amplification
- energy transfer
- high resolution
- electron microscopy
- reduced graphene oxide
- atomic force microscopy
- ionic liquid
- solid state
- label free
- real time pcr
- aqueous solution
- heavy metals
- high intensity
- mass spectrometry
- gold nanoparticles
- amino acid
- visible light
- drinking water
- high speed
- carbon nanotubes