In this study, a novel photoluminescence
material for the detection
of tributyltin (TBT) was developed by using a paper-based nanocomposite
system. For this purpose, molecularly imprinted polymeric nanoparticles
(MIN) were synthesized with mini-emulsion polymerization technique.
Graphene quantum dots obtained by the hydrothermal pyrolysis were
immobilized to the nanoparticle surface via EDC-NHS coupling. The
fabrication of sensing platform for TBT can be divided into two steps
that are the preparation of nanocomposite and the applying the nanocomposite
onto nitrocellulose membrane. The selectivity constant and association
kinetics were calculated to analyze the interaction of TBT with immobilized
MINs. The results proved that the developed nanosensor is promising
for the determination of TBT with high selectivity and sensitivity
reaching a detection limit of 0.23 ppt in seawater. This novel photoluminescent
nanosensor has the potential to pave the way for further studies and
applications.
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