Cargando…

Photoluminescent AuNCs@UiO-66 for Ultrasensitive Detection of Mercury in Water Samples

[Image: see text] In this work, we synthesized gold nanoclusters within a Zirconium-based metal–organic framework (AuNCs@UiO-66) that may create new prospects for the development of novel sensing materials for biosensor applications. The resulting AuNCs@UiO-66 nanocomposite exhibits red fluorescence...

Descripción completa

Detalles Bibliográficos
Autores principales: Govindaraju, Saravanan, Puthiaraj, Pillaiyar, Lee, Min-Ho, Yun, Kyusik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2018
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6645368/
https://www.ncbi.nlm.nih.gov/pubmed/31459285
http://dx.doi.org/10.1021/acsomega.8b01665
Descripción
Sumario:[Image: see text] In this work, we synthesized gold nanoclusters within a Zirconium-based metal–organic framework (AuNCs@UiO-66) that may create new prospects for the development of novel sensing materials for biosensor applications. The resulting AuNCs@UiO-66 nanocomposite exhibits red fluorescence with a high quantum yield (11%), and the AuNCs are homogeneously distributed along UiO-66. Analytical and morphological characterizations of the resulting material were carried out by UV–visible spectroscopy, photoluminescence spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy. The synthesized AuNCs@UiO-66 nanocomposite was used for the effective detection of Hg(2+) ions with a detection limit as low as 77 pM. Moreover, the fabricated sensors also successfully detected Hg(2+) in real water samples. This sensor is stable and highly fluorescent, developed using a simple fabrication method, and would be constructive for the detection of other metal ions and in biological applications.