Enhanced photostability and sensing performance of graphene quantum dots encapsulated in electrospun polyacrylonitrile nanofibrous filtering membranes

[Display omitted] •Graphene quantum dots/polyacrylonitrile membranes were prepared by electrospinning.•GQD-PAN filters are turn-off fluorescence sensors for free chlorine detection.•Membranes have fast sensing response to chlorine concentration (10–600 μM range).•Filters show high sensitivity (DL = ...

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Veröffentlicht in:	Sensors and actuators. B, Chemical Chemical, 2018-06, Vol.262, p.902-912
Hauptverfasser:	Ruiz, Virginia, Pérez-Marquez, Ana, Maudes, Jon, Grande, Hans-Jürgen, Murillo, Nieves
Format:	Artikel
Sprache:	eng
Schlagworte:	Buffer solutions Chlorine Chlorine detection Detection Electrospinning Encapsulation Filtration Fluorescence Fluorescence sensor Graphene Graphene quantum dots Light irradiation Luminous intensity Mathematical analysis Membranes Nanofibers Photoluminescence Polyacrylonitrile Quantum dots Reproducibility Sensitivity analysis Stability Studies Water purification
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Zusammenfassung:	[Display omitted] •Graphene quantum dots/polyacrylonitrile membranes were prepared by electrospinning.•GQD-PAN filters are turn-off fluorescence sensors for free chlorine detection.•Membranes have fast sensing response to chlorine concentration (10–600 μM range).•Filters show high sensitivity (DL = 2 μM detection limit), reproducibility (
ISSN:	0925-4005 1873-3077
DOI:	10.1016/j.snb.2018.02.081