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Surface ion imprinted nano-fibre Bragg grating for detection of multiple heavy metal ions

Descrizione del progetto

Un avanzato sensore a fibre ottiche consente il rilevamento in situ di diversi metalli pesanti

I metalli pesanti rappresentano una delle minacce più gravi per l’ambiente e la salute umana, poiché contaminano l’acqua e il suolo e si accumulano negli organi vitali. Sensori economici, compatti e portatili in grado di rilevare contemporaneamente e in tempo reale più metalli pesanti continuano ad essere in gran parte inesistenti. Con il sostegno del programma di azioni Marie Skłodowska-Curie, il progetto Clean-Water mira a rispondere a questa esigenza. Il progetto integrerà fibre ottiche multiplexer, reticoli di Bragg in nanofibra (componenti fotonici avanzati) e rivestimenti avanzati, tra cui film d’oro, ossido di grafene e polimeri selettivi per ioni. I sensori avanzati per metalli pesanti basati su fibra ottica garantiranno un elevato livello di sensibilità e selettività, fornendo un nuovo potente strumento per il monitoraggio e la tutela delle risorse idriche e dell’ambiente.

Obiettivo

Heavy metal (HM) pollution is one of the most serious environmental problems undermining global sustainability. Presence of HM in water further contaminates soil, enters food cycle, and finally accumulates in brains, kidneys, livers, and stomach, undermining human health. There is a market gap in low-cost on-line HM sensor, and this is needed to measure HM in-situ on-demand to reduce, mitigate or control environment contamination. Hence, an innovative solution is required to exploit the advantages of optical fibre sensors (OFS), in developing a compact, cost effective, fast, robust, and portable sensor for the accurate detection of several HM ions, simultaneously. In this project, besides the key focus of training the Researcher, the innovative potential of multiplexing OFS will be additionally combined with an enhanced light-matter interaction in tapered nano optical fibre (NOF) to increase its sensitivity and thus create a new generation of OFS to detect multiple HM ions simultaneously. Subsequently, wavelength selective grating will be inscribed on the NFBG along with Au film coated to enhance sensitivity. Additionally, graphene oxide (GO), and ion imprinted polymer-chitosan (IIP-CS) will be coated, which will not only improve the selectivity, but the added polymer will also strengthen the NFBG.
In this project, the Researcher will numerically optimize the structural parameters and study the effect of fabrication tolerances of the OFS by using the finite element method. Subsequently, optimised OFS will be fabricated by a using laser induced grating fabrication technique and the Au/GO/(Pb2+, Cu2+, and Cr2+)/IP-CS will be coated on 3 concatenated sections of the NFBG surface by using dip coating method for simultaneous detection of Pb, Cu and Cr. The project aims to exploit multiplexing capability of OFS, which will use only a single interrogator and thus produce a cost-effective, sensitive, fast and on-line HM ions to provide safe water and safer environment.

Campo scientifico (EuroSciVoc)

Parole chiave

Programma(i)

Argomento(i)

Meccanismo di finanziamento

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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(si apre in una nuova finestra) HORIZON-MSCA-2024-PF-01

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Coordinatore

CITY ST GEORGES UNIVERSITY OF LONDON
Contributo netto dell'UE
€ 276 187,92
Indirizzo
NORTHAMPTON SQUARE
EC1V 0HB LONDON
Regno Unito
Regione
London Inner London — East Haringey and Islington
Tipo di attività
Higher or Secondary Education Establishments
Collegamenti
Costo totale
Nessun dato