Continuous Detection of Pb(II) utilizing Chitosan-Graphene Oxide Surface Plasmon Resonance Sensors based on Ag/Au and Au/Ag/Au Nanolayers

Authors

DOI:

https://doi.org/10.53655/joe.e8336w

Keywords:

Surface plasmon resonance, multi-metallic, chitosan, graphene oxide, heavy metal

Abstract

This work demonstrates the effect of Ag/Au and Au/Ag/Au nanolayers on the performance of chitosan (CS)-graphene oxide (GO) surface plasmon resonance (SPR) sensors for Pb(II) ion detection. The CS-GO SPR sensors are  fabricated on a bi-metallic 40 nm Ag/10 nm Au and tri-metallic 10 nm Au/40 nm Ag/10 nm Au nanolayers. The  sensors are tested with Pb(II) ion solution of concentrations 0.1 to 5 ppm using SPR spectroscopy. The results show  that the CS-GO SPR sensor on the bimetallic Ag/Au gives a gradual shift in SPR angle from 0.1 to 1 ppm and slightly  linear from 3 to 5 ppm. Meanwhile, the CS-GO SPR sensor on the tri-metallic Au/Ag/Au nanolayers provides an  extended linearity range from 1 to 5 ppm with the highest shift in SPR angle of 1.8o. Additionally, the tri-metallic CS-GO SPR sensor also exhibits the greatest SNR of 0.25 as compared to 0.15 of the one on the bi-metallic nanolayers.  Thus, the studies prove that the tri-metallic Au/Ag/Au nanolayer is an effective and simple approach to improve 
the performance of a CS-GO SPR sensor for Pb(II) ion detection.

Author Biographies

Nur Hasiba Kamaruddin, Universiti Kebangsaan Malaysia

Nur Hasiba Kamaruddin received the M.Eng. degree in electronic engineering (solid-state devices) from The University of Sheffield, U.K., and the Ph.D. degree in electronic engineering (SPR sensors) from Universiti Kebangsaan Malaysia. Her research works are mainly in multi-metallic SPR sensors for environmental applications. Her current research interest is in optical sensors for environmental monitoring.

Nur Hidayah Azeman, Universiti Kebangsaan Malaysia

Nur Hidayah Azeman received the B.Sc. degree in resource chemistry from Universiti Malaysia Sarawak, in 2009, the master’s degree in environment and the Ph.D. degree in smart sensing materials from Universiti Putra Malaysia, in 2012 and 2017, respectively. She is currently a Postdoctoral Researcher with the Photonics Technology Laboratory, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. Her project focusing on the designing and synthesizing the sensing materials for the optical sensors’ application. Her research interests include functional materials, chemical sensors, optical sensors and its applications.

Mohd Hadri Hafiz Mokhtar, Universiti Kebangsaan Malaysia

Mohd Hadri Hafiz Mokhtar (M’18) received the M.Eng. degree in electrical and electronics from the University of Birmingham, U.K., in 2009, and the Ph.D. degree in electrical engineering from Imperial College London, in 2016. He is currently a Senior Lecturer with the Center of Advanced Electronic and Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. His current research interest is in fiber-based opticalimaging and optical sensors and its applications.

Ahmad Ashrif A Bakar, Universiti Kebangsaan Malaysia

Ahmad Ashrif A. Bakar (M’02–SM’12) received the bachelor’s degree in electrical and electronics engineering from Universiti Tenaga Nasional, in 2002, the M.Sc. degree in communications and network system engineering from Universiti Putra Malaysia, in 2004, and the Ph.D. degree in electrical engineering from The University of Queensland, Australia, in 2010. He is currently an Associate Professor with the Center of Advanced Electronic and Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. He is actively involved in the Optical Society of America and Fibre Optic Association Inc., USA. He is devoting his research on optical sensors in environmental and biomedical application, specialized in plasmonic waveguide sensor, polymeric electro-optic modulator waveguide, interferometer, evanescent field sensors, and devices based on nanoparticles and nanostructures. He has been a member of OSA since 2014.

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15-07-2021

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Kamaruddin, N. H., Azeman, N. H., Mokhtar, M. H. H., & A Bakar, A. A. (2021). Continuous Detection of Pb(II) utilizing Chitosan-Graphene Oxide Surface Plasmon Resonance Sensors based on Ag/Au and Au/Ag/Au Nanolayers. Jurnal OptoElektronik. https://doi.org/10.53655/joe.e8336w

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Copyright (c) 2021 Nur Hasiba Kamaruddin, Nur Hidayah Azeman, Mohd Hadri Hafiz Mokhtar, Ahmad Ashrif A Bakar

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