Localized SPR for Pb(II) ion sensing utilizing chitosan/reduced graphene oxide nanocomposite

Authors

  • Suraya Abdullah Universiti Kebangsaan Malaysia
  • Nur Hidayah Azeman Universiti Kebangsaan Malaysia https://orcid.org/0000-0001-5799-143X
  • Nur Hasiba Kamaruddin Universiti Kebangsaan Malaysia
  • Nadhratun Naiim Mobarak Universiti Kebangsaan Malaysia
  • Ahmad Ashrif A Bakar Universiti Kebangsaan Malaysia

DOI:

https://doi.org/10.53655/joe.z3238q

Keywords:

Surface plasmon resonance, chitosan, graphene oxide, nanocomposite, heavy metal

Abstract

In this work, a simple and highly sensitive localized surface plasmon resonance (LSPR) technique had been developed for detection of Pb(II) utilizing chitosan/reduced graphene oxide (CS/rGO) nanocomposite as the sensing material. Gold nanoparticles (AuNP) had been incorporated with the nanocomposite material to induce strong LSPR responses. CS/rGO nanocomposite was coated on top of AuNP and had been utilized as active layer for Pb(II) ion sensing. The morphology and physical properties of gold nanoparticle-chitosan/reduced graphene oxide (AuNP-CS/rGO) nanocomposite was studied using field-emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and x-ray diffraction (XRD) analysis. FESEM exhibits a rough and wrinkle surface of AuNP-CS/rGO after the addition of rGO. AFM shows a higher surface roughness for AuNP-CS/rGO due to the presence of oxygen atoms in rGO where these oxygen atoms provide more sites for adsorption of Pb(II), hence enhance the sensitivity of the sensor. A good sensitivity of the LSPR sensor for detection of Pb(II) utilizing AuNP-CS/rGO was obtained which is 1.544 ppm-1 and the linearity of the sensor are 0.99 and 0.97. In stability study, AuNP-CS/rGO exhibits a good repeatability with relative standard deviation of 2% for 0.01 ppm.

Author Biographies

Suraya Abdullah, Universiti Kebangsaan Malaysia

Suraya Abdullah received her Bachelor of Electronic Engineering (2008) from University Malaysia Perlis and MEng of Microelectronics Engineering (2011) from RMIT University, Australia. Currently, she is a Ph.D. student at Universiti Kebangsaan Malaysia and her study is focus on localized surface plasmon resonance (LSPR).

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.

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.

Nadhratun Naiim Mobarak, Universiti Kebangsaan Malaysia

Nadhratun Naiim Mobarak received the B.Sc., M.Sc., and Ph.D. degrees in chemistry from Universiti Kebangsaan Malaysia (UKM), Malaysia, in 2008, 2011, and 2015, respectively. She is currently a Senior Lecturer with the Center for Advanced Materials and Renewable Resources (CAMARR), Faculty of Science and Technology, Universiti Kebangsaan Malaysia. Her research interests include the functional biomaterial, water adsorbent and energy conversion and storage devices.

Ahmad Ashrif A Bakar, Universiti Kebangsaan Malaysia

Ahmad Ashrif A. Bakar 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

How to Cite

Abdullah, S., Azeman, N. H., Kamaruddin, N. H., Mobarak, N. N. ., & A Bakar, A. A. (2021). Localized SPR for Pb(II) ion sensing utilizing chitosan/reduced graphene oxide nanocomposite. Jurnal OptoElektronik. https://doi.org/10.53655/joe.z3238q

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Volume 1 (2021)

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Copyright (c) 2021 Suraya Abdullah, Nur Hidayah Azeman, Nur Hasiba Kamaruddin, Nadhratun Naiim Mobarak, Ahmad Ashrif A Bakar

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