Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection
We demonstrate the enhancement of surface plasmon resonance (SPR) technique by implementing a multi-metallic layers of Au–Ag–Au nanostructure in the chitosan-graphene oxide (CS-GO) SPR sensor for lead(II) ion detection. The performance of the sensor is analyzed via SPR measurements, from which the s...
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| Format: | Article |
| Language: | English |
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Elsevier
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16900/ http://psasir.upm.edu.my/id/eprint/16900/1/Enhancement%20of%20chitosan-graphene%20oxide%20SPR%20sensor%20with%20a%20multi-metallic%20layers%20of%20Au%E2%80%93Ag%E2%80%93Au%20nanostructure%20for%20lead%28II%29%20ion%20detection.pdf |
| _version_ | 1848843090850217984 |
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| author | Kamaruddin, Nur Hasiba A. Bakar, Ahmad Ashrif Yaacob, Mohd Hanif Mahdi, Mohd Adzir Zan, Mohd Saiful Dzulkefly Shaari, Sahbudin |
| author_facet | Kamaruddin, Nur Hasiba A. Bakar, Ahmad Ashrif Yaacob, Mohd Hanif Mahdi, Mohd Adzir Zan, Mohd Saiful Dzulkefly Shaari, Sahbudin |
| author_sort | Kamaruddin, Nur Hasiba |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | We demonstrate the enhancement of surface plasmon resonance (SPR) technique by implementing a multi-metallic layers of Au–Ag–Au nanostructure in the chitosan-graphene oxide (CS-GO) SPR sensor for lead(II) ion detection. The performance of the sensor is analyzed via SPR measurements, from which the sensitivity, signal-to-noise ratio and repeatability are determined. The nanostructure layers are characterized using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). We showed that the proposed structure has increased the shift in the SPR angle up to 3.5° within the range of 0.1–1 ppm due to the enhanced evanescent field at the sensing layer-analyte interface. This sensor also exhibits great repeatability which benefits from the stable multi-metallic nanostructure. The SNR value of 0.92 for 5 ppm lead(II) ion solution and reasonable linearity range up to that concentration shows that the tri-metallic CS-GO SPR sensor gives a good response towards the lead(II) ion solution. The CS-GO SPR sensor is also sensitive to at least a 10−5 change in the refractive index. The results prove that our proposed tri-metallic CS-GO SPR sensor demonstrates a strong performance and reliability for lead(II) ion detection in accordance with the standardized lead safety level for wastewater. |
| first_indexed | 2025-11-15T08:09:30Z |
| format | Article |
| id | upm-16900 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:09:30Z |
| publishDate | 2016 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-169002016-06-08T02:09:28Z http://psasir.upm.edu.my/id/eprint/16900/ Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection Kamaruddin, Nur Hasiba A. Bakar, Ahmad Ashrif Yaacob, Mohd Hanif Mahdi, Mohd Adzir Zan, Mohd Saiful Dzulkefly Shaari, Sahbudin We demonstrate the enhancement of surface plasmon resonance (SPR) technique by implementing a multi-metallic layers of Au–Ag–Au nanostructure in the chitosan-graphene oxide (CS-GO) SPR sensor for lead(II) ion detection. The performance of the sensor is analyzed via SPR measurements, from which the sensitivity, signal-to-noise ratio and repeatability are determined. The nanostructure layers are characterized using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). We showed that the proposed structure has increased the shift in the SPR angle up to 3.5° within the range of 0.1–1 ppm due to the enhanced evanescent field at the sensing layer-analyte interface. This sensor also exhibits great repeatability which benefits from the stable multi-metallic nanostructure. The SNR value of 0.92 for 5 ppm lead(II) ion solution and reasonable linearity range up to that concentration shows that the tri-metallic CS-GO SPR sensor gives a good response towards the lead(II) ion solution. The CS-GO SPR sensor is also sensitive to at least a 10−5 change in the refractive index. The results prove that our proposed tri-metallic CS-GO SPR sensor demonstrates a strong performance and reliability for lead(II) ion detection in accordance with the standardized lead safety level for wastewater. Elsevier 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16900/1/Enhancement%20of%20chitosan-graphene%20oxide%20SPR%20sensor%20with%20a%20multi-metallic%20layers%20of%20Au%E2%80%93Ag%E2%80%93Au%20nanostructure%20for%20lead%28II%29%20ion%20detection.pdf Kamaruddin, Nur Hasiba and A. Bakar, Ahmad Ashrif and Yaacob, Mohd Hanif and Mahdi, Mohd Adzir and Zan, Mohd Saiful Dzulkefly and Shaari, Sahbudin (2016) Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection. Applied Surface Science, 361. pp. 177-184. ISSN 0169-4332; ESSN: 1873-5584 http://www.sciencedirect.com/science/article/pii/S0169433215027944 10.1016/j.apsusc.2015.11.099 |
| spellingShingle | Kamaruddin, Nur Hasiba A. Bakar, Ahmad Ashrif Yaacob, Mohd Hanif Mahdi, Mohd Adzir Zan, Mohd Saiful Dzulkefly Shaari, Sahbudin Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title | Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title_full | Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title_fullStr | Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title_full_unstemmed | Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title_short | Enhancement of chitosan-graphene oxide SPR sensor with a multi-metallic layers of Au–Ag–Au nanostructure for lead(II) ion detection |
| title_sort | enhancement of chitosan-graphene oxide spr sensor with a multi-metallic layers of au–ag–au nanostructure for lead(ii) ion detection |
| url | http://psasir.upm.edu.my/id/eprint/16900/ http://psasir.upm.edu.my/id/eprint/16900/ http://psasir.upm.edu.my/id/eprint/16900/ http://psasir.upm.edu.my/id/eprint/16900/1/Enhancement%20of%20chitosan-graphene%20oxide%20SPR%20sensor%20with%20a%20multi-metallic%20layers%20of%20Au%E2%80%93Ag%E2%80%93Au%20nanostructure%20for%20lead%28II%29%20ion%20detection.pdf |