Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions
In this work, a refractive index sensor using TiO2 extracted from moringa leaves-based nanocomposite thin film was developed to detect cadmium ions in an aqueous solution. The experimental results showed a good sensitivity response of 0.4825° ppm−1, a strong binding affinity of 1.4362 ppm−1, and a l...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
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Elsevier
2022
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| _version_ | 1796984292712120320 |
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| author | Sheh Omar, Nur Alia Irmawati, Ramli Fen, Yap Wing Muhamad, Ernee Noryana Kamal Eddin, Faten Bashar Anas, Nur Ain Asyiqin Md Ramdzan, Nur Syahira Muhamad Fauzi, Nurul Illya Mahdi, Mohd Adzir |
| author_facet | Sheh Omar, Nur Alia Irmawati, Ramli Fen, Yap Wing Muhamad, Ernee Noryana Kamal Eddin, Faten Bashar Anas, Nur Ain Asyiqin Md Ramdzan, Nur Syahira Muhamad Fauzi, Nurul Illya Mahdi, Mohd Adzir |
| author_sort | Sheh Omar, Nur Alia |
| collection | UPM |
| description | In this work, a refractive index sensor using TiO2 extracted from moringa leaves-based nanocomposite thin film was developed to detect cadmium ions in an aqueous solution. The experimental results showed a good sensitivity response of 0.4825° ppm−1, a strong binding affinity of 1.4362 ppm−1, and a low signal-to-noise ratio of 0.0755. The proposed sensor also showed good selectivity towards cadmium ions compared to zinc and mercury ions. The changes in the optical properties of titanium dioxide-based nanocomposite thin film towards different concentrations of cadmium ions solution were further demonstrated theoretically. Also, the observed increase in the surface roughness using atomic force microscopy proved the binding of Cd ions to the sensor film. This study is proposing a new potential of titanium dioxide extracted from moringa leaves-based nanocomposite thin film as a surface refractive index sensor for the detection of cadmium ions. |
| first_indexed | 2024-03-06T11:18:17Z |
| format | Article |
| id | upm.eprints-103370 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-03-06T11:18:17Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-1033702023-06-14T02:34:42Z http://psasir.upm.edu.my/id/eprint/103370/ Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions Sheh Omar, Nur Alia Irmawati, Ramli Fen, Yap Wing Muhamad, Ernee Noryana Kamal Eddin, Faten Bashar Anas, Nur Ain Asyiqin Md Ramdzan, Nur Syahira Muhamad Fauzi, Nurul Illya Mahdi, Mohd Adzir In this work, a refractive index sensor using TiO2 extracted from moringa leaves-based nanocomposite thin film was developed to detect cadmium ions in an aqueous solution. The experimental results showed a good sensitivity response of 0.4825° ppm−1, a strong binding affinity of 1.4362 ppm−1, and a low signal-to-noise ratio of 0.0755. The proposed sensor also showed good selectivity towards cadmium ions compared to zinc and mercury ions. The changes in the optical properties of titanium dioxide-based nanocomposite thin film towards different concentrations of cadmium ions solution were further demonstrated theoretically. Also, the observed increase in the surface roughness using atomic force microscopy proved the binding of Cd ions to the sensor film. This study is proposing a new potential of titanium dioxide extracted from moringa leaves-based nanocomposite thin film as a surface refractive index sensor for the detection of cadmium ions. Elsevier 2022 Article PeerReviewed Sheh Omar, Nur Alia and Irmawati, Ramli and Fen, Yap Wing and Muhamad, Ernee Noryana and Kamal Eddin, Faten Bashar and Anas, Nur Ain Asyiqin and Md Ramdzan, Nur Syahira and Muhamad Fauzi, Nurul Illya and Mahdi, Mohd Adzir (2022) Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions. Measurement, 187. art. no. 110287. pp. 1-9. ISSN 0263-2241 https://www.sciencedirect.com/science/article/pii/S0263224121011908 10.1016/j.measurement.2021.110287 |
| spellingShingle | Sheh Omar, Nur Alia Irmawati, Ramli Fen, Yap Wing Muhamad, Ernee Noryana Kamal Eddin, Faten Bashar Anas, Nur Ain Asyiqin Md Ramdzan, Nur Syahira Muhamad Fauzi, Nurul Illya Mahdi, Mohd Adzir Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title | Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title_full | Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title_fullStr | Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title_full_unstemmed | Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title_short | Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
| title_sort | surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions |
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