Cadmium detection by polyaniline-zinc oxide composite thin-film sensor
The conventional analytical techniques for detection of cadmium (Cd) requires expensive equipment and skilled operators. Although sensor technology developed nowadays are miniature and user-friendly, most of them are high in fabrication costing and complex in prepari...
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| Format: | Article |
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PERINTIS eJournal
2018
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| _version_ | 1796863538894995456 |
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| author | Haron, Saharudin Wong, Joon Fatt |
| author_facet | Haron, Saharudin Wong, Joon Fatt |
| author_sort | Haron, Saharudin |
| collection | ePrints |
| description | The conventional analytical techniques for detection of cadmium (Cd) requires expensive equipment and skilled operators. Although sensor technology developed nowadays are miniature and user-friendly, most of them are high in fabrication costing and complex in preparing its sensing material. As such, composite of polyaniline (PANI) and zinc oxide (ZnO) are selected to fabricate a simpler thin-film sensor with lower costing for Cd detection. Cd concentration is varied in the range from 1 ppm to 100 ppm are used to analyze the sensitivity of the sensor, and the result shows that a higher Cd concentration leads to a higher voltage reading, in the range of 18.16 mV to 65.10 mV. This is attributed to the mechanism of Cd2+ ions adsorption on the surface of ZnO, which induces a change in conductivity. Besides, PANI functions as a conducting polymer that stabilizes ZnO to enhance the detection performance. |
| first_indexed | 2024-03-05T20:28:16Z |
| format | Article |
| id | utm.eprints-82205 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:28:16Z |
| publishDate | 2018 |
| publisher | PERINTIS eJournal |
| record_format | dspace |
| spelling | utm.eprints-822052019-11-10T03:44:33Z http://eprints.utm.my/82205/ Cadmium detection by polyaniline-zinc oxide composite thin-film sensor Haron, Saharudin Wong, Joon Fatt TP Chemical technology The conventional analytical techniques for detection of cadmium (Cd) requires expensive equipment and skilled operators. Although sensor technology developed nowadays are miniature and user-friendly, most of them are high in fabrication costing and complex in preparing its sensing material. As such, composite of polyaniline (PANI) and zinc oxide (ZnO) are selected to fabricate a simpler thin-film sensor with lower costing for Cd detection. Cd concentration is varied in the range from 1 ppm to 100 ppm are used to analyze the sensitivity of the sensor, and the result shows that a higher Cd concentration leads to a higher voltage reading, in the range of 18.16 mV to 65.10 mV. This is attributed to the mechanism of Cd2+ ions adsorption on the surface of ZnO, which induces a change in conductivity. Besides, PANI functions as a conducting polymer that stabilizes ZnO to enhance the detection performance. PERINTIS eJournal 2018 Article PeerReviewed Haron, Saharudin and Wong, Joon Fatt (2018) Cadmium detection by polyaniline-zinc oxide composite thin-film sensor. PERINTIS eJournal, 8 (2). pp. 74-85. ISSN 2232-0725 https://perintis.org.my/ejournal/ |
| spellingShingle | TP Chemical technology Haron, Saharudin Wong, Joon Fatt Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title | Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title_full | Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title_fullStr | Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title_full_unstemmed | Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title_short | Cadmium detection by polyaniline-zinc oxide composite thin-film sensor |
| title_sort | cadmium detection by polyaniline zinc oxide composite thin film sensor |
| topic | TP Chemical technology |
| work_keys_str_mv | AT haronsaharudin cadmiumdetectionbypolyanilinezincoxidecompositethinfilmsensor AT wongjoonfatt cadmiumdetectionbypolyanilinezincoxidecompositethinfilmsensor |