Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods
Zinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements....
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MDPI AG
2016-06-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/7/1004 |
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| author | Naif H. Al-Hardan Muhammad Azmi Abdul Hamid Roslinda Shamsudin Norinsan Kamil Othman Lim Kar Keng |
| author_facet | Naif H. Al-Hardan Muhammad Azmi Abdul Hamid Roslinda Shamsudin Norinsan Kamil Othman Lim Kar Keng |
| author_sort | Naif H. Al-Hardan |
| collection | DOAJ |
| description | Zinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements. The measured currents, as a function of H2O2 concentrations ranging from 10 μM to 700 μM, revealed two distinct behaviours and good performance, with a lower detection limit (LOD) of 42 μM for the low range of H2O2 concentrations (first region), and a LOD of 143.5 μM for the higher range of H2O2 concentrations (second region). The prepared ZnO NRs show excellent electrocatalytic activity. This enables a measurable and stable output current. The results were correlated with the oxidation process of the H2O2 and revealed a good performance for the ZnO NR non-enzymatic H2O2 sensor. |
| first_indexed | 2024-04-11T22:03:03Z |
| format | Article |
| id | doaj.art-41287a977380462fb51bfccd42248cb9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:03:03Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-41287a977380462fb51bfccd42248cb92022-12-22T04:00:51ZengMDPI AGSensors1424-82202016-06-01167100410.3390/s16071004s16071004Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide NanorodsNaif H. Al-Hardan0Muhammad Azmi Abdul Hamid1Roslinda Shamsudin2Norinsan Kamil Othman3Lim Kar Keng4School of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, MalaysiaSchool of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, MalaysiaSchool of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, MalaysiaSchool of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, MalaysiaSchool of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, MalaysiaZinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements. The measured currents, as a function of H2O2 concentrations ranging from 10 μM to 700 μM, revealed two distinct behaviours and good performance, with a lower detection limit (LOD) of 42 μM for the low range of H2O2 concentrations (first region), and a LOD of 143.5 μM for the higher range of H2O2 concentrations (second region). The prepared ZnO NRs show excellent electrocatalytic activity. This enables a measurable and stable output current. The results were correlated with the oxidation process of the H2O2 and revealed a good performance for the ZnO NR non-enzymatic H2O2 sensor.http://www.mdpi.com/1424-8220/16/7/1004non-enzymatic biosensorzinc oxidenanorodshydrogen peroxide |
| spellingShingle | Naif H. Al-Hardan Muhammad Azmi Abdul Hamid Roslinda Shamsudin Norinsan Kamil Othman Lim Kar Keng Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods Sensors non-enzymatic biosensor zinc oxide nanorods hydrogen peroxide |
| title | Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods |
| title_full | Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods |
| title_fullStr | Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods |
| title_full_unstemmed | Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods |
| title_short | Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods |
| title_sort | amperometric non enzymatic hydrogen peroxide sensor based on aligned zinc oxide nanorods |
| topic | non-enzymatic biosensor zinc oxide nanorods hydrogen peroxide |
| url | http://www.mdpi.com/1424-8220/16/7/1004 |
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