Al-Hardan, Naif H. and Hamid, Muhammad Azmi Abdul and Keng, Lim Kar and AL-Khalqi, Ensaf Mohammed and Jalar, Azman and Chiu, Wee Siong (2021) Low-cost fabrication of a pH sensor based on writing directly over parchment-type paper with pencil. Journal of Materials Science: Materials in Electronics, 32 (7). pp. 9431-9439. ISSN 0957-4522, DOI https://doi.org/10.1007/s10854-021-05607-0.
Full text not available from this repository.Abstract
Herein, we introduce a low-cost and straightforward method for preparing pH sensors based on parchment-type paper and pencil traces as a base and electrode, respectively. The hydrophobic feature of the parchment paper supports the relatively long life of the proposed pH sensor. The results indicate that the present sensors have a Nernstian response with a Nernstian slope of 52.1 +/- 1.5 mV/pH and a good linearity of 0.995 from pH 4 to 10. The stability of the proposed electrode is approximately 0.75 mV/h. The prepared electrodes show a relatively long operating life compared with the published results of ordinary paper-based pH devices. However, the Nernstian factor decreases over time and stabilizes at approximately 28 mV/pH after two months. This approach provides a low-cost and reproducible pH sensor.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Kebangsaan Malaysia (UKM) [GGPM-2020-047] |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 08 Aug 2022 06:47 |
| Last Modified: | 08 Aug 2022 06:47 |
| URI: | http://eprints.um.edu.my/id/eprint/28431 |
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