1. Electrochemical Hydrogen Peroxide Sensor Based on Macroporous Silicon.
- Author
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Al-Hardan, Naif H., Abdul Hamid, Muhammad Azmi, Shamsudin, Roslinda, AL-Khalqi, Ensaf Mohammed, Kar Keng, Lim, and Ahmed, Naser M.
- Subjects
AMPEROMETRIC sensors ,ELECTROCHEMICAL sensors ,HYDROGEN peroxide ,SILICON ,PORE size (Materials) - Abstract
Macroporous silicon was prepared through an anodization process; the prepared samples showed an average pore size ranging from 4 to 6 microns, and the depth of the pores in the silicon wafer was approximately 80 microns. The prepared samples were tested for hydrogen peroxide (H
2 O2 ) concentrations, which can be used for industrial and environmental sensing applications. The selected H2 O2 concentration covered a wide range from 10 to 5000°M. The tested samples showed a linear response through the tested H2 O2 concentrations with a sensitivity of 0.55 μA μM-1 ·cm-2 and lower detection limits of 4.35 μM at an operating voltage of 5 V. Furthermore, the electrode exhibited a rapid response with a response time of ca. two seconds. Furthermore, the prepared sensor showed a reasonable stability over a one-month time period. [ABSTRACT FROM AUTHOR]- Published
- 2018
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