Electrochemical Hydrogen Peroxide Sensor Based on Macroporous Silicon

Sensors
Naif H Al-HardanNaser M Ahmed

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 (H₂O₂) concentrations, which can be used for industrial and environmental sensing applications. The selected H₂O₂ concentration covered a wide range from 10 to 5000 μM. The tested samples showed a linear response through the tested H₂O₂ 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.

References

Aug 1, 1996·Journal of the Neurological Sciences·A M GormanT Cotter
Oct 29, 1996·Proceedings of the National Academy of Sciences of the United States of America·S OkudaH Katsuki
May 30, 2008·Advanced Drug Delivery Reviews·Emily J AnglinMichael J Sailor
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Nov 6, 2012·Biosensors & Bioelectronics·Saakshi Dhanekar, Swati Jain

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Citations

Apr 13, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Fatemeh BehrouzifarAzade Ghorbani-HasanSaraei

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Methods Mentioned

BETA
biosensors
biosensing
scanning electron microscopy

Software Mentioned

LabView

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