Electrochemical hydrogen peroxide sensor based on macroporous silicon

Naif H. Al-Hardan, Muhammad Azmi Abdul Hamid, Roslinda Shamsudin, Ensaf Mohammed Al-Khalqi, Lim Kar Keng, Naser M. Ahmed

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 (H2 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 µM. 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.

Original languageEnglish
Article number716
JournalSensors (Switzerland)
Volume18
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018

Fingerprint

Silicon
hydrogen peroxide
Silicon wafers
Hydrogen peroxide
Hydrogen Peroxide
Pore size
Electrodes
sensors
Sensors
Electric potential
silicon
Reaction Time
porosity
Limit of Detection
wafers
electrodes
sensitivity
electric potential

Keywords

  • Amperometric sensors
  • Electrochemical sensors
  • Hydrogen peroxide
  • Macroporous silicon

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Electrochemical hydrogen peroxide sensor based on macroporous silicon. / Al-Hardan, Naif H.; Abdul Hamid, Muhammad Azmi; Shamsudin, Roslinda; Al-Khalqi, Ensaf Mohammed; Keng, Lim Kar; Ahmed, Naser M.

In: Sensors (Switzerland), Vol. 18, No. 3, 716, 01.03.2018.

Research output: Contribution to journalArticle

Al-Hardan, Naif H. ; Abdul Hamid, Muhammad Azmi ; Shamsudin, Roslinda ; Al-Khalqi, Ensaf Mohammed ; Keng, Lim Kar ; Ahmed, Naser M. / Electrochemical hydrogen peroxide sensor based on macroporous silicon. In: Sensors (Switzerland). 2018 ; Vol. 18, No. 3.
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