Selective Hydrogen Sensing Using Fe2O3/TiO2 Nanocomposites

Salman Latif; Fahad Abdulaziz; Sahar Y. Rajeh; Yassin Aweis Jeilani; Nadiyah M. Alabdallah; Mohammed Danish; Amir Al-Ahmed

doi:10.1109/JSEN.2025.3599663

Selective Hydrogen Sensing Using Fe₂O₃/TiO₂ Nanocomposites

Salman Latif
, Fahad Abdulaziz
, Sahar Y. Rajeh
, Yassin Aweis Jeilani
, Nadiyah M. Alabdallah
, Mohammed Danish
, Amir Al-Ahmed^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The nanocomposites based on α-Fe₂O₃/TiO₂ nanocomposite were hydrothermally synthesized and characterized. A sensor device incorporating the nanocomposite was fabricated to assess its hydrogen (H₂) gas sensing performance. Among the composites, Fe₂O₃/TiO₂ (10:1) showed the highest sensing signal (S) of 109.8, response with response time (T₉₀) 295 s, and the recovery time (Tr₉₀) 97 s for the H₂ concentration of 1000 ppm. When different concentrations of H₂ gas (15, 50, 100, and 1000 ppm) were used, a quick response time was obtained at 15 ppm H₂ concentration. For the interference study, a mixed gas composition of H₂ (100 ppm), NO₂ (10 ppm), CH₄ (100 ppm), and CO (100 ppm) was used to study the selectivity. The Fe₂O₃/TiO₂ (10:1) composite was found to have clear selectivity with a sharp sensing signal of 48.24, which was much higher than the rest of the signals.

Original language	English
Pages (from-to)	37035-37042
Number of pages	8
Journal	IEEE Sensors Journal
Volume	25
Issue number	19
DOIs	https://doi.org/10.1109/JSEN.2025.3599663
State	Published - 2025

Bibliographical note

Publisher Copyright:
© 2025 IEEE. All rights reserved.

Keywords

hydrogen (H)
interference study
response with response time
sensing signal
α-FeO/TiO nanocomposite

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

Access to Document

10.1109/JSEN.2025.3599663

Cite this

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title = "Selective Hydrogen Sensing Using Fe2O3/TiO2 Nanocomposites",

abstract = "The nanocomposites based on α-Fe2O3/TiO2 nanocomposite were hydrothermally synthesized and characterized. A sensor device incorporating the nanocomposite was fabricated to assess its hydrogen (H2) gas sensing performance. Among the composites, Fe2O3/TiO2 (10:1) showed the highest sensing signal (S) of 109.8, response with response time (T90) 295 s, and the recovery time (Tr90) 97 s for the H2 concentration of 1000 ppm. When different concentrations of H2 gas (15, 50, 100, and 1000 ppm) were used, a quick response time was obtained at 15 ppm H2 concentration. For the interference study, a mixed gas composition of H2 (100 ppm), NO2 (10 ppm), CH4 (100 ppm), and CO (100 ppm) was used to study the selectivity. The Fe2O3/TiO2 (10:1) composite was found to have clear selectivity with a sharp sensing signal of 48.24, which was much higher than the rest of the signals.",

keywords = "hydrogen (H), interference study, response with response time, sensing signal, α-FeO/TiO nanocomposite",

author = "Salman Latif and Fahad Abdulaziz and Rajeh, \{Sahar Y.\} and Jeilani, \{Yassin Aweis\} and Alabdallah, \{Nadiyah M.\} and Mohammed Danish and Amir Al-Ahmed",

year = "2025",

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T1 - Selective Hydrogen Sensing Using Fe2O3/TiO2 Nanocomposites

AU - Latif, Salman

AU - Abdulaziz, Fahad

AU - Rajeh, Sahar Y.

AU - Jeilani, Yassin Aweis

AU - Alabdallah, Nadiyah M.

AU - Danish, Mohammed

AU - Al-Ahmed, Amir

PY - 2025

Y1 - 2025

N2 - The nanocomposites based on α-Fe2O3/TiO2 nanocomposite were hydrothermally synthesized and characterized. A sensor device incorporating the nanocomposite was fabricated to assess its hydrogen (H2) gas sensing performance. Among the composites, Fe2O3/TiO2 (10:1) showed the highest sensing signal (S) of 109.8, response with response time (T90) 295 s, and the recovery time (Tr90) 97 s for the H2 concentration of 1000 ppm. When different concentrations of H2 gas (15, 50, 100, and 1000 ppm) were used, a quick response time was obtained at 15 ppm H2 concentration. For the interference study, a mixed gas composition of H2 (100 ppm), NO2 (10 ppm), CH4 (100 ppm), and CO (100 ppm) was used to study the selectivity. The Fe2O3/TiO2 (10:1) composite was found to have clear selectivity with a sharp sensing signal of 48.24, which was much higher than the rest of the signals.

AB - The nanocomposites based on α-Fe2O3/TiO2 nanocomposite were hydrothermally synthesized and characterized. A sensor device incorporating the nanocomposite was fabricated to assess its hydrogen (H2) gas sensing performance. Among the composites, Fe2O3/TiO2 (10:1) showed the highest sensing signal (S) of 109.8, response with response time (T90) 295 s, and the recovery time (Tr90) 97 s for the H2 concentration of 1000 ppm. When different concentrations of H2 gas (15, 50, 100, and 1000 ppm) were used, a quick response time was obtained at 15 ppm H2 concentration. For the interference study, a mixed gas composition of H2 (100 ppm), NO2 (10 ppm), CH4 (100 ppm), and CO (100 ppm) was used to study the selectivity. The Fe2O3/TiO2 (10:1) composite was found to have clear selectivity with a sharp sensing signal of 48.24, which was much higher than the rest of the signals.

KW - hydrogen (H)

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KW - response with response time

KW - sensing signal

KW - α-FeO/TiO nanocomposite

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