Staff View: Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor

Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor

Mesoporous hematite nanoparticles (HNPs) encapsulated SiO2 -TiO2 nanocomposites (STNC) are synthesized and heat-treated at low-temperature 50 degrees C for 1 h (STNC/1h) and 2h (STNC/2h) by sol-gel process for hydrocarbons chemical sensing. Microscopic analysis revealed the thermally stable hierarch...

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Main Authors:	Islam, Shumaila, Aziz, Muhammad Safwan, Bakhtiar, Hazri, Alshoaibi, Adil, Harun, Sulaiman Wadi, Riaz, Saira, Naseem, Shahzad
Format:	Article
Published:	Elsevier 2021
Subjects:	QC Physics QD Chemistry TP Chemical technology
Online Access:	http://eprints.um.edu.my/28784/
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spelling	my.um.eprints.287842022-08-19T08:09:14Z http://eprints.um.edu.my/28784/ Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor Islam, Shumaila Aziz, Muhammad Safwan Bakhtiar, Hazri Alshoaibi, Adil Harun, Sulaiman Wadi Riaz, Saira Naseem, Shahzad QC Physics QD Chemistry TP Chemical technology Mesoporous hematite nanoparticles (HNPs) encapsulated SiO2 -TiO2 nanocomposites (STNC) are synthesized and heat-treated at low-temperature 50 degrees C for 1 h (STNC/1h) and 2h (STNC/2h) by sol-gel process for hydrocarbons chemical sensing. Microscopic analysis revealed the thermally stable hierarchical structure of HNPs, which changed into aggregated porous spherical morphology after encapsulation in STNC and heat treatment. The low surface area of HNPs similar to 55 m(2) /g which is increased up to 289 m(2)/g for H-STNC/2h, is advantageous to enhance sensing device activity. Magnetic properties exhibited the superparamagnetic behavior of H-STNC/2h. The H-STNC/2h coated fiber optic chemical sensor revealed a linear response towards the higher carbon chains, sensitivity is calculated as 5.3 counts per unit variations in the carbon chain at 515 nm with R-2 similar to 0.98. The proposed magnetic sensing device has good reversibility, stability, and validity without any leaching traces. Elsevier 2021-10 Article PeerReviewed Islam, Shumaila and Aziz, Muhammad Safwan and Bakhtiar, Hazri and Alshoaibi, Adil and Harun, Sulaiman Wadi and Riaz, Saira and Naseem, Shahzad (2021) Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor. Microporous and Mesoporous Materials, 326. ISSN 1387-1811, DOI https://doi.org/10.1016/j.micromeso.2021.111398 <https://doi.org/10.1016/j.micromeso.2021.111398>. 10.1016/j.micromeso.2021.111398
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QC Physics QD Chemistry TP Chemical technology
spellingShingle	QC Physics QD Chemistry TP Chemical technology Islam, Shumaila Aziz, Muhammad Safwan Bakhtiar, Hazri Alshoaibi, Adil Harun, Sulaiman Wadi Riaz, Saira Naseem, Shahzad Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
description	Mesoporous hematite nanoparticles (HNPs) encapsulated SiO2 -TiO2 nanocomposites (STNC) are synthesized and heat-treated at low-temperature 50 degrees C for 1 h (STNC/1h) and 2h (STNC/2h) by sol-gel process for hydrocarbons chemical sensing. Microscopic analysis revealed the thermally stable hierarchical structure of HNPs, which changed into aggregated porous spherical morphology after encapsulation in STNC and heat treatment. The low surface area of HNPs similar to 55 m(2) /g which is increased up to 289 m(2)/g for H-STNC/2h, is advantageous to enhance sensing device activity. Magnetic properties exhibited the superparamagnetic behavior of H-STNC/2h. The H-STNC/2h coated fiber optic chemical sensor revealed a linear response towards the higher carbon chains, sensitivity is calculated as 5.3 counts per unit variations in the carbon chain at 515 nm with R-2 similar to 0.98. The proposed magnetic sensing device has good reversibility, stability, and validity without any leaching traces.
format	Article
author	Islam, Shumaila Aziz, Muhammad Safwan Bakhtiar, Hazri Alshoaibi, Adil Harun, Sulaiman Wadi Riaz, Saira Naseem, Shahzad
author_facet	Islam, Shumaila Aziz, Muhammad Safwan Bakhtiar, Hazri Alshoaibi, Adil Harun, Sulaiman Wadi Riaz, Saira Naseem, Shahzad
author_sort	Islam, Shumaila
title	Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
title_short	Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
title_full	Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
title_fullStr	Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
title_full_unstemmed	Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor
title_sort	optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: fiber optic chemical sensor
publisher	Elsevier
publishDate	2021
url	http://eprints.um.edu.my/28784/
_version_	1744649138150047744
score	13.211869

Optically functionalized hierarchical hematite assembled silica-titania nanocomposites for hydrocarbon detection: Fiber optic chemical sensor

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