Facile preparation of large-scale α-Fe2O3 nanorod/SnO2 nanorod composites and their LPG-sensing properties

Dang Duc Vuong; Khuc Quang Trung; Nguyen Hoang Hung; Nguyen Van Hieu; Nguyen Duc Chien

doi:10.1016/j.jallcom.2014.02.089

Facile preparation of large-scale α-Fe₂O₃ nanorod/SnO₂ nanorod composites and their LPG-sensing properties

Dang Duc Vuong, Khuc Quang Trung, Nguyen Hoang Hung, Nguyen Van Hieu, Nguyen Duc Chien

New Industry Creation Hatchery Center (NICHe)

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

19 Citations (Scopus)

Abstract

α-Fe₂O₃ nanorods (NRs) with length and diameter of 300 and 50 nm, and SnO₂ NRs with length and diameter of 30 and 10 nm, respectively, were prepared through hydrothermal treatment method. Morphologies of α-Fe₂O₃ and SnO₂ NRs and their composites with different weight ratios were studied by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The SEM and TEM images showed SnO₂ NRs attached on (branch onto) the surface of the α-Fe₂O₃ NRs. Liquefied petroleum gas (LPG)-sensing properties of films with bare α-Fe₂O ₃, SnO₂ NRs, and their composite NRs were investigated. The composite of 75 wt% α-Fe₂O₃/25 wt% SnO ₂ exhibits the highest response to LPG at optimum operating temperature of 370 C. The improvement in the gas-sensing characteristics of the composite NRs compared with bare NRs is attributed to the formation of hetero-junctions in α-Fe₂O₃ NRs/SnO₂ NRs and to their porous structure.

Original language	English
Pages (from-to)	195-201
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	599
DOIs	https://doi.org/10.1016/j.jallcom.2014.02.089
Publication status	Published - 2014 Jun 25

Keywords

Gas sensor
Hydrothermal
Nanocomposite
Nanorods

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10.1016/j.jallcom.2014.02.089

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title = "Facile preparation of large-scale α-Fe2O3 nanorod/SnO2 nanorod composites and their LPG-sensing properties",

abstract = "α-Fe2O3 nanorods (NRs) with length and diameter of 300 and 50 nm, and SnO2 NRs with length and diameter of 30 and 10 nm, respectively, were prepared through hydrothermal treatment method. Morphologies of α-Fe2O3 and SnO2 NRs and their composites with different weight ratios were studied by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The SEM and TEM images showed SnO2 NRs attached on (branch onto) the surface of the α-Fe2O3 NRs. Liquefied petroleum gas (LPG)-sensing properties of films with bare α-Fe2O 3, SnO2 NRs, and their composite NRs were investigated. The composite of 75 wt% α-Fe2O3/25 wt% SnO 2 exhibits the highest response to LPG at optimum operating temperature of 370 C. The improvement in the gas-sensing characteristics of the composite NRs compared with bare NRs is attributed to the formation of hetero-junctions in α-Fe2O3 NRs/SnO2 NRs and to their porous structure.",

keywords = "Gas sensor, Hydrothermal, Nanocomposite, Nanorods",

author = "Vuong, {Dang Duc} and Trung, {Khuc Quang} and Hung, {Nguyen Hoang} and Hieu, {Nguyen Van} and Chien, {Nguyen Duc}",

note = "Funding Information: This research is funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant No. 103.99-2012.31 .",

year = "2014",

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doi = "10.1016/j.jallcom.2014.02.089",

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T1 - Facile preparation of large-scale α-Fe2O3 nanorod/SnO2 nanorod composites and their LPG-sensing properties

AU - Vuong, Dang Duc

AU - Trung, Khuc Quang

AU - Hung, Nguyen Hoang

AU - Hieu, Nguyen Van

AU - Chien, Nguyen Duc

N1 - Funding Information: This research is funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant No. 103.99-2012.31 .

PY - 2014/6/25

Y1 - 2014/6/25

N2 - α-Fe2O3 nanorods (NRs) with length and diameter of 300 and 50 nm, and SnO2 NRs with length and diameter of 30 and 10 nm, respectively, were prepared through hydrothermal treatment method. Morphologies of α-Fe2O3 and SnO2 NRs and their composites with different weight ratios were studied by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The SEM and TEM images showed SnO2 NRs attached on (branch onto) the surface of the α-Fe2O3 NRs. Liquefied petroleum gas (LPG)-sensing properties of films with bare α-Fe2O 3, SnO2 NRs, and their composite NRs were investigated. The composite of 75 wt% α-Fe2O3/25 wt% SnO 2 exhibits the highest response to LPG at optimum operating temperature of 370 C. The improvement in the gas-sensing characteristics of the composite NRs compared with bare NRs is attributed to the formation of hetero-junctions in α-Fe2O3 NRs/SnO2 NRs and to their porous structure.

AB - α-Fe2O3 nanorods (NRs) with length and diameter of 300 and 50 nm, and SnO2 NRs with length and diameter of 30 and 10 nm, respectively, were prepared through hydrothermal treatment method. Morphologies of α-Fe2O3 and SnO2 NRs and their composites with different weight ratios were studied by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The SEM and TEM images showed SnO2 NRs attached on (branch onto) the surface of the α-Fe2O3 NRs. Liquefied petroleum gas (LPG)-sensing properties of films with bare α-Fe2O 3, SnO2 NRs, and their composite NRs were investigated. The composite of 75 wt% α-Fe2O3/25 wt% SnO 2 exhibits the highest response to LPG at optimum operating temperature of 370 C. The improvement in the gas-sensing characteristics of the composite NRs compared with bare NRs is attributed to the formation of hetero-junctions in α-Fe2O3 NRs/SnO2 NRs and to their porous structure.

KW - Gas sensor

KW - Hydrothermal

KW - Nanocomposite

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Facile preparation of large-scale α-Fe₂O₃ nanorod/SnO₂ nanorod composites and their LPG-sensing properties

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Keywords

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