Synthesis of porous ZnFe2O4/SnO2 core-shell spheres for high-performance acetone gas sensing

Lifang He; Jingjie Hu; Qiming Yuan; Zhangcheng Xia; Ling Jin; Hongliang Gao; Liyuan Fan; Xiangfeng Chu; Fanli Meng

doi:10.1016/j.snb.2022.133123

Synthesis of porous ZnFe₂O₄/SnO₂ core-shell spheres for high-performance acetone gas sensing

Lifang He
, Jingjie Hu
, Qiming Yuan
, Zhangcheng Xia
, Ling Jin^*
, Hongliang Gao
, Liyuan Fan
, Xiangfeng Chu
, Fanli Meng

^*Corresponding author for this work

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

36 Citations (Scopus)

Abstract

For developing promising gas sensing materials, constructing porous and heterojunction structures within the whole semiconductor oxide composites was an ideal strategy. However, it was always difficult because there existed grain boundaries. Herein, the pre-synthesized tiny SnO₂ nanospheres could be evenly combined with ZnFe₂O₄ to form the ZnFe₂O₄/SnO₂ (ZFO/SNO) composite with porous core-shell spheres structure via a simple solvent thermal reaction followed by the calcination treatment. Molar ratios of Zn to Sn were adjusted, and the resultant porous ZFO/SNO composites with different morphology were obtained, and their gas sensing properties were investigated and compared. The result indicated that the porous ZFO/SNO composite with a Zn to Sn ratio of 1:0.7 (ZFO/SNO-0.7) showed much better acetone sensing performance than that of bare porous ZnFe₂O₄ spheres and other ZFO/SNO composites. It exhibited a high response value of 120 to 100 ppm of acetone at 210℃ with good stability, and the detection limit can reach 0.1 ppm. The remarkable sensor performance of the porous ZFO/SNO-0.7 composite was attributed to its rich heterojunctions, porous structure and small nanoparticle size.

Original language	English
Article number	133123
Journal	Sensors and Actuators B: Chemical
Volume	378
Early online date	13 Dec 2022
DOIs	https://doi.org/10.1016/j.snb.2022.133123
Publication status	Published - 01 Mar 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

Acetone
Gas sensor
Heterogeneous
SnO
ZnFeO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2022.133123Licence: Unspecified

Cite this

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title = "Synthesis of porous ZnFe2O4/SnO2 core-shell spheres for high-performance acetone gas sensing",

abstract = "For developing promising gas sensing materials, constructing porous and heterojunction structures within the whole semiconductor oxide composites was an ideal strategy. However, it was always difficult because there existed grain boundaries. Herein, the pre-synthesized tiny SnO2 nanospheres could be evenly combined with ZnFe2O4 to form the ZnFe2O4/SnO2 (ZFO/SNO) composite with porous core-shell spheres structure via a simple solvent thermal reaction followed by the calcination treatment. Molar ratios of Zn to Sn were adjusted, and the resultant porous ZFO/SNO composites with different morphology were obtained, and their gas sensing properties were investigated and compared. The result indicated that the porous ZFO/SNO composite with a Zn to Sn ratio of 1:0.7 (ZFO/SNO-0.7) showed much better acetone sensing performance than that of bare porous ZnFe2O4 spheres and other ZFO/SNO composites. It exhibited a high response value of 120 to 100 ppm of acetone at 210℃ with good stability, and the detection limit can reach 0.1 ppm. The remarkable sensor performance of the porous ZFO/SNO-0.7 composite was attributed to its rich heterojunctions, porous structure and small nanoparticle size.",

keywords = "Acetone, Gas sensor, Heterogeneous, SnO, ZnFeO",

author = "Lifang He and Jingjie Hu and Qiming Yuan and Zhangcheng Xia and Ling Jin and Hongliang Gao and Liyuan Fan and Xiangfeng Chu and Fanli Meng",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = mar,

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doi = "10.1016/j.snb.2022.133123",

language = "English",

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T1 - Synthesis of porous ZnFe2O4/SnO2 core-shell spheres for high-performance acetone gas sensing

AU - He, Lifang

AU - Hu, Jingjie

AU - Yuan, Qiming

AU - Xia, Zhangcheng

AU - Jin, Ling

AU - Gao, Hongliang

AU - Fan, Liyuan

AU - Chu, Xiangfeng

AU - Meng, Fanli

PY - 2023/3/1

Y1 - 2023/3/1

N2 - For developing promising gas sensing materials, constructing porous and heterojunction structures within the whole semiconductor oxide composites was an ideal strategy. However, it was always difficult because there existed grain boundaries. Herein, the pre-synthesized tiny SnO2 nanospheres could be evenly combined with ZnFe2O4 to form the ZnFe2O4/SnO2 (ZFO/SNO) composite with porous core-shell spheres structure via a simple solvent thermal reaction followed by the calcination treatment. Molar ratios of Zn to Sn were adjusted, and the resultant porous ZFO/SNO composites with different morphology were obtained, and their gas sensing properties were investigated and compared. The result indicated that the porous ZFO/SNO composite with a Zn to Sn ratio of 1:0.7 (ZFO/SNO-0.7) showed much better acetone sensing performance than that of bare porous ZnFe2O4 spheres and other ZFO/SNO composites. It exhibited a high response value of 120 to 100 ppm of acetone at 210℃ with good stability, and the detection limit can reach 0.1 ppm. The remarkable sensor performance of the porous ZFO/SNO-0.7 composite was attributed to its rich heterojunctions, porous structure and small nanoparticle size.

AB - For developing promising gas sensing materials, constructing porous and heterojunction structures within the whole semiconductor oxide composites was an ideal strategy. However, it was always difficult because there existed grain boundaries. Herein, the pre-synthesized tiny SnO2 nanospheres could be evenly combined with ZnFe2O4 to form the ZnFe2O4/SnO2 (ZFO/SNO) composite with porous core-shell spheres structure via a simple solvent thermal reaction followed by the calcination treatment. Molar ratios of Zn to Sn were adjusted, and the resultant porous ZFO/SNO composites with different morphology were obtained, and their gas sensing properties were investigated and compared. The result indicated that the porous ZFO/SNO composite with a Zn to Sn ratio of 1:0.7 (ZFO/SNO-0.7) showed much better acetone sensing performance than that of bare porous ZnFe2O4 spheres and other ZFO/SNO composites. It exhibited a high response value of 120 to 100 ppm of acetone at 210℃ with good stability, and the detection limit can reach 0.1 ppm. The remarkable sensor performance of the porous ZFO/SNO-0.7 composite was attributed to its rich heterojunctions, porous structure and small nanoparticle size.

KW - Acetone

KW - Gas sensor

KW - Heterogeneous

KW - SnO

KW - ZnFeO

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DO - 10.1016/j.snb.2022.133123

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