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Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance

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Bibliographic Details
Main Author: Chu, Manh Hung
Other Authors: Han, Viet Phuong
Format: Article
Language:English
Published: Sensors and Actuators A: Physical 2021
Subjects:
ZnO/SnO2 nanofibers
Au doped
Electrospinning
H2S gas sensor
Online Access:https://www.sciencedirect.com/science/article/abs/pii/S0924424720317696?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1929
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spelling oai:localhost:PNK-19292022-08-17T05:54:52Z Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance Chu, Manh Hung Han, Viet Phuong Vu, Van Thinh Le, Thi Hong Nguyen, Tat Thang Nguyen, Hong Hanh Nguyen, Quang Dich Nguyen, Van Hieu Nguyen, Van Duy Nguyen, Duc Hoa ZnO/SnO2 nanofibers Au doped Electrospinning H2S gas sensor Q1 Nanofibers of ZnO-SnO2 nanocomposites doped with Au crystals were synthesized by an electrospinning method for enhancement of H2S gas sensing performance. The mixed solution of zinc acetate dihydrate and tin(II) chloride dihydrate, dissolved in ethanol/DMF solvent, was spun directly on the interdigital Pt electrodes for sensor fabrication. Thermal treatment was carried out to convert the spun nanofibers into ZnO-SnO2 nanocomposites doped with Au crystals. SEM and TEM observation confirmed the formation of porous nanofibers with an average diameter of about 120 nm. X-ray diffraction studies revealed that the nanocomposites of ZnO and SnO2 phases were formed, but not ZnSnO3, despite the precursor solution being mixed on the atomic scale from the starting solution. Doping with 0.001, 0.005 and 0.01 wt.% of Au slightly changed the morphology of the nanofibers because the Au was not doped into the crystals of ZnO or SnO2, but mostly existed as the surface decoration. This ensured that the effective surface catalyzed the gas reaction, thus enhance the sensing performance. Gas sensitivity to H2S gas was improved by approximately 700% with the optimal doping concentration of Au. 2021-07-05T07:21:39Z 2021-07-05T07:21:39Z 2021 Article https://www.sciencedirect.com/science/article/abs/pii/S0924424720317696?via%3Dihub https://dlib.phenikaa-uni.edu.vn/handle/PNK/1929 10.1016/j.sna.2020.112454 en application/pdf Sensors and Actuators A: Physical
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic ZnO/SnO2 nanofibers
Au doped
Electrospinning
H2S gas sensor
spellingShingle ZnO/SnO2 nanofibers
Au doped
Electrospinning
H2S gas sensor
Chu, Manh Hung
Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
description Q1
author2 Han, Viet Phuong
author_facet Han, Viet Phuong
Chu, Manh Hung
format Article
author Chu, Manh Hung
author_sort Chu, Manh Hung
title Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
title_short Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
title_full Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
title_fullStr Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
title_full_unstemmed Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
title_sort au doped zno/sno2 composite nanofibers for enhanced h2s gas sensing performance
publisher Sensors and Actuators A: Physical
publishDate 2021
url https://www.sciencedirect.com/science/article/abs/pii/S0924424720317696?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1929
_version_ 1751856297467183104
score 8.891053

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