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Facile synthesis of Ag nanoparticles-decorated WO3 nanorods and their application in O2 sensing
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Zhu, Yiyun, Blackman, Chris, Zhou, Pengfei, Ayyala, Sai Kiran, Covington, James A., Shen, Yanbai, Liang, Jinsheng, Zhong, Xiangxi, Knapp, Caroline and Zhou, Ye (2023) Facile synthesis of Ag nanoparticles-decorated WO3 nanorods and their application in O2 sensing. Journal of Alloys and Compounds, 936 . 167930. doi:10.1016/j.jallcom.2022.167930 ISSN 0925-8388.
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WRAP-facile-synthesis-Ag-nanoparticles-decorated-WO3-nanorods-application-O2-sensing-Covington-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (15Mb) | Preview |
Official URL: https://doi.org/10.1016/j.jallcom.2022.167930
Abstract
Here we describe a two-step aerosol-assisted chemical vapor deposition (AACVD) synthesis method for the fabrication of Ag nanoparticles (NPs) decorated WO3 nanorods (NRs), evaluating the use of different organometallic silver precursors. Physical property characterization techniques including XRD, SEM, TEM, and XPS were carried out to investigate the composition and morphology of the pristine WO3 NRs and functionalized WO3 NRs with Ag NPs. The results showed that uniform WO3 NRs were obtained with a length of 600 nm to several μm and a diameter of 100–200 nm, and Ag NPs were well-dispersed on the surface of WO3 NRs with the size of 6–20 nm. The nanostructured WO3 thin films were synthesized and integrated directly onto alumina platforms via the AACVD method to fabricate gas sensors. Gas sensing performance was investigated towards different O2 concentrations between 1% and 20% at various operating temperatures. The sensing response revealed that an increase in baseline resistance was observed for the Ag-decorated WO3 sensors fabricated by using organometallic silver precursors, and the decoration of Ag NPs on WO3 sensors improved sensing properties as compared to the undecorated ones. The possible formation process and sensing mechanism of the Ag NPs decorated WO3 NRs are proposed.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| SWORD Depositor: | Library Publications Router | ||||||||
| Library of Congress Subject Headings (LCSH): | Chemical vapor deposition, Metal Nanoparticles, Nanostructured materials -- Synthesis, Detectors, Tungsten oxides | ||||||||
| Journal or Publication Title: | Journal of Alloys and Compounds | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 0925-8388 | ||||||||
| Official Date: | 5 March 2023 | ||||||||
| Dates: |
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| Volume: | 936 | ||||||||
| Article Number: | 167930 | ||||||||
| DOI: | 10.1016/j.jallcom.2022.167930 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 6 January 2023 | ||||||||
| Date of first compliant Open Access: | 6 January 2023 | ||||||||
| RIOXX Funder/Project Grant: |
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