Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection
Ag@SnO<sub>2</sub> nanosheets were prepared through a hydrothermal method followed by heat treatment and a liquid reduction process. Many Ag nanoparticles (Ag NPs) were dispersed uniformly over the surface of the SnO<sub>2</sub> nanosheets. The thickness of the SnO<sub>...
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MDPI AG
2023-02-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/11/2/116 |
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| author | Huaipeng Weng Xumeng Dong Yufeng Sun Haibo Ren Jiarui Huang Sang Woo Joo |
| author_facet | Huaipeng Weng Xumeng Dong Yufeng Sun Haibo Ren Jiarui Huang Sang Woo Joo |
| author_sort | Huaipeng Weng |
| collection | DOAJ |
| description | Ag@SnO<sub>2</sub> nanosheets were prepared through a hydrothermal method followed by heat treatment and a liquid reduction process. Many Ag nanoparticles (Ag NPs) were dispersed uniformly over the surface of the SnO<sub>2</sub> nanosheets. The thickness of the SnO<sub>2</sub> nanosheets was approximately 10 nm. After decoration with Ag NPs, the Ag@SnO<sub>2</sub> nanosheet sensors exhibited improved gas-sensing behaviors compared to the pure SnO<sub>2</sub> nanosheet sensor. The response of cross-linked SnO<sub>2</sub> nanosheets decorated by Ag NP sensors for 100 ppm formaldehyde vapor was up to 101.4, which was double that (45.5) of the pure SnO<sub>2</sub> nanosheet sensor. The response and recovery times of the Ag@SnO<sub>2</sub> sensor were 21 s and 23 s, respectively. The Ag@SnO<sub>2</sub> nanosheet sensors showed reasonable cycling stability, as demonstrated by testing with 100 ppm formaldehyde 10 times. The superior gas-sensing behaviors of the Ag@SnO<sub>2</sub> sensor were due to the large specific surface area, cross-linked nanostructure, and synergistic effect of the Ag NPs with huge sensitizing active sites and numerous SnO<sub>2</sub> nanosheets. |
| first_indexed | 2024-03-11T08:59:59Z |
| format | Article |
| id | doaj.art-71ee7840667345cf8cccb4d3da57494c |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-11T08:59:59Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
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| series | Chemosensors |
| spelling | doaj.art-71ee7840667345cf8cccb4d3da57494c2023-11-16T19:46:30ZengMDPI AGChemosensors2227-90402023-02-0111211610.3390/chemosensors11020116Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor DetectionHuaipeng Weng0Xumeng Dong1Yufeng Sun2Haibo Ren3Jiarui Huang4Sang Woo Joo5Key Lab for High Performance Nonferrous Metals of Anhui Province, Anhui Polytechnic University, Wuhu 241000, ChinaKey Lab for High Performance Nonferrous Metals of Anhui Province, Anhui Polytechnic University, Wuhu 241000, ChinaKey Lab for High Performance Nonferrous Metals of Anhui Province, Anhui Polytechnic University, Wuhu 241000, ChinaKey Lab for High Performance Nonferrous Metals of Anhui Province, Anhui Polytechnic University, Wuhu 241000, ChinaKey Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, ChinaSchool of Mechanical Engineering, Yeungnam University, Gyeongsan 712749, Gyeoungbuk, Republic of KoreaAg@SnO<sub>2</sub> nanosheets were prepared through a hydrothermal method followed by heat treatment and a liquid reduction process. Many Ag nanoparticles (Ag NPs) were dispersed uniformly over the surface of the SnO<sub>2</sub> nanosheets. The thickness of the SnO<sub>2</sub> nanosheets was approximately 10 nm. After decoration with Ag NPs, the Ag@SnO<sub>2</sub> nanosheet sensors exhibited improved gas-sensing behaviors compared to the pure SnO<sub>2</sub> nanosheet sensor. The response of cross-linked SnO<sub>2</sub> nanosheets decorated by Ag NP sensors for 100 ppm formaldehyde vapor was up to 101.4, which was double that (45.5) of the pure SnO<sub>2</sub> nanosheet sensor. The response and recovery times of the Ag@SnO<sub>2</sub> sensor were 21 s and 23 s, respectively. The Ag@SnO<sub>2</sub> nanosheet sensors showed reasonable cycling stability, as demonstrated by testing with 100 ppm formaldehyde 10 times. The superior gas-sensing behaviors of the Ag@SnO<sub>2</sub> sensor were due to the large specific surface area, cross-linked nanostructure, and synergistic effect of the Ag NPs with huge sensitizing active sites and numerous SnO<sub>2</sub> nanosheets.https://www.mdpi.com/2227-9040/11/2/116SnO<sub>2</sub>Ag nanoparticlesnanosheetgas sensorformaldehyde |
| spellingShingle | Huaipeng Weng Xumeng Dong Yufeng Sun Haibo Ren Jiarui Huang Sang Woo Joo Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection Chemosensors SnO<sub>2</sub> Ag nanoparticles nanosheet gas sensor formaldehyde |
| title | Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection |
| title_full | Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection |
| title_fullStr | Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection |
| title_full_unstemmed | Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection |
| title_short | Cross-Linked SnO<sub>2</sub> Nanosheets Modified by Ag Nanoparticles for Formaldehyde Vapor Detection |
| title_sort | cross linked sno sub 2 sub nanosheets modified by ag nanoparticles for formaldehyde vapor detection |
| topic | SnO<sub>2</sub> Ag nanoparticles nanosheet gas sensor formaldehyde |
| url | https://www.mdpi.com/2227-9040/11/2/116 |
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