Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control
Tungsten trioxide (WO3) is one of most widely investigated metal oxide semiconductors as gas sensing material because of tunable sensing performance toward different analytes through composition modulation (e.g., dopants) and various morphology and crystallinity. In this work, we synthesized WO3 nan...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-06-01
|
| Series: | Sensors and Actuators Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053923000450 |
| _version_ | 1797400906868719616 |
|---|---|
| author | Bingxin Yang Thien-Toan Tran JoAnna Milam-Guerrero Dung T. To Thomas Stahovich Nosang V. Myung |
| author_facet | Bingxin Yang Thien-Toan Tran JoAnna Milam-Guerrero Dung T. To Thomas Stahovich Nosang V. Myung |
| author_sort | Bingxin Yang |
| collection | DOAJ |
| description | Tungsten trioxide (WO3) is one of most widely investigated metal oxide semiconductors as gas sensing material because of tunable sensing performance toward different analytes through composition modulation (e.g., dopants) and various morphology and crystallinity. In this work, we synthesized WO3 nanofibers with different diameter and crystallinity through electrospinning of ammonium metatungstate hydrate (AMH)/polyvinyl pyrrolidone (PVP) nanofibers via design of experiments (DOE) followed by thermal heat treatment with the smaller average diameter being 23.0 nm. Through varying the calcination process, WO3 nanofibers with different crystallinity were also synthesized, with the smaller average grain size being 23.0 nm. These nanofibers were then exposed to many analytes (i.e., H2S, acetone, toluene, ethanol, ethyl benzene, NO2, NO, and methane) under different operating temperatures (i.e., 250 to 450 °C) to investigate their effect toward sensing response. These systematic studies indicated that nanocrystalline WO3 nanofibers with the smaller diameter (i.e., 20 nm) and/or smaller average grain sizes (i.e.,18.7 nm) exhibited best sensing performance independent of target analytes. The barrier energy was also correlated with the gas sensing performance experimentally. |
| first_indexed | 2024-03-09T02:02:19Z |
| format | Article |
| id | doaj.art-ef66576189c04de4a2189da7eef56ab3 |
| institution | Directory Open Access Journal |
| issn | 2666-0539 |
| language | English |
| last_indexed | 2024-03-09T02:02:19Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensors and Actuators Reports |
| spelling | doaj.art-ef66576189c04de4a2189da7eef56ab32023-12-08T04:46:11ZengElsevierSensors and Actuators Reports2666-05392024-06-017100182Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity controlBingxin Yang0Thien-Toan Tran1JoAnna Milam-Guerrero2Dung T. To3Thomas Stahovich4Nosang V. Myung5Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United StatesChemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United StatesChemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United StatesChemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United StatesDepartment of Mechanical Engineering, University of California, Riverside, 92521, CA, United StatesChemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United States; Corresponding author.Tungsten trioxide (WO3) is one of most widely investigated metal oxide semiconductors as gas sensing material because of tunable sensing performance toward different analytes through composition modulation (e.g., dopants) and various morphology and crystallinity. In this work, we synthesized WO3 nanofibers with different diameter and crystallinity through electrospinning of ammonium metatungstate hydrate (AMH)/polyvinyl pyrrolidone (PVP) nanofibers via design of experiments (DOE) followed by thermal heat treatment with the smaller average diameter being 23.0 nm. Through varying the calcination process, WO3 nanofibers with different crystallinity were also synthesized, with the smaller average grain size being 23.0 nm. These nanofibers were then exposed to many analytes (i.e., H2S, acetone, toluene, ethanol, ethyl benzene, NO2, NO, and methane) under different operating temperatures (i.e., 250 to 450 °C) to investigate their effect toward sensing response. These systematic studies indicated that nanocrystalline WO3 nanofibers with the smaller diameter (i.e., 20 nm) and/or smaller average grain sizes (i.e.,18.7 nm) exhibited best sensing performance independent of target analytes. The barrier energy was also correlated with the gas sensing performance experimentally.http://www.sciencedirect.com/science/article/pii/S2666053923000450Tungsten trioxideNanofiberGas sensorElectrospinningDesign of experimentsMetal oxides |
| spellingShingle | Bingxin Yang Thien-Toan Tran JoAnna Milam-Guerrero Dung T. To Thomas Stahovich Nosang V. Myung Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control Sensors and Actuators Reports Tungsten trioxide Nanofiber Gas sensor Electrospinning Design of experiments Metal oxides |
| title | Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control |
| title_full | Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control |
| title_fullStr | Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control |
| title_full_unstemmed | Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control |
| title_short | Enhancing gas sensing performance of tungsten trioxide (WO3) nanofibers through diameter and crystallinity control |
| title_sort | enhancing gas sensing performance of tungsten trioxide wo3 nanofibers through diameter and crystallinity control |
| topic | Tungsten trioxide Nanofiber Gas sensor Electrospinning Design of experiments Metal oxides |
| url | http://www.sciencedirect.com/science/article/pii/S2666053923000450 |
| work_keys_str_mv | AT bingxinyang enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol AT thientoantran enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol AT joannamilamguerrero enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol AT dungtto enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol AT thomasstahovich enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol AT nosangvmyung enhancinggassensingperformanceoftungstentrioxidewo3nanofibersthroughdiameterandcrystallinitycontrol |