NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets
Herein, we report a simple and scalable synthesis route to prepare Ag-functionalized porous ZnO sheets and their enhanced NO2 gas sensing properties. Porous ZnO sheets functionalized with well-dispersed submicron Ag particles were prepared by using a hydrothermal method-based one-pot synthesis route...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2023-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2023/9021169 |
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| _version_ | 1850089164838535168 |
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| author | Min Young Kim Jeong Yun Hwang Ali Mirzaei Sun-Woo Choi Sang-il Kim Hyun-Sik Kim Sun-Jae Kim Jong Wook Roh Myung Sik Choi Kyu Hyoung Lee Seung Yong Lee Changhyun Jin |
| author_facet | Min Young Kim Jeong Yun Hwang Ali Mirzaei Sun-Woo Choi Sang-il Kim Hyun-Sik Kim Sun-Jae Kim Jong Wook Roh Myung Sik Choi Kyu Hyoung Lee Seung Yong Lee Changhyun Jin |
| author_sort | Min Young Kim |
| collection | DOAJ |
| description | Herein, we report a simple and scalable synthesis route to prepare Ag-functionalized porous ZnO sheets and their enhanced NO2 gas sensing properties. Porous ZnO sheets functionalized with well-dispersed submicron Ag particles were prepared by using a hydrothermal method-based one-pot synthesis route from Zn and Ag precursors. NO2 gas sensing performance (response, selectivity, response time, and recovery time) was optimized at 200°C in the gas sensor fabricated with 3 at% Ag-functionalized porous ZnO sheets. We demonstrated a response (Rg/Ra) of 17.18 to 10 ppm NO2 gas and also obtained a high response of 14.05 even at 60% relative humidity due to the synergetic effect of improved NO2 gas adsorption in the presence of Ag particles and increased resistance by the formation of Schottky barrier at Ag-ZnO heterojunctions. |
| format | Article |
| id | doaj-art-288735ff644c4007a27cdd7bbc3df9eb |
| institution | DOAJ |
| issn | 2048-4038 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-288735ff644c4007a27cdd7bbc3df9eb2025-08-20T02:42:50ZengSAGE PublishingAdsorption Science & Technology2048-40382023-01-01202310.1155/2023/9021169NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO SheetsMin Young Kim0Jeong Yun Hwang1Ali Mirzaei2Sun-Woo Choi3Sang-il Kim4Hyun-Sik Kim5Sun-Jae Kim6Jong Wook Roh7Myung Sik Choi8Kyu Hyoung Lee9Seung Yong Lee10Changhyun Jin11Department of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringFaculty of Nanotechnology and Advanced Materials EngineeringSchool of Nano & Materials Science and EngineeringSchool of Nano & Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringHerein, we report a simple and scalable synthesis route to prepare Ag-functionalized porous ZnO sheets and their enhanced NO2 gas sensing properties. Porous ZnO sheets functionalized with well-dispersed submicron Ag particles were prepared by using a hydrothermal method-based one-pot synthesis route from Zn and Ag precursors. NO2 gas sensing performance (response, selectivity, response time, and recovery time) was optimized at 200°C in the gas sensor fabricated with 3 at% Ag-functionalized porous ZnO sheets. We demonstrated a response (Rg/Ra) of 17.18 to 10 ppm NO2 gas and also obtained a high response of 14.05 even at 60% relative humidity due to the synergetic effect of improved NO2 gas adsorption in the presence of Ag particles and increased resistance by the formation of Schottky barrier at Ag-ZnO heterojunctions.http://dx.doi.org/10.1155/2023/9021169 |
| spellingShingle | Min Young Kim Jeong Yun Hwang Ali Mirzaei Sun-Woo Choi Sang-il Kim Hyun-Sik Kim Sun-Jae Kim Jong Wook Roh Myung Sik Choi Kyu Hyoung Lee Seung Yong Lee Changhyun Jin NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets Adsorption Science & Technology |
| title | NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets |
| title_full | NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets |
| title_fullStr | NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets |
| title_full_unstemmed | NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets |
| title_short | NO2 Gas Sensing Properties of Ag-Functionalized Porous ZnO Sheets |
| title_sort | no2 gas sensing properties of ag functionalized porous zno sheets |
| url | http://dx.doi.org/10.1155/2023/9021169 |
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