Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature
In this study, we provide the synthesis of pristine TiO2 nanosheets (NSs) via a simple flux method and their decoration with Ag nanoparticles (NPs) using a hydrothermal method for room-temperature H2S gas sensing. Gas sensing experiments were conducted at 25 °C, evaluating the response of the Ag NPs...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Sensors and Actuators Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053925000104 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1825206895468609536 |
|---|---|
| author | Un Yup Lee Min Young Kim Kyu Hyoung Lee Sol Han Seung Yong Lee Ali Mirzaei Sun-Woo Choi Myung Sik Choi Changhyun Jin Jeong Yun Hwang |
| author_facet | Un Yup Lee Min Young Kim Kyu Hyoung Lee Sol Han Seung Yong Lee Ali Mirzaei Sun-Woo Choi Myung Sik Choi Changhyun Jin Jeong Yun Hwang |
| author_sort | Un Yup Lee |
| collection | DOAJ |
| description | In this study, we provide the synthesis of pristine TiO2 nanosheets (NSs) via a simple flux method and their decoration with Ag nanoparticles (NPs) using a hydrothermal method for room-temperature H2S gas sensing. Gas sensing experiments were conducted at 25 °C, evaluating the response of the Ag NPs-decorated TiO2 NSs to various gases. Results demonstrated the gas sensor exhibited a superior response to H2S gas compared to other gases, outperforming the pristine TiO2 NSs gas sensor. Additionally, its response to H2S gas surpassed that of the TiO2 NSs gas sensor, highlighting the promising role of Ag decoration for H2S gas detection. Sensing behavior in humid atmosphere was also investigated. The improved H2S gas sensing performance can be attributed to the catalytic effect of Ag, the formation of Ag/TiO2 heterojunctions, and the large surface area of the TiO2 NSs. This study introduces a straightforward approach to enhance the gas sensing capabilities of metal oxide NSs. |
| format | Article |
| id | doaj-art-aedbde930643486dabe9dfd1a9b5a775 |
| institution | Kabale University |
| issn | 2666-0539 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensors and Actuators Reports |
| spelling | doaj-art-aedbde930643486dabe9dfd1a9b5a7752025-02-07T04:48:19ZengElsevierSensors and Actuators Reports2666-05392025-06-019100290Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperatureUn Yup Lee0Min Young Kim1Kyu Hyoung Lee2Sol Han3Seung Yong Lee4Ali Mirzaei5Sun-Woo Choi6Myung Sik Choi7Changhyun Jin8Jeong Yun Hwang9Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, IranDepartment of Materials Science and Engineering, Kangwon National University, Samcheok 25913, Republic of KoreaDepartment of Nano & Advanced Materials Science and Engineering, Kyungpook National University, Sangju 37224, Republic of Korea; Corresponding authors.Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea; Corresponding authors.Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea; Corresponding authors.In this study, we provide the synthesis of pristine TiO2 nanosheets (NSs) via a simple flux method and their decoration with Ag nanoparticles (NPs) using a hydrothermal method for room-temperature H2S gas sensing. Gas sensing experiments were conducted at 25 °C, evaluating the response of the Ag NPs-decorated TiO2 NSs to various gases. Results demonstrated the gas sensor exhibited a superior response to H2S gas compared to other gases, outperforming the pristine TiO2 NSs gas sensor. Additionally, its response to H2S gas surpassed that of the TiO2 NSs gas sensor, highlighting the promising role of Ag decoration for H2S gas detection. Sensing behavior in humid atmosphere was also investigated. The improved H2S gas sensing performance can be attributed to the catalytic effect of Ag, the formation of Ag/TiO2 heterojunctions, and the large surface area of the TiO2 NSs. This study introduces a straightforward approach to enhance the gas sensing capabilities of metal oxide NSs.http://www.sciencedirect.com/science/article/pii/S2666053925000104H2S gas sensorTiO2 nanosheetsAg decorationAg/TiO2 heterojunctionsRoom temperature |
| spellingShingle | Un Yup Lee Min Young Kim Kyu Hyoung Lee Sol Han Seung Yong Lee Ali Mirzaei Sun-Woo Choi Myung Sik Choi Changhyun Jin Jeong Yun Hwang Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature Sensors and Actuators Reports H2S gas sensor TiO2 nanosheets Ag decoration Ag/TiO2 heterojunctions Room temperature |
| title | Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature |
| title_full | Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature |
| title_fullStr | Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature |
| title_full_unstemmed | Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature |
| title_short | Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature |
| title_sort | surface reaction mechanism and characteristics of 2 dimensional tio2 and 0 dimensional ag nanocomposites specialized for h2s gas sensing at room temperature |
| topic | H2S gas sensor TiO2 nanosheets Ag decoration Ag/TiO2 heterojunctions Room temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2666053925000104 |
| work_keys_str_mv | AT unyuplee surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT minyoungkim surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT kyuhyounglee surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT solhan surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT seungyonglee surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT alimirzaei surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT sunwoochoi surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT myungsikchoi surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT changhyunjin surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature AT jeongyunhwang surfacereactionmechanismandcharacteristicsof2dimensionaltio2and0dimensionalagnanocompositesspecializedforh2sgassensingatroomtemperature |