Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets
In this work, hydrochloric acid (HCl)-doped molybdenum ditelluride (MoTe<sub>2</sub>) nanosheets/polyaniline (PANI) nanofiber composites are prepared by in situ chemical oxidation polymerization, and then the composites are deposited on interdigital electrodes (IDEs) to fabricate a NH<...
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MDPI AG
2022-07-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/10/7/264 |
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| author | Xinpeng Chen Xiangdong Chen Xing Ding Xiang Yu |
| author_facet | Xinpeng Chen Xiangdong Chen Xing Ding Xiang Yu |
| author_sort | Xinpeng Chen |
| collection | DOAJ |
| description | In this work, hydrochloric acid (HCl)-doped molybdenum ditelluride (MoTe<sub>2</sub>) nanosheets/polyaniline (PANI) nanofiber composites are prepared by in situ chemical oxidation polymerization, and then the composites are deposited on interdigital electrodes (IDEs) to fabricate a NH<sub>3</sub> gas sensor. Morphological analysis of the composites reveals that the PANI fibers are deposited on 2D MoTe<sub>2</sub> sheets, showing a porous mesh microstructure structure with a more continuous distribution of PANI layer. FTIR spectrum analysis indicates the interaction between the MoTe<sub>2</sub> nanosheets and the PANI in the MoTe<sub>2</sub>/PANI composites. The results demonstrate that the as-prepared MoTe<sub>2</sub>/PANI composites exhibit higher response than the pure PANI, in particular, the 8 wt.% MoTe<sub>2</sub>/PANI composites display about 4.23 times enhancement in response value toward 1000 ppm NH<sub>3</sub> gas compared with the pure PANI. The enhanced NH<sub>3</sub> gas-sensitive properties may be due to the increasing surface area of MoTe<sub>2</sub>/PANI composite films and the possible interaction of the P-N heterojunctions formed between PANI and the 2H-MoTe<sub>2</sub> nanosheets. |
| first_indexed | 2024-03-09T03:34:24Z |
| format | Article |
| id | doaj.art-3a8a7b03cfaf4912930ad4dc4595abf3 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T03:34:24Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-3a8a7b03cfaf4912930ad4dc4595abf32023-12-03T14:50:27ZengMDPI AGChemosensors2227-90402022-07-0110726410.3390/chemosensors10070264Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride NanosheetsXinpeng Chen0Xiangdong Chen1Xing Ding2Xiang Yu3School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610097, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610097, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610097, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610097, ChinaIn this work, hydrochloric acid (HCl)-doped molybdenum ditelluride (MoTe<sub>2</sub>) nanosheets/polyaniline (PANI) nanofiber composites are prepared by in situ chemical oxidation polymerization, and then the composites are deposited on interdigital electrodes (IDEs) to fabricate a NH<sub>3</sub> gas sensor. Morphological analysis of the composites reveals that the PANI fibers are deposited on 2D MoTe<sub>2</sub> sheets, showing a porous mesh microstructure structure with a more continuous distribution of PANI layer. FTIR spectrum analysis indicates the interaction between the MoTe<sub>2</sub> nanosheets and the PANI in the MoTe<sub>2</sub>/PANI composites. The results demonstrate that the as-prepared MoTe<sub>2</sub>/PANI composites exhibit higher response than the pure PANI, in particular, the 8 wt.% MoTe<sub>2</sub>/PANI composites display about 4.23 times enhancement in response value toward 1000 ppm NH<sub>3</sub> gas compared with the pure PANI. The enhanced NH<sub>3</sub> gas-sensitive properties may be due to the increasing surface area of MoTe<sub>2</sub>/PANI composite films and the possible interaction of the P-N heterojunctions formed between PANI and the 2H-MoTe<sub>2</sub> nanosheets.https://www.mdpi.com/2227-9040/10/7/264MoTe<sub>2</sub> nanosheetspolyanilineNH<sub>3</sub> gas sensorP-N heterojunctionsammonia |
| spellingShingle | Xinpeng Chen Xiangdong Chen Xing Ding Xiang Yu Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets Chemosensors MoTe<sub>2</sub> nanosheets polyaniline NH<sub>3</sub> gas sensor P-N heterojunctions ammonia |
| title | Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets |
| title_full | Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets |
| title_fullStr | Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets |
| title_full_unstemmed | Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets |
| title_short | Gas Sensitive Characteristics of Polyaniline Decorated with Molybdenum Ditelluride Nanosheets |
| title_sort | gas sensitive characteristics of polyaniline decorated with molybdenum ditelluride nanosheets |
| topic | MoTe<sub>2</sub> nanosheets polyaniline NH<sub>3</sub> gas sensor P-N heterojunctions ammonia |
| url | https://www.mdpi.com/2227-9040/10/7/264 |
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