Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions
This study reports a novel Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> heterostructured nanomaterial synthesized through a simple two-step hydrothermal method combined with subsequent heat treatment. The Ni(OH)<sub>2</sub>/Co<sub>3</sub>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/11/11/568 |
| _version_ | 1797459766834888704 |
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| author | Mengran Ran Zhenyu Yuan Hongmin Zhu Hongliang Gao Fanli Meng |
| author_facet | Mengran Ran Zhenyu Yuan Hongmin Zhu Hongliang Gao Fanli Meng |
| author_sort | Mengran Ran |
| collection | DOAJ |
| description | This study reports a novel Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> heterostructured nanomaterial synthesized through a simple two-step hydrothermal method combined with subsequent heat treatment. The Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> heterostructured nanomaterial showed excellent performance in the detection of xylene gas. XRD, SEM, and EDS characterized the crystal structure, microstructure, and composition elements of Co<sub>3</sub>O<sub>4</sub> and Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub>, and the gas sensing properties of the Co<sub>3</sub>O<sub>4</sub> sensor and Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> sensor were systematically tested. The test results indicate the Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> sensor has an optimal operating temperature of 175 °C, which is 10 °C lower than that of the Co<sub>3</sub>O<sub>4</sub> sensor; has a response of 14.1 to 100 ppm xylene, which is 7-fold higher than that of the Co<sub>3</sub>O<sub>4</sub> sensor; reduces the detection limit of xylene from 2 ppm to 100 ppb; and has at least a 4-fold higher response to xylene than other gases. The Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> nanocomposite exerts the excellent catalytic performance of two-dimensional nanomaterial Ni(OH)<sub>2</sub>, solves the deficiency in the electrical conductivity of Ni(OH)<sub>2</sub> materials, and realizes the outstanding sensing performance of xylene, while the construction of the p–n heterojunction between Ni(OH)<sub>2</sub> and Co<sub>3</sub>O<sub>4</sub> also improves the sensing performance of the material. This study provides a strategy for designing high-performance xylene gas sensors using two-dimensional Ni(OH)<sub>2</sub> materials. |
| first_indexed | 2024-03-09T16:56:03Z |
| format | Article |
| id | doaj.art-bb94bcc01cc941e093e238f4401fd8e3 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T16:56:03Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-bb94bcc01cc941e093e238f4401fd8e32023-11-24T14:35:38ZengMDPI AGChemosensors2227-90402023-11-01111156810.3390/chemosensors11110568Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n JunctionsMengran Ran0Zhenyu Yuan1Hongmin Zhu2Hongliang Gao3Fanli Meng4College of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaThis study reports a novel Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> heterostructured nanomaterial synthesized through a simple two-step hydrothermal method combined with subsequent heat treatment. The Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> heterostructured nanomaterial showed excellent performance in the detection of xylene gas. XRD, SEM, and EDS characterized the crystal structure, microstructure, and composition elements of Co<sub>3</sub>O<sub>4</sub> and Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub>, and the gas sensing properties of the Co<sub>3</sub>O<sub>4</sub> sensor and Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> sensor were systematically tested. The test results indicate the Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> sensor has an optimal operating temperature of 175 °C, which is 10 °C lower than that of the Co<sub>3</sub>O<sub>4</sub> sensor; has a response of 14.1 to 100 ppm xylene, which is 7-fold higher than that of the Co<sub>3</sub>O<sub>4</sub> sensor; reduces the detection limit of xylene from 2 ppm to 100 ppb; and has at least a 4-fold higher response to xylene than other gases. The Ni(OH)<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> nanocomposite exerts the excellent catalytic performance of two-dimensional nanomaterial Ni(OH)<sub>2</sub>, solves the deficiency in the electrical conductivity of Ni(OH)<sub>2</sub> materials, and realizes the outstanding sensing performance of xylene, while the construction of the p–n heterojunction between Ni(OH)<sub>2</sub> and Co<sub>3</sub>O<sub>4</sub> also improves the sensing performance of the material. This study provides a strategy for designing high-performance xylene gas sensors using two-dimensional Ni(OH)<sub>2</sub> materials.https://www.mdpi.com/2227-9040/11/11/568xylenegas sensorNi(OH)<sub>2</sub>p–n junctions |
| spellingShingle | Mengran Ran Zhenyu Yuan Hongmin Zhu Hongliang Gao Fanli Meng Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions Chemosensors xylene gas sensor Ni(OH)<sub>2</sub> p–n junctions |
| title | Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions |
| title_full | Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions |
| title_fullStr | Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions |
| title_full_unstemmed | Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions |
| title_short | Detection of Xylene Using Ni(OH)<sub>2</sub>-Enhanced Co<sub>3</sub>O<sub>4</sub> Nanoplate via p–n Junctions |
| title_sort | detection of xylene using ni oh sub 2 sub enhanced co sub 3 sub o sub 4 sub nanoplate via p n junctions |
| topic | xylene gas sensor Ni(OH)<sub>2</sub> p–n junctions |
| url | https://www.mdpi.com/2227-9040/11/11/568 |
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