Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform
Micro/nanoplastic pollution in the water environment has received great attention worldwide. The rapid identification and analysis of micro/nanoplastics are crucial steps for monitoring animal safety and protecting human health. Herein, we developed a novel surface-enhanced Raman spectroscopy (SERS)...
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| Format: | Article |
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MDPI AG
2023-09-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/11/9/490 |
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| author | Chenyu Wang Xiaoyi Shi Zhiyong Bao Maofeng Zhang Yonghui Shen Yucheng Wu |
| author_facet | Chenyu Wang Xiaoyi Shi Zhiyong Bao Maofeng Zhang Yonghui Shen Yucheng Wu |
| author_sort | Chenyu Wang |
| collection | DOAJ |
| description | Micro/nanoplastic pollution in the water environment has received great attention worldwide. The rapid identification and analysis of micro/nanoplastics are crucial steps for monitoring animal safety and protecting human health. Herein, we developed a novel surface-enhanced Raman spectroscopy (SERS) sensor based on Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub>/AgNPs array substrate for the detection and analysis of micro/nanoplastics. The semiconductor heterojunction-induced charge transfer, enhanced together with the electromagnetic enhancement of plasmon AgNPs, endow the sensor with high sensitivity, thus achieving exceptional analytical and detection capability for polystyrene (PS) nanospheres of different sizes ranging from 1 µm to 1 nm. The limits of detection (LOD) for PS nanospheres (size of 1 µm and 800 nm) was as low as 25 µg/mL, even with a portable Raman spectrometer. Additionally, the periodic Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub>/AgNPs array generated high repeatability of Raman signals with relative standard deviation (RSD) values less than 7.6%. As proof of this concept, we further demonstrated the simulation detection of PS in actual water samples. We measured the SERS spectra of the different sizes and concentrations of PS spiked in lake water and city water. The results showed that the sensing platform realized trace detection of PS nanospheres in lake water with a detection limit of 14 µg/mL, and a quantitative detection of PS with linear relationship (R<sup>2</sup> = 0.962). This SERS sensor has demonstrated fast analysis of PS nanospheres, which can provide a solid basis for the qualitative and quantitative detection of various micro/nanoplastics in the real water environments. |
| first_indexed | 2024-03-10T22:55:43Z |
| format | Article |
| id | doaj.art-da7d117220b34db7bcd4313533cde386 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-10T22:55:43Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-da7d117220b34db7bcd4313533cde3862023-11-19T10:02:04ZengMDPI AGChemosensors2227-90402023-09-0111949010.3390/chemosensors11090490Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection PlatformChenyu Wang0Xiaoyi Shi1Zhiyong Bao2Maofeng Zhang3Yonghui Shen4Yucheng Wu5School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, ChinaSchool of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, ChinaSchool of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, ChinaSchool of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, ChinaAnhui Aochuang Environment Testing Co., Ltd., Weisan Road, Fuyang Economic and Technological Development Zone, Fuyang 236000, ChinaSchool of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, ChinaMicro/nanoplastic pollution in the water environment has received great attention worldwide. The rapid identification and analysis of micro/nanoplastics are crucial steps for monitoring animal safety and protecting human health. Herein, we developed a novel surface-enhanced Raman spectroscopy (SERS) sensor based on Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub>/AgNPs array substrate for the detection and analysis of micro/nanoplastics. The semiconductor heterojunction-induced charge transfer, enhanced together with the electromagnetic enhancement of plasmon AgNPs, endow the sensor with high sensitivity, thus achieving exceptional analytical and detection capability for polystyrene (PS) nanospheres of different sizes ranging from 1 µm to 1 nm. The limits of detection (LOD) for PS nanospheres (size of 1 µm and 800 nm) was as low as 25 µg/mL, even with a portable Raman spectrometer. Additionally, the periodic Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub>/AgNPs array generated high repeatability of Raman signals with relative standard deviation (RSD) values less than 7.6%. As proof of this concept, we further demonstrated the simulation detection of PS in actual water samples. We measured the SERS spectra of the different sizes and concentrations of PS spiked in lake water and city water. The results showed that the sensing platform realized trace detection of PS nanospheres in lake water with a detection limit of 14 µg/mL, and a quantitative detection of PS with linear relationship (R<sup>2</sup> = 0.962). This SERS sensor has demonstrated fast analysis of PS nanospheres, which can provide a solid basis for the qualitative and quantitative detection of various micro/nanoplastics in the real water environments.https://www.mdpi.com/2227-9040/11/9/490surface-enhanced Raman spectroscopy (SERS)metal–organic frameworks (MOFs)Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub> heterojunctionmicro/nanoplastics detectionpolystyrene (PS) |
| spellingShingle | Chenyu Wang Xiaoyi Shi Zhiyong Bao Maofeng Zhang Yonghui Shen Yucheng Wu Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform Chemosensors surface-enhanced Raman spectroscopy (SERS) metal–organic frameworks (MOFs) Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub> heterojunction micro/nanoplastics detection polystyrene (PS) |
| title | Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform |
| title_full | Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform |
| title_fullStr | Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform |
| title_full_unstemmed | Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform |
| title_short | Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform |
| title_sort | semiconductor heterojunction agnps mediated surface enhanced raman spectroscopy sers sensor for portable miniaturized detection platform |
| topic | surface-enhanced Raman spectroscopy (SERS) metal–organic frameworks (MOFs) Co<sub>3</sub>O<sub>4</sub>/Co<sub>3</sub>S<sub>4</sub> heterojunction micro/nanoplastics detection polystyrene (PS) |
| url | https://www.mdpi.com/2227-9040/11/9/490 |
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