Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates
Surface-enhanced Raman scattering (SERS) spectroscopy has attracted increasing attention due to its high spectral reproducibility and unique selectivity to target molecules. Here, a facile approach is proposed to prepare Ag nanoparticles modified ZnO nanorod arrays (Ag/ZnO NR arrays). Ag nanoparticl...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/11/4/210 |
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| author | Na Li Gengsheng Xu Manqing Yan Bensong Chen Yupeng Yuan Chuhong Zhu |
| author_facet | Na Li Gengsheng Xu Manqing Yan Bensong Chen Yupeng Yuan Chuhong Zhu |
| author_sort | Na Li |
| collection | DOAJ |
| description | Surface-enhanced Raman scattering (SERS) spectroscopy has attracted increasing attention due to its high spectral reproducibility and unique selectivity to target molecules. Here, a facile approach is proposed to prepare Ag nanoparticles modified ZnO nanorod arrays (Ag/ZnO NR arrays). Ag nanoparticles were densely decorated on the surface of ZnO nanorods through silver mirror reaction and subsequent seed-assisted electrodeposition. The prepared Ag/ZnO NR arrays can be used as a sensitive, uniform, and repeatable SERS substrate for the rapid detection of organic dye molecules and biomolecules with concentrations higher than the corresponding limits of detection (LODs). The LODs for rhodamine 6G (R6G), 4-aminothiophenol (PATP) and adenine are calculated to be 1.0 × 10<sup>−13</sup> M, 1.6 × 10<sup>−12</sup> M and 3 × 10<sup>−11</sup> M, respectively. The enhancement factor (EF) of the SERS substrate is estimated to be as high as ~2.7 × 10<sup>8</sup> when detecting 10<sup>−10</sup> M R6G. Particularly, the as-synthesized substrate exhibits high selectivity to multiple components. In addition, the fabricated Ag/ZnO NR arrays can be recycled due to their superior self-cleaning ability and can realize photocatalytic degradation of R6G in water within 1 h driven by UV light, showing that the three-dimensional recyclable SERS substrates have wide applications in environmental pollution monitoring and biomedical analysis. |
| first_indexed | 2024-03-11T05:08:17Z |
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| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-11T05:08:17Z |
| publishDate | 2023-03-01 |
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| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-a06140b36836492bb5469b7c129aa2f52023-11-17T18:44:27ZengMDPI AGChemosensors2227-90402023-03-0111421010.3390/chemosensors11040210Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS SubstratesNa Li0Gengsheng Xu1Manqing Yan2Bensong Chen3Yupeng Yuan4Chuhong Zhu5School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui University, Hefei 230601, ChinaSchool of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui University, Hefei 230601, ChinaSchool of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui University, Hefei 230601, ChinaSchool of Chemistry & Material Engineering, Chaohu University, Chaohu 238000, ChinaSchool of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui University, Hefei 230601, ChinaSchool of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui University, Hefei 230601, ChinaSurface-enhanced Raman scattering (SERS) spectroscopy has attracted increasing attention due to its high spectral reproducibility and unique selectivity to target molecules. Here, a facile approach is proposed to prepare Ag nanoparticles modified ZnO nanorod arrays (Ag/ZnO NR arrays). Ag nanoparticles were densely decorated on the surface of ZnO nanorods through silver mirror reaction and subsequent seed-assisted electrodeposition. The prepared Ag/ZnO NR arrays can be used as a sensitive, uniform, and repeatable SERS substrate for the rapid detection of organic dye molecules and biomolecules with concentrations higher than the corresponding limits of detection (LODs). The LODs for rhodamine 6G (R6G), 4-aminothiophenol (PATP) and adenine are calculated to be 1.0 × 10<sup>−13</sup> M, 1.6 × 10<sup>−12</sup> M and 3 × 10<sup>−11</sup> M, respectively. The enhancement factor (EF) of the SERS substrate is estimated to be as high as ~2.7 × 10<sup>8</sup> when detecting 10<sup>−10</sup> M R6G. Particularly, the as-synthesized substrate exhibits high selectivity to multiple components. In addition, the fabricated Ag/ZnO NR arrays can be recycled due to their superior self-cleaning ability and can realize photocatalytic degradation of R6G in water within 1 h driven by UV light, showing that the three-dimensional recyclable SERS substrates have wide applications in environmental pollution monitoring and biomedical analysis.https://www.mdpi.com/2227-9040/11/4/210surface-enhanced Raman scatteringZnO nanorodAg nanoparticledetectionsilver mirror reactionelectrodeposition |
| spellingShingle | Na Li Gengsheng Xu Manqing Yan Bensong Chen Yupeng Yuan Chuhong Zhu Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates Chemosensors surface-enhanced Raman scattering ZnO nanorod Ag nanoparticle detection silver mirror reaction electrodeposition |
| title | Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates |
| title_full | Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates |
| title_fullStr | Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates |
| title_full_unstemmed | Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates |
| title_short | Fabrication of Vertically Aligned ZnO Nanorods Modified with Dense Silver Nanoparticles as Effective SERS Substrates |
| title_sort | fabrication of vertically aligned zno nanorods modified with dense silver nanoparticles as effective sers substrates |
| topic | surface-enhanced Raman scattering ZnO nanorod Ag nanoparticle detection silver mirror reaction electrodeposition |
| url | https://www.mdpi.com/2227-9040/11/4/210 |
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