Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl
The use of gold nanorods (AuNRs) as surface-enhanced Raman scattering (SERS) substrates has gained much attraction due to their remarkably aspect-ratio-dependent plasmonic properties. In this report, we described the development of AuNRs with a high aspect ratio and longitudinal surface plasmon reso...
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/10/3654 |
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| author | Hang Nguyen Thi Nhat Ngoc Thuy Trang Le Nguyen Thi Phuong Phong Dai Hai Nguyen Minh-Tri Nguyen-Le |
| author_facet | Hang Nguyen Thi Nhat Ngoc Thuy Trang Le Nguyen Thi Phuong Phong Dai Hai Nguyen Minh-Tri Nguyen-Le |
| author_sort | Hang Nguyen Thi Nhat |
| collection | DOAJ |
| description | The use of gold nanorods (AuNRs) as surface-enhanced Raman scattering (SERS) substrates has gained much attraction due to their remarkably aspect-ratio-dependent plasmonic properties. In this report, we described the development of AuNRs with a high aspect ratio and longitudinal surface plasmon resonance (LSPR) >850 nm through a hydroquinone-based fabrication with minor modifications. The synthesis started with the reduction of chloroauric acid (HAuCl<sub>4</sub>) by sodium borohydride (NaBH<sub>4</sub>) to make gold nanoseeds from which AuNRs were grown with the aid of silver nitrate (AgNO<sub>3</sub>), HAuCl<sub>4</sub>, cetyltrimethylammonium bromide (CTAB), and hydroquinone (HQ). Scanning electron microscopy coupled with energy-dispersive X-ray (SEM-EDX), Transmission electron microscope (TEM), X-ray diffraction (XRD) and Ultra-violet-Visible spectroscopy (UV-Vis) were performed to study the shape, size, and structural and optical properties of AuNRs, respectively. The results showed that AuNRs with high aspect ratios (AR > 3) were single crystals with a heterogenous size distribution, and that the growth of Au nanoseeds into AuNRs took place along the [001] direction. AuNRs exhibited two plasmon resonance peaks at 520 nm and 903 nm, while gold nanoseeds had only a plasmon resonance peak at 521 nm. The as-synthesized AuNRs also showed SERS effects for thiophanate methyl, a broad-spectrum fungicide, with the limit of detection down to 5 mg/L of the fungicide. AuNR-coated glass can serve as a SERS-based sensing platform for rapid detection of thiophanate methyl with high sensitivity and reproducibility. |
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| language | English |
| last_indexed | 2024-03-10T19:35:24Z |
| publishDate | 2020-05-01 |
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| series | Applied Sciences |
| spelling | doaj.art-245d4663290e47189629e2f67db1a30a2023-11-20T01:41:29ZengMDPI AGApplied Sciences2076-34172020-05-011010365410.3390/app10103654Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate MethylHang Nguyen Thi Nhat0Ngoc Thuy Trang Le1Nguyen Thi Phuong Phong2Dai Hai Nguyen3Minh-Tri Nguyen-Le4Faculty of Natural Sciences, Thu Dau Mot University, Thu Dau Mot City 820000, Binh Duong Province, VietnamInstitute of Research and Development, Duy Tan University, Danang 550000, VietnamFaculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City 70000, VietnamInstitute of Applied Materials Science, Vietnam Academy of Science and Technology, 01 TL29, District 12, Ho Chi Minh City 700000, VietnamLaboratory of Advanced Materials Chemistry, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 758307, VietnamThe use of gold nanorods (AuNRs) as surface-enhanced Raman scattering (SERS) substrates has gained much attraction due to their remarkably aspect-ratio-dependent plasmonic properties. In this report, we described the development of AuNRs with a high aspect ratio and longitudinal surface plasmon resonance (LSPR) >850 nm through a hydroquinone-based fabrication with minor modifications. The synthesis started with the reduction of chloroauric acid (HAuCl<sub>4</sub>) by sodium borohydride (NaBH<sub>4</sub>) to make gold nanoseeds from which AuNRs were grown with the aid of silver nitrate (AgNO<sub>3</sub>), HAuCl<sub>4</sub>, cetyltrimethylammonium bromide (CTAB), and hydroquinone (HQ). Scanning electron microscopy coupled with energy-dispersive X-ray (SEM-EDX), Transmission electron microscope (TEM), X-ray diffraction (XRD) and Ultra-violet-Visible spectroscopy (UV-Vis) were performed to study the shape, size, and structural and optical properties of AuNRs, respectively. The results showed that AuNRs with high aspect ratios (AR > 3) were single crystals with a heterogenous size distribution, and that the growth of Au nanoseeds into AuNRs took place along the [001] direction. AuNRs exhibited two plasmon resonance peaks at 520 nm and 903 nm, while gold nanoseeds had only a plasmon resonance peak at 521 nm. The as-synthesized AuNRs also showed SERS effects for thiophanate methyl, a broad-spectrum fungicide, with the limit of detection down to 5 mg/L of the fungicide. AuNR-coated glass can serve as a SERS-based sensing platform for rapid detection of thiophanate methyl with high sensitivity and reproducibility.https://www.mdpi.com/2076-3417/10/10/3654hydroquinonegoldnanorodsthiophanateRaman |
| spellingShingle | Hang Nguyen Thi Nhat Ngoc Thuy Trang Le Nguyen Thi Phuong Phong Dai Hai Nguyen Minh-Tri Nguyen-Le Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl Applied Sciences hydroquinone gold nanorods thiophanate Raman |
| title | Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl |
| title_full | Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl |
| title_fullStr | Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl |
| title_full_unstemmed | Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl |
| title_short | Hydroquinone-Based Fabrication of Gold Nanorods with a High Aspect Ratio and LSPR Greater than 850 nm to Be Used as a Surface Plasmon Resonance Platform for Rapid Detection of Thiophanate Methyl |
| title_sort | hydroquinone based fabrication of gold nanorods with a high aspect ratio and lspr greater than 850 nm to be used as a surface plasmon resonance platform for rapid detection of thiophanate methyl |
| topic | hydroquinone gold nanorods thiophanate Raman |
| url | https://www.mdpi.com/2076-3417/10/10/3654 |
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