Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications
Abstract Highly branched metallic nanostructures, which possess a large amount of catalyst active sites and surface-enhanced Raman scattering (SERS) hot spots owing to their large surface areas, multi-level branches, corners, and edges, have shown potential in various applications including catalysi...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-03-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-019-2923-0 |
| _version_ | 1797706267749253120 |
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| author | Zi-Qiang Cheng Zhi-Wen Li Jing-Han Xu Rui Yao Zong-Lin Li Shan Liang Guang-Ling Cheng Yan-Hong Zhou Xin Luo Jiang Zhong |
| author_facet | Zi-Qiang Cheng Zhi-Wen Li Jing-Han Xu Rui Yao Zong-Lin Li Shan Liang Guang-Ling Cheng Yan-Hong Zhou Xin Luo Jiang Zhong |
| author_sort | Zi-Qiang Cheng |
| collection | DOAJ |
| description | Abstract Highly branched metallic nanostructures, which possess a large amount of catalyst active sites and surface-enhanced Raman scattering (SERS) hot spots owing to their large surface areas, multi-level branches, corners, and edges, have shown potential in various applications including catalysis and SERS. In this study, well-defined dendritic silver (Ag) nanostructures were prepared by a facile and controllable electrochemical deposition strategy. The morphology of Ag nanostructures is controlled by regulating electrodeposition time and concentration of AgNO3 in the electrolyte solution. Compared to conventional Ag nanoparticle films, dendritic Ag nanostructures exhibited larger SERS enhancement ascribed to the numerous hot spots exist in the nanogaps of parallel and vertically stacked multilayer Ag dendrites. In addition, the prepared dendritic Ag nanostructures show 3.2-fold higher catalytic activity towards the reduction of 4-nitrophenol (4-NP) by NaBH4 than the Ag nanoparticle films. The results indicate that the dendritic Ag nanostructures represent a unique bifunctional nanostructure that serves as both efficient catalysts and excellent SERS substrates, which may be further employed as a nanoreactor for in situ investigation and real-time monitoring of catalytic reactions by SERS technique. |
| first_indexed | 2024-03-12T05:48:44Z |
| format | Article |
| id | doaj.art-99fd5be2110d4d3b8ef292d05d122d93 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T05:48:44Z |
| publishDate | 2019-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-99fd5be2110d4d3b8ef292d05d122d932023-09-03T05:24:18ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2019-03-011411710.1186/s11671-019-2923-0Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS ApplicationsZi-Qiang Cheng0Zhi-Wen Li1Jing-Han Xu2Rui Yao3Zong-Lin Li4Shan Liang5Guang-Ling Cheng6Yan-Hong Zhou7Xin Luo8Jiang Zhong9Department of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Physics, Hunan Normal UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversityDepartment of Applied Physics, School of Science, East China Jiaotong UniversitySchool of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal UniversityAbstract Highly branched metallic nanostructures, which possess a large amount of catalyst active sites and surface-enhanced Raman scattering (SERS) hot spots owing to their large surface areas, multi-level branches, corners, and edges, have shown potential in various applications including catalysis and SERS. In this study, well-defined dendritic silver (Ag) nanostructures were prepared by a facile and controllable electrochemical deposition strategy. The morphology of Ag nanostructures is controlled by regulating electrodeposition time and concentration of AgNO3 in the electrolyte solution. Compared to conventional Ag nanoparticle films, dendritic Ag nanostructures exhibited larger SERS enhancement ascribed to the numerous hot spots exist in the nanogaps of parallel and vertically stacked multilayer Ag dendrites. In addition, the prepared dendritic Ag nanostructures show 3.2-fold higher catalytic activity towards the reduction of 4-nitrophenol (4-NP) by NaBH4 than the Ag nanoparticle films. The results indicate that the dendritic Ag nanostructures represent a unique bifunctional nanostructure that serves as both efficient catalysts and excellent SERS substrates, which may be further employed as a nanoreactor for in situ investigation and real-time monitoring of catalytic reactions by SERS technique.http://link.springer.com/article/10.1186/s11671-019-2923-0Dendritic silver nanostructuresCatalysisSurface-enhanced Raman scatteringElectrochemical deposition |
| spellingShingle | Zi-Qiang Cheng Zhi-Wen Li Jing-Han Xu Rui Yao Zong-Lin Li Shan Liang Guang-Ling Cheng Yan-Hong Zhou Xin Luo Jiang Zhong Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications Nanoscale Research Letters Dendritic silver nanostructures Catalysis Surface-enhanced Raman scattering Electrochemical deposition |
| title | Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications |
| title_full | Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications |
| title_fullStr | Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications |
| title_full_unstemmed | Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications |
| title_short | Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications |
| title_sort | morphology controlled fabrication of large scale dendritic silver nanostructures for catalysis and sers applications |
| topic | Dendritic silver nanostructures Catalysis Surface-enhanced Raman scattering Electrochemical deposition |
| url | http://link.springer.com/article/10.1186/s11671-019-2923-0 |
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