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Synthesis of porous Au-Ag alloy nanorods with tunable plasmonic properties and intrinsic hotspots for surface-enhanced Raman scattering

文献类型：期刊论文

作者Ke, Shanlin2; Kan, Caixia2,3; Zhu, Xingzhong2,3; Wang, Changshun2; Wang, Xiu2; Chen, Yuan4; Zhu, Xiaoguang5; Li, Zhaosheng1; Shi, Daning2,3
刊名CRYSTENGCOMM
出版日期2021-04-01
DOI10.1039/d1ce00258a
通讯作者Kan, Caixia(cxkan@nuaa.edu.cn) ; Shi, Daning(shi@nuaa.edu.cn)
英文摘要Plasmonic nanostructures exhibiting interior nanopores have found increasing applications in the fields of sensors and surface-enhanced Raman scattering due to controllable optical properties and built-in hotspots. Nonetheless, precise control over density of the nanopores in three-dimensional nanostructures remains a great challenge. In this study, we propose an effective synthesis strategy for porous Au-Ag alloy nanorods (P-AuAgNRs) by dealloying of Ag atoms from solid Au-Ag alloy nanorods in the presence of Fe(NO3)(3). The strategy produced P-AuAgNRs with various degrees of porosity, which demonstrated a facile plasmonic tunability across visible to near-IR regions (indicated by longitudinal surface plasmon resonance peaks). Furthermore, experimental observations and theoretical finite-difference time-domain simulations indicated that P-AuAgNRs exhibit numerous internal hotspots which favor highly sensitive surface-enhanced Raman scattering (SERS) detection for rhodamine 6G and 4-nitrothiophenol. The enhanced SERS performance was remarkably maintained under oxidative environments. Overall, we demonstrated the reliability of the proposed strategy for synthesizing P-AuAgNRs with controlled nanopores and internal hotspots. Thus, we recommend the adoption of this strategy for the preparation of other porous nanoparticles exhibiting intrinsic hotspots for SERS-based analytical sensors and imaging application.
WOS关键词GOLD NANORODS ; SEEDED GROWTH ; NANOPARTICLES ; RESONANCE ; SILVER ; SPECTROSCOPY ; NANOSPHERES ; NANOCUBES
资助项目National Natural Science Foundation of China[11774171] ; National Natural Science Foundation of China[21805137] ; National Natural Science Foundation of China[11874220] ; Fundamental Research Funds for the Central Universities[NT2020019] ; Open Fund of Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education[INMD-2020M03]
WOS研究方向Chemistry ; Crystallography
语种英语
出版者ROYAL SOC CHEMISTRY
WOS记录号WOS:000643914400001
资助机构National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Open Fund of Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/122397]  
专题中国科学院合肥物质科学研究院
通讯作者Kan, Caixia; Shi, Daning
作者单位1.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
2.Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China
3.Minist Ind & Informat Technol, Key Lab Aerosp Informat Mat & Phys, Nanjing 210016, Peoples R China
4.Key Lab Radio Frequency & Micronano Elect Jiangsu, Nanjing 210023, Peoples R China
5.Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Ke, Shanlin,Kan, Caixia,Zhu, Xingzhong,et al. Synthesis of porous Au-Ag alloy nanorods with tunable plasmonic properties and intrinsic hotspots for surface-enhanced Raman scattering[J]. CRYSTENGCOMM,2021.
APA Ke, Shanlin.,Kan, Caixia.,Zhu, Xingzhong.,Wang, Changshun.,Wang, Xiu.,...&Shi, Daning.(2021).Synthesis of porous Au-Ag alloy nanorods with tunable plasmonic properties and intrinsic hotspots for surface-enhanced Raman scattering.CRYSTENGCOMM.
MLA Ke, Shanlin,et al."Synthesis of porous Au-Ag alloy nanorods with tunable plasmonic properties and intrinsic hotspots for surface-enhanced Raman scattering".CRYSTENGCOMM (2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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