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Controllable corrosion-assisted fabrication of Au-Ag alloyed hollow nanocrystals for highly efficient and environmentally-stable SERS substrates

文献类型：期刊论文

作者Guo, Jing1,2; Lu, Fang3; Zhang, Yugang3; Ma, Qilin2,4; Yang, Shaosong1,2; Liu, Guangqiang2; Cai, Weiping1,2
刊名NANOTECHNOLOGY
出版日期2018-11-09
卷号29期号:45页码:9
关键词corrosion-assisted nanofabrication Au-Ag alloyed hollow nanocrystals highly active and chemically-stable SERS substrates
ISSN号0957-4484
DOI10.1088/1361-6528/aade27
通讯作者Lu, Fang(flu@bnl.gov) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要Surface enhanced Raman scattering (SERS) substrates with both high activity and long term chemical-stability have been expected in the practical application of the SERS-based detection. In this paper, Au-Ag bimetal nanocrystals are fabricated based on the template-etching reaction in the Ag nanocubes-contained cetylpyridinium chloride (CPC) aqueous solution via adding the HAuCl4 solution. The obtained nanocrystals are Au-Ag alloyed and hollow in structure. Further, it has been found that with the increasing Au/Ag molar ratio, the shape of the alloyed nanocrystals evolve from the truncated nanocubes to the hollow boxes and then nanocages, showing the ever red-shifting surface plasmon resonance from the visible to the infrared region. The formation of the alloyed hollow nanocrystals is attributed to the preferential dissolution of the Ag nanocubes induced by CPC selective adsorption and the three to one galvanic replacement reaction between Ag and Au atoms. Importantly, such Au-Ag alloyed hollow nanocrystals, especially the ones with a low Au/Ag atomic ratio, show both high SERS activity and long term environmental stability compared with pure Ag or Au nanocrystals, and are the ideal candidate for the SERS substrate with practical application value. This work not only demonstrates the nanofabrication route to the alloyed hollow nanocrystals with controllable shapes and tunable optical properties in a large region, but also presents highly active and chemically-stable SERS substrates for the practical SERS-based detection.
WOS关键词ENHANCED RAMAN-SPECTROSCOPY ; SURFACE-PLASMON RESONANCE ; GALVANIC REPLACEMENT REACTION ; SHAPE-CONTROLLED SYNTHESIS ; SILVER NANOPARTICLES ; GOLD NANOPARTICLES ; FACILE SYNTHESIS ; METAL NANOSTRUCTURES ; CATALYTIC-PROPERTIES ; NANOCUBES
资助项目National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection[2017YFA0207101] ; Natural Science Foundation of China[51531006] ; Natural Science Foundation of China[11574313] ; International Partnership Program of Chinese Academy of Sciences[116134KYSB20170110]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000444752200003
出版者IOP PUBLISHING LTD
资助机构National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/39039]  
专题合肥物质科学研究院_中科院固体物理研究所
通讯作者Lu, Fang; Cai, Weiping
作者单位1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
3.Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
4.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Jing,Lu, Fang,Zhang, Yugang,et al. Controllable corrosion-assisted fabrication of Au-Ag alloyed hollow nanocrystals for highly efficient and environmentally-stable SERS substrates[J]. NANOTECHNOLOGY,2018,29(45):9.
APA Guo, Jing.,Lu, Fang.,Zhang, Yugang.,Ma, Qilin.,Yang, Shaosong.,...&Cai, Weiping.(2018).Controllable corrosion-assisted fabrication of Au-Ag alloyed hollow nanocrystals for highly efficient and environmentally-stable SERS substrates.NANOTECHNOLOGY,29(45),9.
MLA Guo, Jing,et al."Controllable corrosion-assisted fabrication of Au-Ag alloyed hollow nanocrystals for highly efficient and environmentally-stable SERS substrates".NANOTECHNOLOGY 29.45(2018):9.

入库方式： OAI收割

来源：合肥物质科学研究院

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