Institutional Repository of Chinese Acad Sci, Inst Solid State Phys， Hefei 230031, Anhui, Peoples R China
| Temperature regulation growth of Au nanocrystals: from concave trisoctahedron to dendritic structures and their ultrasensitive SERS-based detection of lindane | |
Zhou, Xia4,5,6; Zhao, Qian4,5; Liu, Guangqiang4; Zhang, Hongwen4 ; Li, Yue4; Cai, Weiping4,5
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| 2017-10-21 | |
| 发表期刊 | JOURNAL OF MATERIALS CHEMISTRY C
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| 摘要 | A facile temperature regulation strategy is developed for fabrication of Au concave nanocrystals with specific shapes via seed-assisted growth at 25 degrees C or lower. It has been found that the reaction temperature, even with minor changes, can significantly influence the shape of the nanocrystals, which evolves from the concave trisoctahedral to calyptriform, coral and dendritic structures with the decrease of temperature from 25 degrees C to 5 degrees C. The size and optical absorbance spectra of the nanocrystals can be determined just by the addition amount of Au seeds. The formation of the Au concave nanocrystals is attributed to the preferential growth of the nuclei in < 110 > and < 111 > directions, along which the growth rates are of different temperature dependences. Importantly, the concave trisoctahedral and calyptriform Au nanocrystal-built films have exhibited strong surface enhanced Raman scattering (SERS) activity towards the lindane molecules, with the enhancement factor higher than 107, due to their high density of sharp corners/edges or the tip effect. The Raman peak intensity versus lindane concentration is subject to a linear double logarithmic relation from 30 ppb to 300 ppm, which is attributed to the Freundlich adsorption of lindane molecules on the Au nanocrystals. This work provides not only a simple route for the fabrication of the Au nanocrystals with various specific structures but also efficient SERS substrates for trace detection of organochlorine pesticide residues. |
| 文章类型 | Article |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| DOI | 10.1039/c7tc03808a |
| 关键词[WOS] | ENHANCED RAMAN-SPECTROSCOPY ; SHAPE-CONTROLLED SYNTHESIS ; HIGH-INDEX FACETS ; HOLLOW MICROSPHERE ARRAYS ; HOT-SPOTS ; METAL NANOPARTICLES ; GOLD NANORODS ; CORE-SHELL ; ORGANOCHLORINE PESTICIDES ; ELECTROCATALYTIC ACTIVITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Key Research and Development Program of China(2017YFA0207101) ; National Key Research and Development Program of China(2017YFA0207101) ; National Key Research and Development Program of China(2017YFA0207101) ; National Key Research and Development Program of China(2017YFA0207101) ; Natural Science Foundation of China(51531006 ; Natural Science Foundation of China(51531006 ; Natural Science Foundation of China(51531006 ; Natural Science Foundation of China(51531006 ; CAS/SAF International Partnership Program for Creative Research Teams ; CAS/SAF International Partnership Program for Creative Research Teams ; CAS/SAF International Partnership Program for Creative Research Teams ; CAS/SAF International Partnership Program for Creative Research Teams ; 11574313 ; 11574313 ; 11574313 ; 11574313 ; 11374300 ; 11374300 ; 11374300 ; 11374300 ; 51571188) ; 51571188) ; 51571188) ; 51571188) |
| WOS研究方向 | Materials Science ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS记录号 | WOS:000412827500035 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/33805 |
| 专题 | 中科院固体物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Suzhou Univ, Sch Chem & Chem Engn, Suzhou 234000, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China 5.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 6.Suzhou Univ, Sch Chem & Chem Engn, Suzhou 234000, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Xia,Zhao, Qian,Liu, Guangqiang,et al. Temperature regulation growth of Au nanocrystals: from concave trisoctahedron to dendritic structures and their ultrasensitive SERS-based detection of lindane[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(39):10399-10405. |
| APA | Zhou, Xia,Zhao, Qian,Liu, Guangqiang,Zhang, Hongwen,Li, Yue,&Cai, Weiping.(2017).Temperature regulation growth of Au nanocrystals: from concave trisoctahedron to dendritic structures and their ultrasensitive SERS-based detection of lindane.JOURNAL OF MATERIALS CHEMISTRY C,5(39),10399-10405. |
| MLA | Zhou, Xia,et al."Temperature regulation growth of Au nanocrystals: from concave trisoctahedron to dendritic structures and their ultrasensitive SERS-based detection of lindane".JOURNAL OF MATERIALS CHEMISTRY C 5.39(2017):10399-10405. |
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