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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
2017-10-21
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
Volume5Issue:39Pages:10399-10405
AbstractA 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Funding OrganizationNational Key Research and Development Program of China(2017YFA0207101) ; Natural Science Foundation of China(51531006 ; CAS/SAF International Partnership Program for Creative Research Teams ; 11574313 ; 11374300 ; 51571188) ; National Key Research and Development Program of China(2017YFA0207101) ; Natural Science Foundation of China(51531006 ; CAS/SAF International Partnership Program for Creative Research Teams ; 11574313 ; 11374300 ; 51571188)
DOI10.1039/c7tc03808a
WOS KeywordENHANCED RAMAN-SPECTROSCOPY ; SHAPE-CONTROLLED SYNTHESIS ; HIGH-INDEX FACETS ; HOLLOW MICROSPHERE ARRAYS ; HOT-SPOTS ; METAL NANOPARTICLES ; GOLD NANORODS ; CORE-SHELL ; ORGANOCHLORINE PESTICIDES ; ELECTROCATALYTIC ACTIVITY
Indexed BySCI
Language英语
Funding OrganizationNational Key Research and Development Program of China(2017YFA0207101) ; Natural Science Foundation of China(51531006 ; CAS/SAF International Partnership Program for Creative Research Teams ; 11574313 ; 11374300 ; 51571188) ; National Key Research and Development Program of China(2017YFA0207101) ; Natural Science Foundation of China(51531006 ; CAS/SAF International Partnership Program for Creative Research Teams ; 11574313 ; 11374300 ; 51571188)
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000412827500035
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33805
Collection中科院固体物理研究所
Affiliation1.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
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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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