ZnO-nanotaper array sacrificial templated synthesis of noble-metal building-block assembled nanotube arrays as 3D SERS-substrates

This paper describes a ZnO-nanotaper array sacrificial templated synthetic approach for the fabrication of the arrays of nanotubes with tube-walls assembled by building-blocks of Ag-nanoplates, Au-nanorods, Pt-nanothorns or Pd-nanopyramids, thus possessing high-density 3D ＂hot spots＂ in sub-10-nm ga...

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Published inNano research Vol. 8; no. 3; pp. 957 - 966
Main Authors Zhu, Chuhong, Meng, Guowen, Huang, Qing, Wang, Xiujuan, Qian, Yiwu, Hu, Xiaoye, Tang, Haibin, Wu, Nianqiang
Format Journal Article
LanguageEnglish
Published Heidelberg Tsinghua University Press 01.03.2015
Springer Nature B.V
Subjects
Acids
Aqueous solutions
Arrays
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Construction
Electrolytes
Fabrication
High density
Materials Science
Nanoparticles
Nanostructure
Nanotechnology
Nitrates
Palladium
PCB
Persistent organic pollutants
Pollutants
Pollution detection
Polychlorinated biphenyls
Raman scattering
Research Article
SERS
Silver
Surface chemistry
Three dimensional
ZnO
模板合成
积木
纳米管阵列
组装
贵金属
China
template synthesis
noble metal nanotube
SERS
hierarchical nanostructure
ZnO nanotaper
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Summary:This paper describes a ZnO-nanotaper array sacrificial templated synthetic approach for the fabrication of the arrays of nanotubes with tube-walls assembled by building-blocks of Ag-nanoplates, Au-nanorods, Pt-nanothorns or Pd-nanopyramids, thus possessing high-density 3D ＂hot spots＂ in sub-10-nm gaps of neighboring building blocks with nano-tips, -corners or -edges. Additionally, these hierarchical nanostructure arrays possess high surface area with rich surface chemistry, being beneficial to capturing the analyte. The Ag-nanoplate- assembled nanotube arrays can be used as sensitive surface-enhanced Raman scattering （SERS） substrates with good signal uniformity and reproducibility. Using such Ag hierarchical nanostructure arrays as SERS-substrates, not only has 10-14 M rhodamine 6G been identified, but also 10-7 M polychlorinated biphenyls （PCBs, a notorious class of persistent organic pollutants） are recognized, and even two congeners of PCBs can be identified in a mixture, showing the potential applications of the materials in SERS-based rapid detection of environmental organic pollutants.
Bibliography:11-5974/O4
noble metal nanotube,hierarchicalnanostructure,SERS,template synthesis,ZnO nanotaper
This paper describes a ZnO-nanotaper array sacrificial templated synthetic approach for the fabrication of the arrays of nanotubes with tube-walls assembled by building-blocks of Ag-nanoplates, Au-nanorods, Pt-nanothorns or Pd-nanopyramids, thus possessing high-density 3D ＂hot spots＂ in sub-10-nm gaps of neighboring building blocks with nano-tips, -corners or -edges. Additionally, these hierarchical nanostructure arrays possess high surface area with rich surface chemistry, being beneficial to capturing the analyte. The Ag-nanoplate- assembled nanotube arrays can be used as sensitive surface-enhanced Raman scattering （SERS） substrates with good signal uniformity and reproducibility. Using such Ag hierarchical nanostructure arrays as SERS-substrates, not only has 10-14 M rhodamine 6G been identified, but also 10-7 M polychlorinated biphenyls （PCBs, a notorious class of persistent organic pollutants） are recognized, and even two congeners of PCBs can be identified in a mixture, showing the potential applications of the materials in SERS-based rapid detection of environmental organic pollutants.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-014-0577-x